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Hosseinpourpia, RezaORCID iD iconorcid.org/0000-0003-0883-2306
Publications (10 of 62) Show all publications
Neitzel, N., Hosseinpourpia, R. & Adamopoulos, S. (2023). A dialdehyde starch-based adhesive for medium-density fiberboards. BioResources, 18(1), 2155-2171
Open this publication in new window or tab >>A dialdehyde starch-based adhesive for medium-density fiberboards
2023 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 18, no 1, p. 2155-2171Article in journal (Refereed) Published
Abstract [en]

Bio-based adhesives have gained considerable attention in the last years as more sustainable and healthier alternatives to the formaldehyde-based adhesives used today in wood-based panel manufacturing. In this study, dialdehyde starch (DAS) with various aldehyde contents was prepared by using sodium metaperiodate as an oxidizing agent. Characterizations were performed by employing Fourier-transform infrared spectroscopy, nuclear magnetic resonance, and thermal stability analysis. Different adhesive compositions were used for making medium-density fiberboard (MDF) panels. They were based on DAS (12 wt% based on fiber), emulsifiable diphenylmethane diisocyanate (eMDI, 2-4 wt% based on DAS), and microfibrillated cellulose (MFC, 0.5-1.0 wt% based on DAS). Fibers and the adhesive components were mixed with a combination of dry mixing and wet spraying. The physical and mechanical properties of MDF panels bonded with different DAS-based adhesives were compared with those of melamine urea-formaldehyde (MUF) adhesive and sole eMDI. The results showed that the MDF panels made with DAS-MFC-eMDI of 99.52% bio-based content showed comparable properties to standard panels with a commercial MUF adhesive. It was implied that DAS in the presence of small amount of eMDI can create strong bonds with wood fibers, while an additional positive effect on bonding was due to the contact surface enlargement of MFC.

Place, publisher, year, edition, pages
NC State University, 2023
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-119055 (URN)10.15376/biores.18.1.2155-2171 (DOI)000992668900039 ()2-s2.0-85149145425 (Scopus ID)
Funder
Swedish Research Council Formas
Available from: 2023-02-04 Created: 2023-02-04 Last updated: 2023-08-14Bibliographically approved
Neitzel, N., Eder, M., Hosseinpourpia, R., Walther, T. & Adamopoulos, S. (2023). Chemical composition, particle geometry, and micro-mechanical strength of barley husks, oat husks, and wheat bran as alternative raw materials for particleboards. Materials Today Communications, 36, Article ID 106602.
Open this publication in new window or tab >>Chemical composition, particle geometry, and micro-mechanical strength of barley husks, oat husks, and wheat bran as alternative raw materials for particleboards
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2023 (English)In: Materials Today Communications, ISSN 2352-4928, Vol. 36, article id 106602Article in journal (Refereed) Published
Abstract [en]

Particleboards are used worldwide in various industry segments, like construction and furniture production. Nevertheless, increase in wood prices and logistical challenges urge the particleboard industry to find alternative raw materials. By-products and residues from the agricultural and food industries could offer possibilities for material sourcing at a local level. This study aimed to investigate the chemical composition, particle geometry, anatomical structure, and microtensile characteristics of such material, specifically barley husks (BH), oat husks (OH), and wheat bran (WB). Barley and oat husks were found to have comparable hemicelluloses and lignin contents to industrial wood chips but contained more ash. Wheat bran was rich in extractives and showed high buffering capacity. Light microscopy and microcomputed tomography revealed details of leaf structure for BH and OH as well as the multi-layer structure of WB. The ultimate microtensile strength of BH, various OH samples, and WB were respectively 2.77 GPa, 0.84-2.42 GPa, and 1.45 GPa. The results indicated that the studied materials could have potential uses as furnish materials in non-load bearing particleboards, where thermal or acoustic insulation properties are desirable.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
agro-industry residues, chemical composition, particle geometry, SEM, x-ray microcomputed tomography, microtensile strength
National Category
Composite Science and Engineering Agricultural Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-123200 (URN)10.1016/j.mtcomm.2023.106602 (DOI)001038281900001 ()2-s2.0-85164218316 (Scopus ID)
Funder
Swedish Research Council Formas, 2018-01371
Available from: 2023-07-06 Created: 2023-07-06 Last updated: 2023-08-17Bibliographically approved
Ghavidel, A., Jorbandian, A., Bak, M., Gelbrich, J., Morrell, J. J., Sandu, I. & Hosseinpourpia, R. (2023). Degradation assessment of archaeological oak (Quercus spp.) buried under oxygen-limited condition. Holzforschung, 77(3), 198-207
Open this publication in new window or tab >>Degradation assessment of archaeological oak (Quercus spp.) buried under oxygen-limited condition
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2023 (English)In: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 77, no 3, p. 198-207Article in journal (Refereed) Published
Abstract [en]

