Effects of fungal biodegradation on structure–property relationships of medium density fibre board and hybrid polypropylene composite made from sugar-cane residue

IF 1.3 Q2 MATERIALS SCIENCE, PAPER & WOOD International Wood Products Journal Pub Date : 2021-07-03 DOI:10.1080/20426445.2021.1910169
E. Nadali, M. Tajvidi, R. Naghdi
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引用次数: 4

Abstract

ABSTRACT This paper reports an in-depth comparative study on the effects of Trametes versicolor on sugar-cane residue polypropylene composite and medium density fibre board. The samples were subjected to the fungus at 25°C and 75% relative humidity either for 2 or 4 months. Mass, bending strength, elastic modulus, hardness, and equilibrium moisture content (EMC) of both products reduced, while water absorption and thickness swelling increased due to biodegradation. The rates of mass, bending strength, elastic modulus, hardness, and EMC reductions, and water absorption and thickness swelling increases in MDFs were far higher than those of the composites, indicating the lesser susceptibility of the latter samples. Elastic modulus of the composites and hardness of MDFs were more adversely affected under fungal attack, whereas hardness underwent higher rates of reduction in the composites, as compared to the other properties. Scanning electron microscopy was conducted to characterise the alterations in mechanical properties.
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真菌生物降解对甘蔗渣制备中密度纤维板和混杂聚丙烯复合材料结构性能关系的影响
摘要:本文深入对比研究了彩板菌对甘蔗渣聚丙烯复合材料和中密度纤维板的影响。样品在25°C和75%相对湿度条件下放置2个月或4个月。由于生物降解,两种产品的质量、抗弯强度、弹性模量、硬度和平衡含水率(EMC)降低,吸水率和厚度膨胀增加。MDFs的质量、抗弯强度、弹性模量、硬度、电磁兼容降低率以及吸水率和厚度膨胀率的增加率都远远高于复合材料,表明后者的敏感性较小。复合材料的弹性模量和MDFs的硬度在真菌攻击下受到更大的不利影响,而硬度在复合材料中经历了更高的降低率,与其他性能相比。用扫描电子显微镜观察了机械性能的变化。
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来源期刊
International Wood Products Journal
International Wood Products Journal MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
2.40
自引率
0.00%
发文量
27
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