SYNTHESIS OF iPS-b-iPP BLOCK COPOLYMER WITH HIGH FUNCTIONAL ACTIVE SN CATALYST lI．STRUCTURAL CHARACITERIZATION AND PROPERTIES OF iPS-b-iPP BIXNLX COPOLYMER

XU Guangxue; LIN Shangan

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SYNTHESIS OF iPS-b-iPP BLOCK COPOLYMER WITH HIGH FUNCTIONAL ACTIVE SN CATALYST lI．STRUCTURAL CHARACITERIZATION AND PROPERTIES OF iPS-b-iPP BIXNLX COPOLYMER

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF iPS-b-iPP BLOCK COPOLYMER WITH HIGH FUNCTIONAL ACTIVE SN CATALYST lI．STRUCTURAL CHARACITERIZATION AND PROPERTIES OF iPS-b-iPP BIXNLX COPOLYMER
- Acta Polymerica Sinica Issue 5, Pages: 583-590(1996)
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- Published：20 October 1996，
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XU Guangxue, LIN Shangan. SYNTHESIS OF iPS-b-iPP BLOCK COPOLYMER WITH HIGH FUNCTIONAL ACTIVE SN CATALYST lI．STRUCTURAL CHARACITERIZATION AND PROPERTIES OF iPS-b-iPP BIXNLX COPOLYMER. [J]. Acta Polymerica Sinica (5):583-590(1996)
DOI：

XU Guangxue, LIN Shangan. SYNTHESIS OF iPS-b-iPP BLOCK COPOLYMER WITH HIGH FUNCTIONAL ACTIVE SN CATALYST lI．STRUCTURAL CHARACITERIZATION AND PROPERTIES OF iPS-b-iPP BIXNLX COPOLYMER. [J]. Acta Polymerica Sinica (5):583-590(1996) DOI：

摘要

报道用稀土化合物改性的钛系截体催化剂（ＳＮ催化剂）进行苯乙烯和丙烯顺序嵌段共聚合（Ｓｅｑｕｅｎｔｉａｌｂｌｏｃｋｃｏｐｏｌｙｍｅｒｉｚａｔｉｏｎ）的研究

通过对初生嵌段共聚产物进行溶剂萃取与分级

并用１３Ｃ－ＮＭＲ、ＷＡＸＤ．ＤＳＣ

ＤＭＡ和电子显微镜进行表征

推断共聚物为具有等规聚苯乙烯链和等规聚丙烯链段的Ａ－Ｂ型二嵌段共聚物

且各段均能结晶。发现嵌段共聚物比相应的均聚物具有较好的综合力学性能和热性能

而且对ｉＰＳ／ｉＰＰ共混具有良好的增容作用。

Abstract

Sequential block copolymerizations of styrene with propylene were carriedout with MgCl2-supported TiCl4 catalyst modified with rare earth compound of NdClx (OR)y (called SN catalyst) which was developed in our laboratory．Afterfractionating by successive solvent extraction with suitable solvents

the remainingcopolymer was subjected to extensive molecular and morphological characterization with 13C-NMR

WAXD

DSC

DMA

TEM．The results of these experiments indi-cate that the purified polymers are a crystalline diblock copolymer of isotacticpolystyrene and isotactic polypropylene

with 15～85 mol％styrene-unit content．The diblock copolymer has superior mechanical and thermal properties to their corre-sponding homopolymers．

关键词

苯乙烯－丙烯共聚物苯乙烯丙烯结构表征

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