The biological deterioration of archaeological wood under oxygen-limited conditions varies due to the limited activities of microorganisms. It is essential to expand the knowledge of the degradation types and the status of archaeological monuments for selecting the proper consolidates. The physical, chemical, and anatomical properties of approximately 600–650 year old archaeological oak collected from an archaeological site in Iasi-Romania were analysed to assess the quality and to identify the degradation types. The results were compared with similar tests on recently-cut oak. X-ray photoelectron spectroscopy (XPS) revealed the presence of more lignin-related peaks in the archaeological oak, which likely reflected the degradation of the wood carbohydrates as evidenced by the decreased oxygen-to-carbon ratio Cox/Cnon-ox. The differences in cellulose crystallinity were not significant suggesting that any cellulose degradation occurred in the amorphous regions. This was also reflected in the dynamic water vapor sorption analysis where the differences in sorption isotherms and hysteresis of archaeological and recently-cut oaks were marginal. Microscopic analysis of the oak cells illustrated bacterial degradation patterns, while the field emission scanning electron microscopy (FESEM) showed the presence of erosion bacteria in the archaeological oak collected from the site with low oxygen conditions.

Place, publisher, year, edition, pages
Walter de Gruyter, 2023
National Category
Textile, Rubber and Polymeric Materials Archaeology Polymer Chemistry Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-118166 (URN)10.1515/hf-2022-0168 (DOI)000906768300001 ()2-s2.0-85146192729 (Scopus ID)
Available from: 2023-01-06 Created: 2023-01-06 Last updated: 2023-03-27Bibliographically approved
Bari, E., Ghorbanian Far, M., Moradi, N., Morrell, J. J., Daniel, G., Mohebby, B., . . . Humar, M. (2023). Failure characteristics of thermally modified poplar wood subjected to mechanical tests. In: IRG documents database and compendium: . Paper presented at May 28-June 1. Cairns, Australia. International Research Group of Wood Protection, Article ID 23-40983.
Open this publication in new window or tab >>Failure characteristics of thermally modified poplar wood subjected to mechanical tests
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2023 (English)In: IRG documents database and compendium, International Research Group of Wood Protection , 2023, article id 23-40983Conference paper, Published paper (Refereed)
Abstract [en]

Poplar (Populus spp.) are among the fastest growing timber species and have been widely planted for use in plywood, composites, pallets, furniture components and paper production. However, the low density of the wood limits many structural applications and the wood has little resistance to biodegradation. Thermal modification represents one approach to improving durability by changing the moisture behavior of the wood, but it can also have adverse effects on structural performance. Understanding the potential effects of thermal treatment on poplar properties can help define the most appropriate applications for these materials. Poplar timbers from Iran were subjected to 30 or 60 min of thermal treatment at temperatures ranging from 110 to 220 °C. Samples were then evaluated for mass loss during treatment, changes in flexural properties, e.g., modulus of elasticity (MOE) and modulus of rupture (MOR), the degree of polymerization, and water absorption characteristics. MOR of controls subjected to 100 °C were similar to those exposed to 160 °C, while MOE was more variable with a slight upward trend for samples exposed to a given heating regime for only 30 min. The increases in MOE may be related to changes in cellulose crystallinity. Mass losses increased with increasing temperature exposure while moisture absorption decreased as expected with longer thermal exposure. The degree of polymerization remained similar for samples exposed up to 170 °C and then increased at higher temperatures. The increases may reflect the complete destruction of shorter chain polymers, leaving only the heat-resistant longer chain polymers. The results suggest that poplar can be thermally modified within limited parameters to improve some performance attributes without adversely affecting its structural capacity.

