化工学报Issue(7)：2718-2724,7.DOI:10.11949/j.issn.0438-1157.20141682
聚碳酸亚丙酯/热塑性氧化淀粉的流变、形态和性能
Rheological behavior, morphology and mechanical property of poly(propylene carbonate)/thermoplastic oxidized starch composites
摘要
Abstract
Maleic anhydride grafted poly(propylene carbonate) (PPCMA)/thermoplastic starch (TPS), PPCMA/thermoplastic oxidized starch (TPOS) and PPCMA/DL-TPOS (TPOS modified by aluminate coupling agent) composites were prepared by melt blending. Effects of starch oxidation and content of DL and DL-TPOS on rheological behavior, morphology and mechanical properties of composites were investigated. The results of Fourier Transform Infrared Spectroscopy (FTIR) revealed that the reinforcement in mechanical properties of PPC/starch composites was probably resulted from hydrogen-bonding interaction between carbonyl groups of PPC and hydroxyl groups of starch. The compatibility between PPCMA and TPOS was better than that of PPCMA and TPS. The mechanical property, storage modulus (G′), loss modulus (G″) and complex viscosity (η∗) of composites were improved by oxidation of starch. Moreover, the dispersion of TPOS in PPC matrix became better when starch was modified by DL, improving the tensile strength of composites. For PPCMA/DL-TPOS composites, the tensile strength increased by 460% from 2.45 MPa to 13.72 MPa, when DL-TPOS content was from 0 to 40%(mass), while it decreased when the loading of DL-TPOS was 50%(mass). In addition, G′, G″andη∗ of composites was improved with increasing DL-TPOS content.关键词
聚碳酸亚丙酯/热塑性氧化淀粉/铝酸酯/复合材料/力学性能/流变性能Key words
poly(propylene carbonate)/thermoplastic oxidized starch/aluminate coupling agent/composites/mechanical property/rheological property分类
通用工业技术引用本文复制引用
蒋果,徐景活,冯健,黄汉雄,张水洞..聚碳酸亚丙酯/热塑性氧化淀粉的流变、形态和性能[J].化工学报,2015,(7):2718-2724,7.基金项目
广东省自然科学基金项目（2014A030313235）；广州市珠江科技新星项目（2013J2200013）。 （）
