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Physicochemical changes in rice straw after composting and its effect on rice-straw-based composites

文献类型： 外文期刊

作者： Qu, Ping 1 ; Huang, Hongying 2 ; Zhao, Yongfu 1 ; Wu, Guofeng 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China

关键词： biodegradable composites;composting method;modified urea formaldehyde;processability;rice straw

期刊名称：JOURNAL OF APPLIED POLYMER SCIENCE （ 影响因子：3.125； 五年影响因子：2.754 ）

ISSN： 0021-8995

年卷期： 2017 年 134 卷 22 期

页码：

收录情况： SCI

摘要： A composting method was applied to improve the processability of rice straw (RS) and its interfacial interaction with a biodegradable resin, hydrolyzed-soy-protein-modified urea formaldehyde adhesives. The composted RS was characterized by fiber testing, Fourier transform infrared spectroscopy, thermogravimetry, differential scanning calorimetry, and scanning electron microscopy. We found that the particle size of RS was reduced from 0.6-2.0 to 0.2-0.6mm. The cellulose content decreased, and the lignin content increased; unstable bonds were decomposed after composting. All of the results were beneficial for improving the plasticity of RS. Composted RS with inoculant exhibited a higher peak degradation temperature (352 degrees C) than the untreated RS (347 degrees C). The porous structure and tissue in RS were destroyed by the microorganism. The best bonding results were obtained by the composted RS with inoculant. Compared with untreated composites, the modulus of rupture, modulus of elasticity, and tensile strength of the composites were improved by 14.94, 25.36, and 27.21%, respectively. In addition, a mechanism of the structural changes of RS during composting was also proposed. The full biodegradable composites have potential applications in agriculture toward the achievement of sustainable development. (c) 2017 Wiley Periodicals, Inc.

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[1]Physical, Chemical, and Rheological Properties of Rice Husks Treated by Composting Process. Wu, Guofeng,Qu, Ping,Sun, Enhui,Chang, Zhizhou,Xu, Yueding,Huang, Hongying. 2015

[2]The feeding quality of rice (Oryza sativa L.) straw at different cutting heights and the related stem morphological traits. Dong, Chen Fei,Ding, Cheng Long,Xu, Neng Xiang,Cheng, Yun Hui,Gu, Hong Ru,Shen, Yi Xin.

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[4]Study on the Rice Straw Pretreated with NaOH for Biogasification. Li, Jiayou,Yu, Jianxing,Cai, Liling,Ruan, Shanming,Ye, Xiaomei,Chang, Zhizhou. 2011

[5]FEASIBILITY OF ANAEROBIC BATCH CO-DIGESTION OF PEAT AND RICE STRAW FOR BIOGAS PRODUCTION. Chen, Guangyin,Chang, Zhizhou,Ye, Xiaomei. 2011

[6]Enzymatic Hydrolysis of Rice Straw Pretreated with Ammonia. Li, Jiayou,Ruan, Shanming,Cai, Liling,Yei, Xiaomei,Chang, Zhizhou. 2010

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