Place, publisher, year, edition, pages
International Research Group of Wood Protection, 2023
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-124913 (URN)
Conference
May 28-June 1. Cairns, Australia
Available from: 2023-09-27 Created: 2023-09-27 Last updated: 2023-10-12Bibliographically approved
Ahmed, S. A., Hosseinpourpia, R. & Adamopoulos, S. (2023). Micro-Fibrillated Cellulose in Lignin–Phenol–Formaldehyde Adhesives for Plywood Production. Forests, 14(11), Article ID 2249.
Open this publication in new window or tab >>Micro-Fibrillated Cellulose in Lignin–Phenol–Formaldehyde Adhesives for Plywood Production
2023 (English)In: Forests, ISSN 1999-4907, E-ISSN 1999-4907, Vol. 14, no 11, article id 2249Article in journal (Refereed) Published
Abstract [en]

Petrochemical-based phenol–formaldehyde (PF) adhesives are widely used in plywood production. To substitute phenol in the synthesis of PF adhesives, lignin can be added due to its structural similarity to phenol. Moreover, micro-fibrillated cellulose (MFC) can further enhance the bond performance, mechanical properties, and toughness of adhesive systems. Thus, the aim of this study was to evaluate the adhesion performance of lignin–PF (LPF) adhesives reinforced with MFC. In LPF formulations, three levels of MFC (0, 15, and 30 wt% based on the total solid content of adhesives) were added to the homogenous adhesive mixture. Three-layer plywood panels from birch (Betula pendula Roth.) veneers were assembled after hot pressing at 130 °C under two pressing durations, e.g., 60 and 75 s/mm. Tensile shear strength was measured at dry (20 °C and 65% RH) and wet conditions (water soaked at room temperature for 24 h). The results indicated that the addition of lignin reduced the strength of LPF adhesives in both dry and wet conditions compared to the control PF adhesive. However, MFC reinforcement enhanced the shear strength properties of the plywood. Furthermore, a longer pressing time of 75 s/mm slightly increased the shear strength.

Place, publisher, year, edition, pages
Switzerland: MDPI, 2023
Keywords
bio-based adhesives; tensile shear strength; viscosity; adhesive penetration; birch veneer
National Category
Composite Science and Engineering Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-125638 (URN)10.3390/f14112249 (DOI)001118094100001 ()2-s2.0-85178357748 (Scopus ID)
Available from: 2023-11-15 Created: 2023-11-15 Last updated: 2024-01-18Bibliographically approved
Jiang, W., Adamopoulos, S., Hosseinpourpia, R., Walther, T. & Medved, S. (2023). Properties and Emissions of Three-Layer Particleboards Manufactured with Mixtures of Wood Chips and Partially Liquefied Bark. Materials, 16(5), Article ID 1855.
Open this publication in new window or tab >>Properties and Emissions of Three-Layer Particleboards Manufactured with Mixtures of Wood Chips and Partially Liquefied Bark
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2023 (English)In: Materials, E-ISSN 1996-1944, Vol. 16, no 5, article id 1855Article in journal (Refereed) Published
Abstract [en]

Partial liquefaction of residual biomass shows good potential for developing new materials suitable for making bio-based composites. Three-layer particleboards were produced by replacing virgin wood particles with partially liquefied bark (PLB) in the core or surface layers. PLB was prepared by the acid-catalyzed liquefaction of industrial bark residues in polyhydric alcohol. The chemical and microscopic structure of bark and residues after liquefaction were evaluated by means of Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), while the particleboards were tested for their mechanical and water-related properties, as well as their emission profiles. Through a partial liquefaction process, some FTIR absorption peaks of the bark residues were lower than those of raw bark, indicating hydrolysis of chemical compounds. The surface morphology of bark did not change considerably after partial liquefaction. Particleboards with PLB in the core layers showed overall lower densities and mechanical properties (modulus of elasticity, modulus of rupture, and internal bond strength), and were less water-resistant as compared to the ones with PLB used in the surface layers. Formaldehyde emissions from the particleboards were 0.284–0.382 mg/m2·h, and thus, below the E1 class limit required by European Standard EN 13986:2004. The major emissions of volatile organic compounds (VOCs) were carboxylic acids as oxidization and degradation products from hemicelluloses and lignin. The application of PLB in three-layer particleboards is more challenging than in single-layer boards as PLB has different effects on the core and surface layers.

