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Polymers
Special Issues
Wood-Based Nanofunctional Polymeric Materials
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Wood-Based Nanofunctional Polymeric Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: closed (5 June 2023) | Viewed by 3578

Special Issue Editors

Dr. Shaoyi Lyu

E-Mail Website
Guest Editor
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
Interests: wood functional materials; nanofunctional materials; nanocellulose; aerogel; natural polymer
Dr. Longfei Zhang

E-Mail Website
Guest Editor
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
Interests: wood-functional materials; nanocellulose; luminescence and fluorescence; superhydrophobic; flame retardance; photocatalysis

Special Issue Information

Dear Colleagues,

Wood-based materials are natural and environmentally friendly, offering benefits such as large natural reserves, natural degradation, carbon fixation, renewable, and green pollution-free. As a kind of natural renewable resource, the functional composite of wood-based materials is a novel way of improving their performance. Wood-based nanofunctional composites are a successful example of wood-based functional materials expanding to the frontier field of nanotechnology, their unique properties and functions making them a hot spot in wood science research.

Wood-based nanofunctional polymeric materials generally include two meanings. One is wood-based nanocellulose functional materials, that is, taking nanocellulose as the matrix; then, compounds with photoelectric or magnetic biomarkers are grafted onto the hydroxyl of nanocellulose by chemical bonding to prepare nanocellulose functional materials modified by functional groups, or through physical mixing, after which the nanocellulose functional materials are obtained by compounding with organic and inorganic nanofunctional materials in the form of a hydrogen bond. The second is nanofunctional composite wood; the composite material is obtained by combining organic and inorganic nanofunctional materials with wood through physical or chemical combination, in order to improve the performance and add value to traditional wood. Wood can be natural without the application of any treatment, chemically treated (e.g., delignification), or nanofunctional units (e.g., fibers, shavings, veneer, etc.).

This Special Issue titled “Wood-Based Nanofunctional Polymeric Materials” focuses on innovative wood-based nanofunctional materials with special properties, such as acoustics, conductivity, energy storage, electromagnetic shielding, flame retardance, luminescence, fluorescence, thermochromism, photochromism, superhydrophobic, adsorption, oil-water separation, catalysis, etc. We are pleased to invite you to contribute your latest research to this Special Issue in the form of complete research articles, letters, communications, or reviews.

Dr. Shaoyi Lyu
Dr. Longfei Zhang
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-based nanofunctional composites
  • nanocellulose functional materials
  • wood nanomodification
  • nanotechnology and nanomaterials for wood
  • conductivity
  • energy storage
  • electromagnetic shielding
  • flame retardance
  • superhydrophobic
  • luminescence
  • fluorescence
  • photocatalysis
  • pollutant treatment
  • recycling

Published Papers (2 papers)

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Research

17 pages, 8012 KiB  
Article
Self-Luminous Wood Coatings with Carbon Dots/TiO2 Grafted Afterglow SrAl2O4: Eu, Dy Core-Shell Phosphors for Long-Lasting Formaldehyde Removal
by Longfei Zhang, Ying Wang, Limin Peng, Zhilin Chen, Shaoyi Lyu and Siqun Wang
Polymers 2023, 15(9), 2077; https://doi.org/10.3390/polym15092077 - 27 Apr 2023
Viewed by 1248
Abstract
Long-term relief of indoor volatile pollution has become a competitive issue worldwide in both visible and dark environments. A novel self-luminous wood coating with carbon dots (CDs)/titanium dioxide (TiO2) nanomaterial coated SrAl2O4: Eu2+, Dy3+ [...] Read more.
Long-term relief of indoor volatile pollution has become a competitive issue worldwide in both visible and dark environments. A novel self-luminous wood coating with carbon dots (CDs)/titanium dioxide (TiO2) nanomaterial coated SrAl2O4: Eu2+, Dy3+ (CDs/TiO2@SAO) composite was prepared for the long-term degradation of formaldehyde through a simple sol-gel method. The microstructure, chemical composition, ultraviolet-visible (UV-vis) spectra, and long-lasting fluorescence of the CDs/TiO2@SAO photocatalyst were analyzed to illustrate the mechanism for degrading formaldehyde. The obtained CDs with a particle size of ~2–7 nm have a good graphite structure and presented good absorption in visible light. In addition, owing to the synergistic effect of the CDs/TiO2 nanomaterial coating layer and the long-afterglow luminescence of the SAO phosphor, the CDs/TiO2@SAO composite can absorb a part of the visible light for photocatalytic degradation and store luminous energy efficiently at daytime so as to give out visible luminescence continuously for a few hours in the darkness. Furthermore, the functional wood coatings with CDs/TiO2@SAO composite presented continuous and efficient photocatalytic activity in the presence and absence of light exposure. The current research could provide a new strategy for designing an efficient photocatalyst for degrading formaldehyde pollution in the daytime with a visible light supply and in an indoor dark environment without an external light source. Full article
(This article belongs to the Special Issue Wood-Based Nanofunctional Polymeric Materials)
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16 pages, 3179 KiB  
Article
Effects of Heat Treatment on Color, Dimensional Stability, Hygroscopicity and Chemical Structure of Afrormosia and Newtonia Wood: A Comparative Study of Air and Palm Oil Medium
by Lionnel Frederique Bidzanga Bessala, Jingjing Gao, Zhengbin He, Zhenyu Wang and Songlin Yi
Polymers 2023, 15(3), 774; https://doi.org/10.3390/polym15030774 - 02 Feb 2023
Cited by 4 | Viewed by 1714
Abstract
In recent years, China is increasingly dependent on imported wood. Afrormosia and Newtonia are some of the imported species with good utilization potential. However, both of them also have problems with poor dimensional stability. In order to make better use of these two [...] Read more.
In recent years, China is increasingly dependent on imported wood. Afrormosia and Newtonia are some of the imported species with good utilization potential. However, both of them also have problems with poor dimensional stability. In order to make better use of these two types of wood, the influence of heat treatment under air and palm oil conditions on the color, dimensional stability, and hygroscopicity of Afrormosia and Newtonia was investigated. The Afrormosia and Newtonia wood samples were heated in air or palm oil medium for two hours at 160 °C, 180 °C and 200 °C, respectively. Then, the color, weight changes, swelling, moisture absorption and chemical structure were evaluated for each case. As results, the heat treatments with air or palm oil increased the dark color of Newtonia and Afrormosia wood and this increase was proportional to the treatment temperature. The tangential and radial swelling coefficient for air heat treatment of Afrormosia wood at 200 °C were, respectively, reduced by 24.59% and 19.58%, while this reduction for Newtonia was 21.32% and 14.80%. The heat treatment in palm oil further improved the stability and hygroscopicity of the wood, showing that the Afrormosia samples treated by palm oil at 200 °C underwent a decrease of its tangential and radial swelling coefficient, respectively, by 49.34% and 45.88%, whereas the tangential and radial swelling coefficient of Newtonia treated under the same conditions were reduced by 42.85% and 33.63%, respectively. The heat treatments of Afrormosia and Newtonia samples under air at 200 °C diminished the water absorption by 21.67% and 22.12%. The water absorption of Afrormosia and Newtonia heat-treated under palm oil at 200 °C was reduced, respectively, by 39.40% and 37.49%. Moreover, the FTIR analysis showed the decrease of hydroxyl groups in proportion to the wood treatment temperature. Full article
(This article belongs to the Special Issue Wood-Based Nanofunctional Polymeric Materials)
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