Citation: Da-Shan Mi, Feng-Yi Hou, Man Zhou, Jie Zhang. Distribution of α-, β-, and γ-Phases in a Multi-flow Injection-molded Hierarchical Structure[J]. Chinese Journal of Polymer Science, ;2018, 36(6): 765-775. doi: 10.1007/s10118-018-2057-3 shu

Distribution of α-, β-, and γ-Phases in a Multi-flow Injection-molded Hierarchical Structure

College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China

Corresponding author: Jie Zhang, zhangjie@scu.edu.cn
Received Date: 9 September 2017
Accepted Date: 7 October 2017
Available Online: 26 February 2018

In the current work, a custom-made vibration injection molding device that can provide oscillatory pressure was utilized to create an injection-molded hierarchical structure. Growth competition among α, β, and γ phases in the injection-molded structure can be studied because of the presence of this hierarchical structure, wherein shish-kebab and spherulite layers were arranged alternately along the thickness direction. The γ crystals only existed in layers subjected to high pressure and shear stress, whereas β crystals formed between the shear layers. The change in trend of the γ fraction was similar to that of parent-to-daughter ratio. In addition, this hierarchical and alternating crystal structure can sharply increase the mechanical properties.
- Shish-kebab,
- Growth competition,
- α Phase,
- γ Phase,
- β Phase
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