HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION
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HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION
HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION
高分子科学(英文版)2007年第3期 页码:285-290
Affiliations:
1. Department of Polymer Science & Materials Sichuan University
2. State Key Laboratory of Polymer Materials Engineering
3. Chengdu 610065
4. China
Author bio:
Funds:
This work was financially supported by the National Natural Science Foundation of China (Nos. 20404008, 50533050 and 20490220)();This work was subsidized by the Special Funds for Major State Basic Research Projects of China (No. 2003CB615600).()
DOI:
中图分类号:TQ317
纸质出版:2007
Accepted:
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[1]傅强.HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION[J].Chinese Journal of Polymer Science,2007(03):285-290.
HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION[J]. 2007, (3): 285-290.
[1]傅强.HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION[J].Chinese Journal of Polymer Science,2007(03):285-290.DOI:
HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION[J]. 2007, (3): 285-290.DOI:
HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION
the viscous stress at various strains during tensile deformation of oriented polyolefin samples including high density polyethylene (HDPE)
linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP)
has been determined. The viscous stress in the oriented samples takes up to 50%-70% of the total stress
which is unusually high compared with their isotropic counterparts. The unusual high viscous stress was discussed based on mainly the existence of shish structure in oriented polyolefins
which could enhance the inter-lamella coupling significantly.
Abstract
In this communication
by means of stress relaxation experiments
the viscous stress at various strains during tensile deformation of oriented polyolefin samples including high density polyethylene (HDPE)
linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP)
has been determined. The viscous stress in the oriented samples takes up to 50%-70% of the total stress
which is unusually high compared with their isotropic counterparts. The unusual high viscous stress was discussed based on mainly the existence of shish structure in oriented polyolefins
which could enhance the inter-lamella coupling significantly.
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