Issue 60, 2014
From the journal:

RSC Advances

Hierarchically oriented crystalline structures of HDPE induced by strong second melt penetration

Rui-Yan Zhang,a   Wei Yang,a   Jing-Jing Wu,a   Jian Feng,a   Jian-Ming Feng,a   Bang-Hu Xiea  and  Ming-Bo Yang*a  

* Corresponding authors

a College of Polymer Science & Engineering, and the State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
E-mail: yangmb@scu.edu.cn
Fax: +86 02885405234
Tel: +86 02885401988

Abstract

Recently, a melt-penetrating process in which the first melt suffered from only one direction penetrating action was achieved by our home-made multi-melt multi-injection molding (MMMIM). In this work, a high-density polyethylene (HDPE) melt was penetrated by a high-speed second HDPE melt via an MMMIM instrument. It was found that hierarchically oriented crystalline structures were generated in the melt-penetrating sample along the thickness, investigated by SEM, synchrotron 2D-WAXD and 2D-SAXS; however, only isotropic spherulites were formed in non-melt-penetrating samples. 2D-WAXD/2D-SAXS results demonstrated that in the melt-penetrating sample, the degree of orientation in the subskin layer was larger than that in other layers, and confirmed the existence of the shish–kebab structures.

Graphical abstract: Hierarchically oriented crystalline structures of HDPE induced by strong second melt penetration

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Article information

DOI
https://doi.org/10.1039/C4RA03404J
Article type
Paper
Submitted
15 Apr 2014
Accepted
24 Jun 2014
First published
24 Jun 2014

RSC Adv., 2014,4, 31960-31968

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Hierarchically oriented crystalline structures of HDPE induced by strong second melt penetration

R. Zhang, W. Yang, J. Wu, J. Feng, J. Feng, B. Xie and M. Yang, RSC Adv., 2014, 4, 31960 DOI: 10.1039/C4RA03404J

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