VALORIZATION OF CORN HUSK (ZEA MAYS) AND CORN SILK IN POLYMER PARTICLEBOARD MANUFACTURE AND EFFECT OF WASTE COLEMANITE ON THE MECHANICAL PERFORMANCE OF PARTICLEBOARDS

Cellulose Chemistry and Technology, Journal Year: 2024, Volume and Issue: 58(7-8), P. 819 - 832

Published: Sept. 25, 2024

In this experimental study, the usability of waste corn husk was investigated as a source reinforcement material for first time in eco-friendly particleboard manufacture. For purpose, effect most appropriate filler/binder (f/b) ratio and pressing temperature manufacturing conditions on three-point flexural strength manufacture examined. To improve mechanical properties, water resistance combustion manufactured particleboards, different amounts silk fiber (0~1.50% by weight) colemanite (0~20% were added. According to results, husk-based determined f/b 0.75, 100 °C, loading 0.75 wt%. Additionally, synthetic binders beet molasses used together The particleboards comply with specifications EN 312 standard, being below maximum limit values terms thickness swelling, absorption rates. addition, increasing content board composition, limiting oxygen index (LOI) boards increased. However, use reduced boards. When 5% added met minimum value requirement P1 type board, according 312. dimensional stability conditions, is quite good. Particleboards from husks can be interior exterior applications building materials.

Language: Английский

Preparation of High Water Resistance Full Biomass Adhesive by Ultrastrong Crosslinking with Gelatin, Citric Acid and Sucrose

Published: Jan. 1, 2024

The construction of laminated composites using biomass materials for furniture manufacturing has important research value and practical significance. Gelatin, a renewable non-toxic resource, holds significant potential diverse applications. However, its low mechanical strength poor water resistance have hindered use as wood adhesive. In this work, gelatin (GE) is used the main raw material, citric acid (CA) sucrose (Su) are to construct highly efficient crosslinking water-resistant structure, GE/Su-CA adhesive prepared. influence distribution ratio, hot-press temperature, time, other factors on composite system studied. FTIR, 13C NMR, XPS, GPC were prove that can be cross-linked with gelatin/sucrose form tight network structure by covalent or non-covalent binding. Because high density, it had better waterproof properties. results property test show dry shear reach 1.91 MPa, hot immersion boiling 1.41 MPa 1.37 respectively. project will provide new way prepare high-performance environment-friendly gelatin-based composites.

Language: Английский

Sawdust Fiber Based Multi-Functional Adhesive with Multiple Crosslinked Networks

ACS Sustainable Resource Management, Journal Year: 2024, Volume and Issue: unknown

Published: July 7, 2024

Designing bio-based adhesives with multiple crosslinking networks has significant implications for the green and sustainable development of forestry industry. A sawdust based network adhesive system was constructed by a small molecule covalent bridge hydrogen bond grafting chain thioctic acid (TA) supramolecule oxidized (OS) as carrier first second network, which realized toughening strengthening sawdust/thioctic (OSTA) adhesive. Furthermore, wood interface regulated 3-glycidyl ether oxy propyl trimethoxysilane, introduced active epoxy groups to interface. Then, third interfacial reaction carboxyl group, hydroxyl amino group in OSTA system. The dry bonding strength OSTA-modified can reach 2.09 MPa, is 75.6% 50.4% higher than that OS TA adhesives, respectively, water resistance increased from 0 MPa 1.25 1.71 MPa. In addition, not only shows adhesion performance but also manifests excellently on various surface energy substrates, such skin, glass, ceramics, plants, rubber, stainless steel, etc., multi-functional properties. This work broadens prospects applications scenarios.

Language: Английский