Place, publisher, year, edition, pages
MDPI, 2023
National Category
Wood Science Polymer Technologies Polymer Chemistry
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-119542 (URN)10.3390/ma16051855 (DOI)000947405900001 ()2-s2.0-85149814967 (Scopus ID)
Available from: 2023-02-24 Created: 2023-02-24 Last updated: 2024-01-12Bibliographically approved
Neitzel, N., Hosseinpourpia, R., Walther, T. & Adamopoulos, S. (2022). Alternative Materials from Agro-Industry for Wood Panel Manufacturing—A Review. Materials, 15(13), 4542-4542
Open this publication in new window or tab >>Alternative Materials from Agro-Industry for Wood Panel Manufacturing—A Review
2022 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 15, no 13, p. 4542-4542Article in journal (Refereed) Published
Abstract [en]

The growing demand for wood-based panels for buildings and furniture and the increasing worldwide concern for reducing the pressure on forest resources require alternatives to wood raw materials. The agricultural industry not only can provide raw materials from non-wood plants but also numerous residues and side streams. This review supplies an overview of the availability, chemical composition, and fiber characteristics of non-wood lignocellulosic materials and agricultural residues, i.e., grow care residues, harvest residues, and process residues, and their relevance for use in wood panel manufacturing. During the crop harvest, there are millions of tons of residues in the form of stalks, among other things. Usually, these are only available seasonally without using storage capacity. Process residues, on the other hand, can be taken from ongoing production and processed further. Fiber characteristics and chemical composition affect the panel properties. Alternatives to wood with long fibers and high cellulose content offer sufficient mechanical strength in different panel types. In general, the addition of wood substitutes up to approximately 30% provides panels with the required strength properties. However, other parameters must be considered, such as pressing temperature, adhesive type, press levels, and pretreatments of the raw material. The search for new raw materials for wood panels should focus on availability throughout the year, the corresponding chemical requirements and market competition. Panel type and production process can be adapted to different raw materials to fit niche products.

Place, publisher, year, edition, pages
MDPI, 2022
Keywords
agricultural residues; wood panels; particleboard; straw; stalks; sustainability
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-115335 (URN)10.3390/ma15134542 (DOI)000825655500001 ()35806665 (PubMedID)2-s2.0-85133459662 (Scopus ID)
Projects
Agro-industry feedstocks and side streams for increasing the sustainability of wood panel production
Funder
Swedish Research Council Formas, 2018-01371
Available from: 2022-07-13 Created: 2022-07-13 Last updated: 2023-08-14Bibliographically approved
Ahmed, S. A., Hosseinpourpia, R., Brischke, C. & Adamopoulos, S. (2022). Anatomical, Physical, Chemical, and Biological Durability Properties of Two Rattan Species of Different Diameter Classes. Forests, 13(1), Article ID 132.
Open this publication in new window or tab >>Anatomical, Physical, Chemical, and Biological Durability Properties of Two Rattan Species of Different Diameter Classes
2022 (English)In: Forests, ISSN 1999-4907, E-ISSN 1999-4907, Vol. 13, no 1, article id 132Article in journal (Refereed) Published
Abstract [en]

Rattan cane is an important forest product with economic value. Its anatomical, physical, and biological properties vary with the cane height. This makes it difficult to select the appropriate cane diameter for harvesting. Understanding the material properties of rattan cane with different diameter sizes is important to enhance its utilization and performance for different end uses. Thus, the present study was performed on two rattan species, Calamus zollingeri and Calamus ornatus, at two different cane heights (bottom/mature and top/juvenile). Calamus zollingeri was studied at diameter classes of 20 mm and 30 mm, while Calamus ornatus was analyzed at a diameter class of 15 mm. The anatomical properties, basic density, volumetric swelling, dynamic moisture sorption, and biological durability of rattan samples were studied. The results showed that C. zollingeri with a 20 mm diameter exhibited the highest basic density, hydrophobicity, dimensional stability, and durability against mold and white-rot (Trametes versicolor) fungi. As confirmed by anatomical studies, this could be due to the higher vascular bundle frequency and longer thick-walled fibers that led to a denser structure than in the other categories. In addition, the lignin content might have a positive effect on the mass loss of different rattan canes caused by white-rot decay.

