利用差示扫描量热仪及扫描电子显微镜,分别对结构可控聚丙烯-b-聚甲基丙烯酸甲酯共聚物和聚丙烯-b-聚苯乙烯共聚物用于聚烯烃共混体系的热性能及相容性进行了研究.实验结果表明,这些功能化的聚丙烯嵌段共聚物基本上保持了原有聚丙烯高熔点等优良特性,并对它们相应共混体系有明显的增容作用.另外,这些功能化的聚丙烯嵌段共聚物能提高它们相应共混体系的弯曲强度和弯曲模量等力学性能.

Differential scanning calorimeter and scanning electron microscopy were used to study effect of well-defined functional i-PP-b-PMMA block copolymer in PP/PMMA blends and that of i-PP-b-PS block copolymer in PP/PS blends. The experimental results showed these functional polypropylene copolymers maintained characteristics of high melting point owned by starting isotactic polypropylene polymers, and were clearly proven to be effective compatibilizer in PP/PMMA blends and PP/PS blends. In addition, i-PP-b-PMMA and i-PP-b-PS could increase bending strength and bending modulus of corresponding blending systems.