研究了纳米碳酸钙/SBS或mSBS/聚苯乙烯共混物体系的力学性能和形态.由于mSBS和纳米碳酸钙较强的相互作用,在PS复合材料体系中,更多的纳米碳酸钙进入弹性体相,原位形成了以纳米碳酸钙为核、弹性体为壳层的结构.这种结构增加了弹性体的体积分数,放大了弹性体的作用,减少了分散到脆性PS基体中的纳米碳酸钙粒子(尤其是纳米碳酸钙团聚体)数量,从而避免了对复合材料体系的不利影响;另一方面,可通过提高无机粒子的填充率降低材料成本.
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