Place, publisher, year, edition, pages
Switzerland: MDPI, 2022
Keywords
Calamus zollingeri; Calamus ornatus; dynamic vapor sorption; basic density; volumetric swelling; white rot; mold
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-109313 (URN)10.3390/f13010132 (DOI)000757578800001 ()2-s2.0-85140985063 (Scopus ID)2022 (Local ID)2022 (Archive number)2022 (OAI)
Available from: 2022-01-17 Created: 2022-01-17 Last updated: 2023-05-02Bibliographically approved
Gholamiyan, H., Gholampoor, B. & Hosseinpourpia, R. (2022). Application of Waterborne Acrylic and Solvent-Borne Polyester Coatings on Plasma-Treated Fir (Abies alba M.) Wood. Materials, 15(1), Article ID 370.
Open this publication in new window or tab >>Application of Waterborne Acrylic and Solvent-Borne Polyester Coatings on Plasma-Treated Fir (Abies alba M.) Wood
2022 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 15, no 1, article id 370Article in journal (Refereed) Published
Abstract [en]

This research investigates the effect of plasma treatment with air, nitrogen (N2), and carbon dioxide (CO2) gases on the performance of waterborne (acrylic) and solvent-borne (polyester) coated fir (Abies alba M.) wood samples. The properties of the plasma-coated samples were analyzed before and after exposure to accelerated weathering and compared with those of untreated and solely treated ones. According to pull-off testing, the coating adhesion of the wood samples was considerably improved by plasma treatment, and obvious differences were observed between different plasma gases. The effect was more pronounced after the weathering test. Similar results were obtained for the abrasion resistance of the samples. The water contact angle measurement illustrated more hydrophilic character in the solely plasma-treated wood in comparison with the untreated wood. The application of coatings, however, strongly improved its hydrophobic character. The performances of waterborne and solvent-borne coatings on plasma-treated wood were comparable, although slightly better values were obtained by the waterborne system. Our results exhibit the positive effect of plasma treatment on coating performances and the increased weather resistance of the waterborne and solvent-borne coating systems on plasma-treated wood.

Place, publisher, year, edition, pages
MDPI, 2022
National Category
Wood Science Polymer Chemistry
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-108794 (URN)10.3390/ma15010370 (DOI)000751250800001 ()35009515 (PubMedID)2-s2.0-85122176094 (Scopus ID)2021 (Local ID)2021 (Archive number)2021 (OAI)
Available from: 2022-01-04 Created: 2022-01-04 Last updated: 2023-02-16Bibliographically approved
Sivrikaya, H., Rehbein, M., Divos, F., Adamopoulos, S. & Hosseinpourpia, R. (2022). Changes in topochemistry and mechanical properties of Beech (Fagus orientalis L.) by natural fungus infestation. In: International Research Group on Wood Protection (IRG-WP) 29 May-2 June, Bled, Slovenia: . Paper presented at International Research Group on Wood Protection (IRG-WP) 29 May-2 June, Bled, Slovenia. IRG, Article ID IRG/WP 22-10986.
Open this publication in new window or tab >>Changes in topochemistry and mechanical properties of Beech (Fagus orientalis L.) by natural fungus infestation
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2022 (English)In: International Research Group on Wood Protection (IRG-WP) 29 May-2 June, Bled, Slovenia, IRG , 2022, article id IRG/WP 22-10986Conference paper, Published paper (Refereed)
Abstract [en]

Beech is one of the major hardwood species in Europe. It is, however, highly susceptible to fungal attack both in the fresh state and during the storage. Understanding the alteration in chemical and mechanical properties of beech wood during the initial degradation state can lead to improved raw material utilization. Therefore, UV-microspectrophotometer (UMSP) and High-Performance Liquid Chromatography (HPLC) were employed to study the chemical changes in beech (Fagus Orientalis L.) samples infested naturally by white rot fungi. The mechanical properties of infested beech were also determined and compared with the sound wood. The UMSP showed an apparent degradation in the region of the S3 and the S2 layers. HPLC analysis illustrated that catechin was the main component both in sound and infested beech wood. Considerable reductions in the mechanical strengths, bending properties and compression strength, were also apparent due to infestation.

Place, publisher, year, edition, pages
IRG, 2022
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
urn:nbn:se:lnu:diva-115707 (URN)
Conference
International Research Group on Wood Protection (IRG-WP) 29 May-2 June, Bled, Slovenia
Available from: 2022-08-10 Created: 2022-08-10 Last updated: 2023-05-02Bibliographically approved
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Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-0883-2306

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