Further understanding on the three domains of isotactic polypropylene by investigating the crystalline morphologies evolution after treatment at different domains
Further understanding on the three domains of isotactic polypropylene by investigating the crystalline morphologies evolution after treatment at different domains
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通过研究不同区域处理后的结晶形貌演变，进一步了解等规聚丙烯的三个区域
DOI：
10.1007/s10118-016-1745-0
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发表时间：
2016-01
影响因子：
4.3
通讯作者：
Jiachun Feng
中科院分区：
文献类型：
--
作者：
Dinding Hu;Shibing Ye;Fei Yu;Jiachun Feng
Wittmann和Lotzet提出的等规聚丙烯（iPP）三畴概念是理解熔体结构对结晶行为和性能影响的重要进展。al.is为了进一步了解熔体结构的物理本质，系统地研究了热处理后iPP在三个区域的结晶结构。结果表明，不同畴化处理后，球晶尺寸、球晶双折射率、径向和切向片晶比例等晶体形貌均发生了变化，有明显不同的特征。研究表明，结构域II的“核”由局域有序的链组成，退火处理不能消除诱导的记忆效应，而结构域III的“核”由晶体碎片组成，退火处理会使晶体碎片聚集.基于我们的研究结果，高度示意图，提出了说明熔体结构在三个不同的域的可能的物理特性。
The introduction of concept of the three domains of isotactic polypropylene (iPP) by Wittmann and Lotzet 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.
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DOI：
10.1002/pol.1975.180130713
发表时间：
1975-07
期刊：
Journal of Polymer Science Part B
影响因子：
--
作者：
R. Samuels
通讯作者：
R. Samuels
DOI：
10.1002/polb.21551
发表时间：
2008-10
期刊：
Journal of Polymer Science Part B
影响因子：
--
作者：
F. Medellín-Rodríguez;Manuel Mata-Padilla;S. Sánchez-Valdes;S. Vega-Díaz;O. Dávalos-Montoya
通讯作者：
F. Medellín-Rodríguez;Manuel Mata-Padilla;S. Sánchez-Valdes;S. Vega-Díaz;O. Dávalos-Montoya
影响因子：
4.6
作者：
Martins, Jose A.;Zhang, Weidong;Brito, Antonio M.
通讯作者：
Brito, Antonio M.
影响因子：
4.6
作者：
Mingzong Zhang;D. T. Lynch;S. Wanke
通讯作者：
Mingzong Zhang;D. T. Lynch;S. Wanke
影响因子：
4.6
作者：
Koji Yamada;S. Matsumoto;Katsuharu Tagashira;M. Hikosaka
通讯作者：
Koji Yamada;S. Matsumoto;Katsuharu Tagashira;M. Hikosaka