Wood Polymer Composites in Engineering and Environmental Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 2116

Special Issue Editors


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Guest Editor
Department of Forestry, National Chung Hsing University, Taichung 402, Taiwan
Interests: bio-based composites; wood modification; functional biomaterials; natural products
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Guest Editor
Department of Wood Based Materials and Design, National Chiayi University, Chiayi 600, Taiwan
Interests: bio-based composites; wood modification; functional biomaterials; wood physics; wood weathering

Special Issue Information

Dear Colleagues,

Wood polymer composites have been considered alternatives to metals, plastics, and solid wood in automotive applications, aviation equipment components, sporting goods, and the construction industry. In recent years, they have been developed and successfully introduced into the engineering and construction marketplace, and the global market has experienced significant growth in North America, Europe, and East Asia.

The goal of this Special Issue is to cover all aspects related to the challenges and innovations in wood polymer composites, especially in engineering and environmental applications. Authors are welcome to submit their latest research on this topic, in the form of original research or review articles.

Prof. Dr. Jyh-Horng Wu
Dr. Ke-Chang Hung
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wood polymer composites
  • environment-friendly materials
  • flame retardancy
  • mechanical properties
  • structural reinforcement
  • durability
  • environmental exposure
  • creep properties

Published Papers (2 papers)

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Research

11 pages, 1957 KiB  
Article
Assessing the Long-Term Creep Behaviour of Hydrothermally Treated Japanese Cedar Wood Using the Short-Term Accelerated Stepped Isostress Method
by Jin-Wei Xu, Cheng-Chun Li, Jian-Wei Liu, Wen-Chao Chang, Wen-Shao Chang and Jyh-Horng Wu
Polymers 2023, 15(20), 4149; https://doi.org/10.3390/polym15204149 - 19 Oct 2023
Cited by 1 | Viewed by 639
Abstract
In this study, short-term accelerated creep tests were conducted using the stepped isostress method (SSM) to investigate the impact of hydrothermal treatment on the long-term creep behaviour of Japanese cedar wood and to determine optimal hydrothermal treatment conditions. The results showed that SSM [...] Read more.
In this study, short-term accelerated creep tests were conducted using the stepped isostress method (SSM) to investigate the impact of hydrothermal treatment on the long-term creep behaviour of Japanese cedar wood and to determine optimal hydrothermal treatment conditions. The results showed that SSM can effectively predict the creep behaviour of hydrothermally treated wood. Among the treatment conditions tested, Japanese cedar wood treated hydrothermally at 180 °C for 4 h exhibited higher flexural strength retention (91%) and moisture excluding efficiency (MEE) (44%) and demonstrated superior creep resistance compared to untreated wood. When subjected to a 30% average breaking load (ABL) over 20 years, the specimen’s creep compliance, instantaneous creep compliance, b value, activation volume, and improvement in creep resistance (ICR) were 0.17 GPa−1, 0.139 GPa−1, 0.15, 1.619 nm3, and 4%, respectively. The results indicate that subjecting Japanese cedar wood to hydrothermal treatment at 180 °C for 4 h has a negligible effect on its flexural properties but results in significant improvements in both dimensional stability and creep resistance. Full article
(This article belongs to the Special Issue Wood Polymer Composites in Engineering and Environmental Applications)
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11 pages, 7664 KiB  
Article
Effect of Grafting Conditions on the Interfacial Properties of Silane Modified Wood Veneer/PE Film Plywood
by Liang Chang, Yuanwu Wang, Xueqi Chen, Yiping Ren and Xiaoxi Luo
Polymers 2023, 15(13), 2957; https://doi.org/10.3390/polym15132957 - 5 Jul 2023
Viewed by 1072
Abstract
In order to elucidate the importance of grafting in the compatibilization process of silane coupling agents, poplar veneer was treated with silane coupling agents and grafted under different heating conditions. The treated veneers were used composited with PE film to prepare different plywood [...] Read more.
In order to elucidate the importance of grafting in the compatibilization process of silane coupling agents, poplar veneer was treated with silane coupling agents and grafted under different heating conditions. The treated veneers were used composited with PE film to prepare different plywood samples. XPS and WCA were used to analyze the effect of grafting conditions on the surface properties of the silane-treated veneer. The results showed that free silanols can physically be adsorbed onto all silane-treated veneer surfaces, forming hydrogen–Si–O–Si– bonds and therefore increasing the water contact angle. Only under heating conditions could the –Si–O–Si– be converted into covalent –Si–O–C– bonds, which helped to improve the bonding strength. When silane-treated veneer was grafted at 120 °C for 90 min, the tensile shear strength of plywood reached 1.03 MPa, meeting the requirements of GB/T 9846.3-2004 for outdoor materials. Enhanced interlock between silane-modified veneer and PE film was observed under the optimal grafting condition by SEM. The better interface structure allowed improvement of thermal stability. DMA results showed that the retention rate in storage modulus at 130 °C was 60% for the grafted sample, while the retention rate for the ungrafted sample was only 31%. Full article
(This article belongs to the Special Issue Wood Polymer Composites in Engineering and Environmental Applications)
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