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Polymers
Special Issues
Lignocellulosic Composites: Processing and Applications
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Lignocellulosic Composites: Processing and Applications

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 (15 July 2022) | Viewed by 3511

Special Issue Editor

Prof. Dr. Sheldon Shi

E-Mail Website
Guest Editor
Mechanical Engineering Department, University of North Texas, Denton, TX 76203, USA
Interests: bioproducts; natural fiber composites; functional composites; biomass to carbon conversion; bio-based carbon for electrode
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is designed to update the state-of-the-art technologies of lignocellulosic composite products. This is mainly related to the composites made from lignoicellulosic materials, such as wood, natural fibers, and any other biomass. This Special Issue will consist of (but is not limit to) the following aspects:

  1. Fabrication of the lignocellulosic materials—the technologies for wood and other bio-based composites’ processing for both structural and non-structural products;
  2. Pre- and post-treatment of the composites for specialty applications—this includes surface the treatment of wood elements and lignocellulosic fibers to enhance the interfacial bonding of fibers and the resin matrices, and to functionalize the resulting composites (i.e., decay resistance, fire resistance, durability, or other functions);
  3. Wood adhesives and resins—this includes the traditional wood adhesives, such as UF, PF, PUF, Isocyanate, and other resin matrices. The focus will be on the technological development of biodegradable adhesives and resins, such as soy-based resin, glycosyl resin, and other plant-based adhesives;
  4. Applications of the composites in buildings, furniture, industrial, transportation, automobile and aerospace, military, and other areas.

Prof. Sheldon Shi
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

  • Wood
  • Lignocellulose
  • Composites
  • Treatment
  • Resin and adhesive
  • Functional composites

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Published Papers (1 paper)

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Research

26 pages, 16241 KiB  
Article
Antifungal Activities of Wood and Non-Wood Kraft Handsheets Treated with Melia azedarach Extract Using SEM and HPLC Analyses
by Mohamed Z. M. Salem, Saqer S. Alotaibi, Wael A. A. Abo Elgat, Ayman S. Taha, Yahia G. D. Fares, Ahmed M. El-Shehawi and Rehab Y. Ghareeb
Polymers 2021, 13(12), 2012; https://doi.org/10.3390/polym13122012 - 20 Jun 2021
Cited by 5 | Viewed by 2862
Abstract
The main objective of this work was to evaluate pulp produced by kraft cooking for wood materials (WMT) (Bougainvillea spectabilis, Ficus altissima, and F. elastica) and non-wood materials (NWMT) (Sorghum bicolor and Zea mays stalks) and to study [...] Read more.
The main objective of this work was to evaluate pulp produced by kraft cooking for wood materials (WMT) (Bougainvillea spectabilis, Ficus altissima, and F. elastica) and non-wood materials (NWMT) (Sorghum bicolor and Zea mays stalks) and to study the fungal activity of handsheets treated with Melia azedarach heartwood extract (MAHE) solutions. Through the aforementioned analyses, the ideal cooking conditions were determined for each raw material based on the lignin percentage present. After cooking, pulp showed a decrease in the Kappa number produced from WMT, ranging from 16 to 17. This was in contrast with NWMT, which had Kappa numbers ranging from 31 to 35. A difference in the optical properties of the pulp produced from WMT was also observed (18 to 29%) compared with pulp produced from NWMT (32.66 to 35.35%). As for the evaluation of the mechanical properties, the tensile index of the pulp ranged from 30.5 to 40 N·m/g for WMT and from 44.33 to 47.43 N·m/g for NWMT; the tear index ranged from 1.66 to 2.55 mN·m2/g for WMT and from 4.75 to 5.87 mN·m2/g for NWMT; and the burst index ranged from 2.35 to 2.85 kPa·m2/g for WMT and from 3.92 to 4.76 kPa·m2/g for NWMT. Finally, the double fold number was 3 compared with that of pulp produced from pulp, which showed good values ranging from 36 to 55. In the SEM examination, sheets produced from treated handsheets with extract from MAHE showed no growth of Aspergillus fumigatus over paper discs manufactured from B. speclabilis pulp wood. Pulp paper produced from Z. mays and S. bicolor stalks was treated with 1% MAHE, while pulp paper from F. elastica was treated with 0.50% and 1% MAHE. With the addition of 0.5 or 1% MAHE, Fusarium culmorum showed no increase in growth over the paper manufactured from B. speclabilis, F. altissima, F. elastica and Zea mays pulps with visual inhibition zones found. There was almost no growth of S. solani in paper discs manufactured from pulps treated with 1% MAHE. This is probably due to the phytochemical compounds present in the extract. The HPLC analysis of MAHE identified p-hydroxybenzoic acid, caffeine, rutin, chlorogenic acid, benzoic acid, quinol, and quercetin as the main compounds, and these were present in concentrations of 3966.88, 1032.67, 834.13, 767.81, 660.64, 594.86, and 460.36 mg/Kg extract, respectively. Additionally, due to the importance of making paper from agricultural waste (stalks of S. bicolor and Z. mays), the development of sorghum and corn with high biomass is suggested. Full article
(This article belongs to the Special Issue Lignocellulosic Composites: Processing and Applications)
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