PPO作为PPO-PDMS-PHS_n/PS增容剂的研究

STUDY OF PPO AS COMPATIBILIZER FOR PPO PDMS PHS/PS BLENDS

导了一种新的共混增容体系，以均聚物ＰＰＯ作为不相容共混体系ＰＰＯ－ＰＤＭＳ－ＰＨＳ／ＰＳ的增容剂。ＤＳＣ和ＤＭＡ的研究结果表明，ＰＰＯ对ＰＰＯ－ＰＤＭＳ－ＰＨＳ／ＰＳ共混体系确有增容作用，ＰＰＯ的含量在１３．５％以下时，ＰＳ、ＰＰＯ和ＰＰＯ－ＰＤＭＳ－ＰＨＳ中的硬段相容为一相；ＰＰＯ的含量在２３．８％以上时，ＰＰＯ分布在ＰＳ相和ＰＰＯ－ＰＤＭＳ－ＰＨＳ中的硬段相中，经ＰＰＯ增容后，材料的拉伸性能明显提高。

A study of PPO as compatibilizer for the immiscible blend of a ternary segmented copolymer PPO PDMS PHS with homopolymer PS by using DSC, DMA and tensile testing techniques. The results indicate that PPO is a good compatibilizer for PPO PDMS PHS/PS blend, as the addition of PPO into the immiscible blend either makes PS, PPO segments and PPO miscible one another in one phase(content of PPO≤13.5%) or PPO act as a bridge between PS and PPO segments(content of PPO≥23.8%), which will result in improvement of the tensile properties of the blend.