Preparation and characterization of thermoplastic starch/bamboo shoot processing by-product microcrystalline cellulose composites
文献类型： 外文期刊
作者： Du, Jingjing 1 ; Yang, Song 1 ; Zhu, Qian 1 ; Wu, Yuhan 1 ; Guo, Jiagang 1 ; Jiang, Jian 1 ;
作者机构： 1.Anhui Acad Agr Sci, Inst Agroprod Proc, Hefei 230001, Anhui, Peoples R China
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
年卷期：
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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