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Polymers
Special Issues
Modified Lignocellulose-Based Materials
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Modified Lignocellulose-Based Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 4482

Special Issue Editor

Dr. Teng-Chun Yang

E-Mail Website
Guest Editor
Department of Forestry, National Chung Hsing University, Taichung 402, Taiwan
Interests: wood; bamboo; lignocellulosic materials; natural fibers-reinforced composites; thermal modification; the structural design; fused deposition modeling (FDM)
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Lignocellulosic materials including wood, bamboo, agricultural, or forestry wastes are a mixture of natural polymers based on cellulose, and hemicellulose, and lignin. Recently, to increase the utilization of lignocellulosic materials, lignocellulose-based products have been developed, such as laminated lumber, particleboard, and fiber-reinforced matrix composite. However, a lignocellulosic material has undesirable properties, such as high hygroscopicity, biological degradation, and low weathering resistance. Therefore, physical and chemical modification methods have been used to improve these drawbacks and enhance characteristics of a material, such as heat treatment, silane treatment, alkaline treatment, and esterification etc.

This Special Issue is concerned with modification methods to improve weathering durability, biological resistance, fire retardancy, and hydrophobicity of lignocellulose-based products. Additionally, the aim of this Special Issue is to collect the latest original research or reviews to increase the knowledge of modified lignocellulose-based materials. Furthermore, the investigation of various lignocellulosic materials as the filament for 3D printing using fused deposition modeling (FDM) are also welcomed.

Prof. Teng-Chun Yang

Guest Editor

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

  • Physical modification
  • Chemical modification
  • Lignocellulose-based materials
  • 3D printing
  • Degradation resistance
  • Durability improvement
  • Characteristics of modified materials

Published Papers (2 papers)

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Research

12 pages, 3334 KiB  
Article
Characteristic Properties of a Bamboo-Based Board Combined with Bamboo Veneers and Vacuum Heat-Treated Round Bamboo Sticks
by Yu-Hsuan Yang, Min-Jay Chung, Tung-Lin Wu, Chin-Hao Yeh and Teng-Chun Yang
Polymers 2022, 14(3), 560; https://0-doi-org.brum.beds.ac.uk/10.3390/polym14030560 - 29 Jan 2022
Cited by 3 | Viewed by 3165
Abstract
In this study, a bamboo stick board with rotary-cut bamboo veneers was successfully fabricated. Additionally, vacuum heat (VH) treatment, which is a popular thermal modification method, was used to modify bamboo sticks. Therefore, the effects of different VH treatment temperatures on the dimensional [...] Read more.
In this study, a bamboo stick board with rotary-cut bamboo veneers was successfully fabricated. Additionally, vacuum heat (VH) treatment, which is a popular thermal modification method, was used to modify bamboo sticks. Therefore, the effects of different VH treatment temperatures on the dimensional stability and flexural properties of bamboo stick boards with and without bamboo veneers were investigated. For all boards, as the temperature increased to 220 °C, the thickness change rate and equilibrium moisture content decreased, and the flexural properties increased. The results exhibited that VH treatment improved the dimensional stability and flexural properties of the boards. Furthermore, the board with veneers had lower flexural properties and higher thickness swelling after water absorption than the board without veneers (BSB). The results indicated that bamboo veneer caused low flexural properties and high thickness swelling of the board compared to the BSB. However, the bamboo veneer played an aesthetic role in the appearance of the bamboo stick board. Full article
(This article belongs to the Special Issue Modified Lignocellulose-Based Materials)
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11 pages, 3215 KiB  
Article
Water Resistance and Creep Behavior of Heat-Treated Moso Bamboo Determined by the Stepped Isostress Method
by Teng-Chun Yang, Tung-Lin Wu and Chin-Hao Yeh
Polymers 2021, 13(8), 1264; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13081264 - 13 Apr 2021
Cited by 2 | Viewed by 1852
Abstract
The influence of heat treatment on the physico-mechanical properties, water resistance, and creep behavior of moso bamboo (Phyllostachys pubescens) was determined in this study. The results revealed that the density, moisture content, and flexural properties showed negative relationships with the heat [...] Read more.
The influence of heat treatment on the physico-mechanical properties, water resistance, and creep behavior of moso bamboo (Phyllostachys pubescens) was determined in this study. The results revealed that the density, moisture content, and flexural properties showed negative relationships with the heat treatment temperature, while an improvement in the dimensional stability (anti-swelling efficiency and anti-water absorption efficiency) of heat-treated samples was observed during water absorption tests. Additionally, the creep master curves of the untreated and heat-treated samples were successfully constructed using the stepped isostress method (SSM) at a series of elevated stresses. Furthermore, the SSM-predicted creep compliance curves fit well with the 90-day full-scale experimental data. When the heat treatment temperature increased to 180 °C, the degradation ratio of the creep resistance (rd) significantly increased over all periods. However, the rd of the tested bamboo decreased as the heat treatment temperature increased up to 220 °C. Full article
(This article belongs to the Special Issue Modified Lignocellulose-Based Materials)
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