会议专题

Preparation of high performance biobased composites from poly(lactic acid) and microcrystalline cellulose

The high performance biobased composites were prepared from poly (lactic acid) (PLA) and microcrystalline cellulose (MC) fibers by graft modification. The morphology, mechanical and thermodynamic properties of the composites were investigated. Fourier transform infrared spectroscopy (FTIR) showed that a kind of grafted microcrystalline cellulose (g-MC) had been successfully synthesized by lactic acid modification. Compared to neat resin, the tensile strength of the composites is significantly higher, and some of the composites even have a perfect breaking elongation rate. This is due to the cellulose fibers that added to the PLA matrix may act as reinforcements. Furthermore, compared to the PLA/MC composites, the PLA/g-MC composites have a good appearance shape and light transmittance, demonstrated that the g-MC had much better dispersion and homogeneity in the composites. Differential scanning calorimetry(DSC) showed that the glass transition temperature (Tg) and the melting point (Tm) of the PLA/g-MC composites decrease, while the crystallization temperature (Tc) of the PLA matrix increases, which indicated that the presence of g-MC improves the crystallization behaviors of PLA.

XIAO Lin FU Biao YU Longjiang YANG Guang

National Engineering Research Center for Nano-Medicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China

国际会议

2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)

上海

英文

525-528

2009-10-21(万方平台首次上网日期,不代表论文的发表时间)