Comparative Evaluation of Mechanical and Physical Properties of Mycelium Composite Boards Made from Lentinus sajor-caju with Various Ratios of Corn Husk and Sawdust

IF 4.2 2区 生物学 Q2 MICROBIOLOGY Journal of Fungi Pub Date : 2024-09-05 DOI:10.3390/jof10090634
Praween Jinanukul, Jaturong Kumla, Worawoot Aiduang, Wandee Thamjaree, Rawiwan Oranratmanee, Umpiga Shummadtayar, Yuttana Tongtuam, Saisamorn Lumyong, Nakarin Suwannarach, Tanut Waroonkun
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Abstract

Mycelium-based composites (MBCs) exhibit varied properties as alternative biodegradable materials that can be used in various industries such as construction, furniture, household goods, and packaging. However, these properties are primarily influenced by the type of substrate used. This study aims to investigate the properties of MBCs produced from Lentinus sajor-caju strain CMU-NK0427 using different ratios of sawdust to corn husk in the development of mycelium composite boards (MCBs) with thicknesses of 8, 16, and 24 mm. The results indicate that variations in the ratios of corn husk to sawdust and thickness affected the mechanical and physical properties of the obtained MCBs. Reducing the corn husk content in the substrate increased the modulus of elasticity, density, and thermal conductivity, while increasing the corn husk content increased the bending strength, shrinkage, water absorption, and volumetric swelling. Additionally, an increase in thickness with the same substrate ratio only indicated an increase in density and shrinkage. MCBs have sound absorption properties ranging from 61 to 94% at a frequency of 1000 Hz. According to the correlation results, a reduction in corn husk content in the substrate has a significant positive effect on the reduction in bending strength, shrinkage, and water absorption in MCBs. However, a decrease in corn husk content shows a strong negative correlation with the increase in the modulus of elasticity, density, and thermal conductivity. The thickness of MCBs with the same substrate ratio only shows a significant negative correlation with the modulus of elasticity and bending strength. Compared to commercial boards, the mechanical (bending strength) and physical (density, thermal conductivity, and sound absorption) properties of MCBs made from a 100% corn husk ratio are most similar to those of softboards and acoustic boards. The results of this study can provide valuable information for the production of MCBs and will serve as a guide to enhance strategies for further improving their properties for commercial manufacturing, as well as fulfilling the long-term goal of eco-friendly recycling of lignocellulosic substrates.
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用不同比例的玉米芯和锯屑制成的菌丝复合板的机械和物理性能比较评估
作为可生物降解的替代材料,菌丝基复合材料(MBCs)具有多种特性,可用于建筑、家具、家居用品和包装等多个行业。然而,这些特性主要受所用基材类型的影响。本研究旨在研究在开发厚度为 8、16 和 24 毫米的菌丝复合板(MCB)时,使用不同比例的锯屑和玉米皮从 Lentinus sajor-caju 菌株 CMU-NK0427 中生产出的 MBC 的特性。结果表明,玉米皮与锯屑的比例和厚度的变化会影响所获得 MCB 的机械和物理特性。减少基材中的玉米皮含量会增加弹性模量、密度和导热性,而增加玉米皮含量则会增加弯曲强度、收缩率、吸水率和体积膨胀率。此外,在基材比例相同的情况下,增加厚度只会增加密度和收缩率。MCB 在频率为 1000 Hz 时具有 61% 至 94% 的吸音特性。根据相关结果,基材中玉米皮含量的减少对降低 MCB 的抗弯强度、收缩率和吸水性有显著的积极影响。然而,玉米皮含量的减少与弹性模量、密度和导热系数的增加呈强烈的负相关。基材比例相同的 MCB 厚度仅与弹性模量和抗弯强度呈显著负相关。与商用板相比,100% 玉米皮配比制成的 MCB 的机械(弯曲强度)和物理(密度、导热性和吸音)特性与软板和吸音板最为相似。本研究的结果可为 MCB 的生产提供有价值的信息,并可作为改进策略的指南,以进一步提高其商业制造性能,同时实现木质纤维素基材生态友好型回收利用的长期目标。
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来源期刊
Journal of Fungi
Journal of Fungi Medicine-Microbiology (medical)
CiteScore
6.70
自引率
14.90%
发文量
1151
审稿时长
11 weeks
期刊介绍: Journal of Fungi (ISSN 2309-608X) is an international, peer-reviewed scientific open access journal that provides an advanced forum for studies related to pathogenic fungi, fungal biology, and all other aspects of fungal research. The journal publishes reviews, regular research papers, and communications in quarterly issues. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on paper length. Full experimental details must be provided so that the results can be reproduced.
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