Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

Citation: Ding-ding Hu, Shi-bing Ye, Fei Yu, Jia-chun Feng. Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains[J]. Chinese Journal of Polymer Science, 2016, 34(3): 344-358. doi: 10.1007/s10118-016-1745-0 shu

Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

1.
State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Fudan University, Shanghai 200433, China

通讯作者: Jia-chun Feng,

基金项目:
This work was financially supported by the National Natural Science Foundation of China (Nos. 21174032 and 21574029) and China National Petroleum Corporation. We also greatly thank for the beam time provided by beamline BL16B1 of Shanghai Synchrotron Radiation Facility (Z14sr0051).

摘要: The introduction of concept of the three domains of isotactic polypropylene (iPP) by Wittmann and Lotz et al. is an important advance in understanding the influence of the melt structures on the crystallization behaviors and consequent properties. To further understand the physical nature of the melt structures, the crystalline structures of iPP after thermal treatment in the three domains are systematically investigated. It is found that after treated at different domains the crystal morphologies, including the sizes and birefringence of spherulitic, the proportion of radial and tangential lamellae, etc., have distinctly different features. Our study reveals that the nuclei at domain II compose of locally ordered chains and the induced memory effect could not be erased under annealing treatment, while the nuclei at domain III compose of crystal fragments, which will aggregate under annealing process. Based on our results, highly schematic diagrams are proposed to illustrate the probable physical characteristics of the melt structures at the three different domains.

关键词:

English

Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

1.
State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Fudan University, Shanghai 200433, China

Corresponding author: Jia-chun Feng,

Received Date: 12 September 2015
Revised Date: 07 October 2015
Available Online: 05 March 2016
Fund Project:
This work was financially supported by the National Natural Science Foundation of China (Nos. 21174032 and 21574029) and China National Petroleum Corporation. We also greatly thank for the beam time provided by beamline BL16B1 of Shanghai Synchrotron Radiation Facility (Z14sr0051).

Abstract: The introduction of concept of the three domains of isotactic polypropylene (iPP) by Wittmann and Lotz et al. is an important advance in understanding the influence of the melt structures on the crystallization behaviors and consequent properties. To further understand the physical nature of the melt structures, the crystalline structures of iPP after thermal treatment in the three domains are systematically investigated. It is found that after treated at different domains the crystal morphologies, including the sizes and birefringence of spherulitic, the proportion of radial and tangential lamellae, etc., have distinctly different features. Our study reveals that the nuclei at domain II compose of locally ordered chains and the induced memory effect could not be erased under annealing treatment, while the nuclei at domain III compose of crystal fragments, which will aggregate under annealing process. Based on our results, highly schematic diagrams are proposed to illustrate the probable physical characteristics of the melt structures at the three different domains.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

通讯作者: Jia-chun Feng,

English

Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

Corresponding author: Jia-chun Feng,

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

通讯作者: Jia-chun Feng,

English

Further Understanding on the Three Domains of Isotactic Polypropylene by Investigating the Crystalline Morphologies Evolution after Treatment at Different Domains

Corresponding author: Jia-chun Feng,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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