Preparation and characterization of thermoplastic starch/bamboo shoot processing by-product microcrystalline cellulose composites

文献类型： 外文期刊

第一作者： Du, Jingjing

作者： Du, Jingjing;Yang, Song;Zhu, Qian;Wu, Yuhan;Guo, Jiagang;Jiang, Jian

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关键词： Bamboo shoot processing by-products; Microcrystalline cellulose; Thermoplastic starch; Esterified microcrystalline cellulose

期刊名称：BIOMASS CONVERSION AND BIOREFINERY （ 影响因子：4.987； 五年影响因子：4.151 ）

ISSN： 2190-6815

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页码：

收录情况： SCI

摘要： Bamboo shoot processing by-products (BPSs) hve been regarded as an agricultural waste. How to utilize cellulose from BPSs at value-added utilization has attracted environmental and industrial interest. Crude cellulose was isolated from BPSs and then converted into microcrystalline cellulose (MCC). MCC from BPSs was modified by using soybean oil. A new peak emerged at 1745 cm(-1) of the modified MCC was attributed to the C = O stretching from esters in the Fourier transform infrared spectra. The results of X-ray diffraction showed that the crystalline structure of MCC was not destroyed during the modification. The esterified microcrystalline cellulose (E-MCC) displayed a higher thermal stability. The effects of MCC and E-MCC on the structural, mechanical, and barrier properties of thermoplastic starch (TPS) were studied. The results showed that E-MCC was dispersed better in the composite films than MCC. TPS was incorporated with 5wt% E-MCC had tensile strength of 5.21 MPa, Young's modulus equally of 38.87 MPa, and elongation at break of 33.72%. Moreover, the TPS/E-MCC films exhibited better water vapor barrier properties. This study proves that MCC obtained from BPSs can be used as composites filler, and the modified MCC displayed a higher affinity for thermoplastic starch.

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