A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS*

DONG Lisong; ZHUANG Yugang; LI Shichun; FENG Zhiliu

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A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS*

Papers | Updated：2021-06-21

- A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS*
- Vol. 10, Issue 1, Pages: 15-19(1992)
- Affiliations：
  
  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022)Fomerly E.I.L.Voong and Voong Tse-Lieu
  2.   Changchun Institute of Applied Chemistry
  3.   Academia Sinica
  4.   130022
  5.   Fomerly E.I.L.Voong and Voong Tse-Lieu
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 March 1992
- Accepted：
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[1]董丽松,庄宇纲,李诗春,冯之榴.A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS[J].Chinese Journal of Polymer Science,1992,{4}(01):15-19.

DONG Lisong, ZHUANG Yugang, LI Shichun, et al. A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS*[J]. 1992, 10(1): 15-19.
[1]董丽松,庄宇纲,李诗春,冯之榴.A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS[J].Chinese Journal of Polymer Science,1992,{4}(01):15-19. DOI：

DONG Lisong, ZHUANG Yugang, LI Shichun, et al. A DYNAMIC MECHANICAL ANALYSIS STUDY OF THE TRANSITION BEHAVIOUR OF I-PP/EPDM BLENDS*[J]. 1992, 10(1): 15-19. DOI：

摘要

<正> The transition behaviour of the blends of isotactic polypropylene （i-PP） with ethylene-propylene terpolymer （EPDM） containing 42 wt% propylene was investigated by dynamic mechanical analysis technique （DMA）. Owing to its high propylene content

EPDM is compatible with i-PP to some degree. The interaction between the two components was strengthened. As expected

for partially compatible system the glass transition temperature of i-PP in the blends shifted to lower temperature. It was found that there existed two transitions

αEPDM and βEPDM

for the EPDM used in this work. The former was considered to be the glass transition of the random chain segments of EPDM

while the latter the local motion of the long ethylene sequences in EPDM. The unusual transition behaviour of αEPDM in the blends was explained in terms of the greater thermal expansion of EPDM and the compatibility of the two components. On the other hand

the βEPDM changed with the composition of the blends in a regular manner.

Abstract

The transition behaviour of the blends of isotactic polypropylene （i-PP） with ethylene-propylene terpolymer （EPDM） containing 42 wt% propylene was investigated by dynamic mechanical analysis technique （DMA）. Owing to its high propylene content

EPDM is compatible with i-PP to some degree. The interaction between the two components was strengthened. As expected

for partially compatible system the glass transition temperature of i-PP in the blends shifted to lower temperature. It was found that there existed two transitions

αEPDM and βEPDM

for the EPDM used in this work. The former was considered to be the glass transition of the random chain segments of EPDM

the βEPDM changed with the composition of the blends in a regular manner.

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