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中文摘要：
采用溶剂辅助原位分散方法,制备纳米二氧化硅（nano-SiO2）/聚（癸二酸-甘油-柠檬酸）酯（PGSC）生物弹性体复合材料。通过FTIR、SEM、广角X射线衍射（WXRD）、DSC以及力学测试等手段,对复合材料的结构和性能进行了表征。PGSC基体不仅对nano-SiO2产生包覆,还与nano-SiO2之间形成化学结合。随nano-SiO2质量分数增加,其在基体中的分散更精细均匀。nano-SiO2的加入消弱了基体的有序结构,但是无机填料网络的形成则使复合材料的有序结构增强;加入少量nano-SiO2有利于提高基体的玻璃化转变温度（Tg）,但加入较多nano-SiO2时,Tg反而降低。复合材料具有优良的回弹性,其拉伸强度和模量随nano-SiO2质量分数的增加而提高;当质量分数为16.67%时,强度和模量分别提高了602.20%和258.21%。
英文摘要：
Nano-SiO2/poly（glycerol-sebacate-citrate）（PGSC） bioelastomer composites were prepared by solvent assistant in-situ dispersion technique,and their structure and properties were characterized by FTIR,SEM,WXRD,DSC and tensile tests.Results demonstrate that nano-SiO2 is imbedded in the PGSC matrixes,and chemical bonding is formed between them.Nano-SiO2 presents finer and more homogeneous dispersion with the increasing of its mass fractions.The ordered structures of the matrixes are weakened after nano-SiO2 is added,but the ordered structures of the composites are intensified with the formation of inorganic filler networks.The glass transition temperature（Tg） of the matrix increases when the nano-SiO2 mass fraction is lower,while the Tg decreases when its mass fraction is higher.The composites possess excellent resilience,and their tensile strength and modulus rise with the increasing of nano-SiO2 mass fractions,separately rising by 602.20% and 258.21% at its mass fraction of 16.67% than those of the pure matrixes.
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