Microfibrillated cellulose modified with urea and its reinforcement for starch-based bionanocomposites
作者： Yu Tian , PuXin Zhu , Mi Zhou , Ronghui Guo , Fei Cheng
DOI: 10.1007/S10570-019-02505-X
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摘要: The aim of this study was to improve the dispersion microfibrillated cellulose (MFC) in starch matrix. For this, a kind urea-modified (U-MFC) prepared with microwave-aided method from MFC and urea. introduction carbamate group confirmed by Fourier transform infrared spectroscopy nitrogen content analysis. A better one modified fillers, 300 WU, under conditions microwave power 300 W for 5 min, degree substitution 0.14. Starch/nanocellulose biomass films were solution casting method. results relating properties showed that as 300 WU 4 wt%, tensile strength starch/300 WU nanocomposite film increased 88.3% 37.4%, compared without filler starch/MFC composite same content, respectively. Also, thermal stability slightly, transparency starch/nanocellulose when addition amount 0.5%. In view more evenly dispersed U-MFC matrix observed scanning electron microscope, mechanism behind performance improvement speculated be chemical modification increases compatibility between
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