Studies of Crystallization of High Density Polyethylene under High Hydrostatic Pressure

WU Rui-Qi; WANG Hui; YANG Guang-Qun; HUANG Rui

doi:10.11858/gywlxb.1989.02.011

Volume 3 Issue 2

Jul 2015

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Article Contents

Chinese Journal of High Pressure Physics > 1989 > 3(2): 165-171 .

WU Rui-Qi, WANG Hui, YANG Guang-Qun, HUANG Rui. Studies of Crystallization of High Density Polyethylene under High Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 1989, 3(2): 165-171 . doi: 10.11858/gywlxb.1989.02.011

Citation:

WU Rui-Qi, WANG Hui, YANG Guang-Qun, HUANG Rui. Studies of Crystallization of High Density Polyethylene under High Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 1989, 3(2): 165-171 . doi: 10.11858/gywlxb.1989.02.011

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Studies of Crystallization of High Density Polyethylene under High Hydrostatic Pressure

doi: 10.11858/gywlxb.1989.02.011

1.
Institute of High-Temperature and High-Pressure Physics, Chengdu University of Science and Technology, Chengdu 610065, China;
2.
Department of Plastic Engineering, Chengdu University of Science and Technology, Chengdu 610065, China

More Information

Corresponding author: WU Rui-Qi
Received Date: 08 Dec 1988
Rev Recd Date: 08 Dec 1988
Publish Date: 05 Jun 1989

Abstract

Abstract

High density polyethylene has been crystallized under a pressure 1 GPa to 2 GPa and cooled at 5 ℃ per minute from the melting point. The solids were analyzed at atmosphere pressure by DSC, SEM and WAXD. The data show that the crystalline content of the samples by WAXD increases to 89.9% from 68.2% of the original material. Extended chain lamellae have thickened from 14 nm to 25 nm. DSC and SEM observations show the existence of the extended chain lamellae. Controlling of high pressure and temperature is the key of the formation of extended-chain crystals.
- extended chain lamellae,
- polyethylene