A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS

GUO Shaoyun; LI Huilin; XU Xi

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A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS

Papers | Updated：2021-06-21

- A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS
- Vol. 9, Issue 3, Pages: 226-231(1991)
- Affiliations：
  
  1. Polymer Research Institute, Chengdu University of Science and Technology,Chengdu,610065
  2. Chengdu University of Science and Technology
  3. Chengdu 610065
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 September 1991
- Accepted：
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[1]郭少云,李惠林,徐僖.A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS[J].Chinese Journal of Polymer Science,1991,{4}(03):226-231.

GUO Shaoyun, LI Huilin, XU Xi. A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS[J]. 1991, 9(3): 226-231.
[1]郭少云,李惠林,徐僖.A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS[J].Chinese Journal of Polymer Science,1991,{4}(03):226-231. DOI：

GUO Shaoyun, LI Huilin, XU Xi. A STUDY ON THE MORPHOLOGY AND PROPERTIES OF IPP/IIR BLENDS[J]. 1991, 9(3): 226-231. DOI：

摘要

<正> The effect of isobutylene-isoprene rubber （IIR） on the crystallizing behavior of isotactic polypropylene （IPP） as well as the morphology of the blends in relation with its properties have been studied by DSC

WAXD

polarized light microscope

SEM and mechanical properties test. The experimental results show that IIR has slight influence on melting point

crystallinity

crystallization rate of IPP. It seems certain that IIR has not entered into IPP phase in melt state. IIR has retarding action on the growth of IPP crystal and is an effective nucleating agent of IPP spherulites. The impact strength of the blend increases rapidly with IIR content more than 30 parts; the tensile strength of the blend

however

decreases as IIR content increases. The temperature and time of alter heat-treatment also have great influence on the impact strength of the blend. The impact strength of IPP/IIR （100/20） heat-treated at about 130℃for 2h is 5 times as high as that of the untreated blend.

Abstract

The effect of isobutylene-isoprene rubber （IIR） on the crystallizing behavior of isotactic polypropylene （IPP） as well as the morphology of the blends in relation with its properties have been studied by DSC

WAXD

polarized light microscope

SEM and mechanical properties test. The experimental results show that IIR has slight influence on melting point

crystallinity

however

decreases as IIR content increases. The temperature and time of alter heat-treatment also have great influence on the impact strength of the blend. The impact strength of IPP/IIR （100/20） heat-treated at about 130℃ for 2h is 5 times as high as that of the untreated blend.

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