Effect of Molecular Weight Distribution on Isothermal Crystallization Kinetics of Bimodal Polyethylene Resin for Films

doi:10.19491/j.issn.1001-9278.2018.02.007

Abstract

Abstract: Isothermal crystallization kinetics of two types of bimodal polyethylene resins (9455F1-W and 9455F1-100) for films was studied in this work, and the effect of bimodal molecular weight distribution on their crystallization behavior was discussed. The results from gel permeation chromatography measurements indicated that these two types of resins exhibited a bimodal distribution feature. They had a similar molecular weight but different fractions in high- and low-molecular-weight macromolecules. 9455F1-W sample had a higher fraction in-molecular-weight macromolecules than 9455F1-100 sample. Isothermal crystallization investigation indicated that the crystallization rate constant increased with an increase in the fraction of low-molecular-weight macromolecules, and however the half crystallization time decreased, suggesting an increase in crystallization rate.

CLC Number:

TQ325.1+2

References

[1] 夏天. HDPE双峰薄膜树脂JHM9455F的开发与应用[J]. 合成树脂及塑料，2009, 26（1）：47-53.
[1] Xia Tian. Development and Application of Bimodal HDPE for Film[J]. China Syngthetic Resin and Plastics, 2009, 26（1）：47-53.
[2] 李红明，张明革，袁苑，等. 双峰分子量分布聚乙烯的研发进展[J]. 高分子通报，2012, 4:1-10.
[2] Li Hongming, Zhang Mingge, Yuan Yuan, etal. Progress in Research and Development of Bimodal Polyethylene[J]. Polymer Bulletin, 2012, 4:1-10.
[3] 陈铭, 孙旭辉, 陆秋欢. 双峰PE树脂的结构与性能[J]. 合成树脂及塑料, 2008, 15 (3):58-61.
[3] Chen Min, Sun Xuhui, Lu Qiuhuan. Structure and Properties of Bimodal Polyethylene Resin[J]. China Syngthetic Resin and Plastics, 2008, 15 (3):58-61.
[4] 陈光岩，李连鹏，赵新刚，等. 9455F与国内外HDPE膜材料的结构对比及剖析[J]. 弹性体，2010，20(1)：74-76.
[4] Chen Guangyan, Li Lian-peng, Zhao Xingang, etal. Structral Analysis of Domestic and Import HDPE Film Grade Materials[J]. China Elastomerics, 2010, 20(1):74-76.
[5] 袁园，丁雪佳 ,张德强，等. 双峰聚乙烯/PA6共混体系的结晶行为和力学性能[J].塑料工业, 2010, 38(8):18-21.
[5] Yuan Yuan, Ding Xuejia, Zhang Deqiang, etal. Crystallization Behavior and Mechanical Properties of Bimodal Polyethylene/PA6 Blends[J]. China Plastics Industry, 2010, 38(8):18-21.
[6] 姜娜. 双峰HDPE/LDPE在热压历史条件下结晶行为的研究[D].湘潭：湘潭大学, 2007.
[6] JIANG Na. The Crystallization Behaviors of Bimodal HDPE/LDPE under Different Thermal and Pressure Histories[D]. Xiang Tan: Xiang Tan University, 2007.
[7] 徐晓多，刘锐，李桂娟. PET/PEN/成核剂共混物的等温结晶动力学[J]. 合成树脂及塑料，2016，33(1)：61-64.
[7] Xu Xiaoduo，Liu Rui， Li Guijuan. Study on Isothermal Crystallization Kinetics of PET/PEN/Nucleating Agents Blend System[J]. China Syngthetic Resin and Plastics, 2016, 33(1): 61-64.
[8] 王向东，刘本刚，刘海明，等. 高相对分子质量成核剂改性聚丙烯的非等温结晶动力学和力学性能研究[J]. 中国塑料，2012，26(2):87-92.
[8] Wang Xiangdong, Liu Bengang, Liu Minghai, etal. Study on Mechanical Property and Nonisothermal Crystallization Kinetics of High Relative Molecular Mass Nucleating Agent Modified Polypropylene[J]. China Plastics, 2012, 26(2):87-92.
[9] 李杨，娄金分，周琴. 成核剂对聚丙烯非等温结晶动力学的影响[J]. 广州化工，2016，44(17)：75-77.
[9] Li Yang，Lou Jinfen，Zhou Qin. Influence of Different Nucleating Agents for Polypropylene Nonisothermal Crystallization kinetics[J]. Guang Zhou Chemical Industry, 2016，44(17): 75-77.
[10]马晓燕, 梁国正，曹中林，等. 聚丙烯/聚烯烃弹性体共混物非等温结晶动力学及力学性能研究[J].中国塑料，2004，18(7)：11-15.
[10] Ma Xiaoyan, Liang Guozheng, Cao Zhonglin, etal. Non-Isothermal Crystallization Kinetics and Mechanical Properties of Polypropylene/Polyolefin Elastomer Blends[J]. China Plastics, 2004, 18(7):11-15.
[11] 陶红，周浩，薛振忠. PP非等温结晶动力学处理方法的研究[J].合成树脂及塑料，2006，23(4)：31-34.
[11] Tao Hong, ZHou Hao, Xue Zhenzhong. Approach of Non-Isothermal Crystallization Kinetics of Polypropylene[J]. China Syngthetic Resin and Plastics, 2006, 23(4):31-34.
[12] Tong Wu , Lei Yu ,Ya Cao, Feng Yang , Ming Xiang. Effect of Molecular Weight Distribution on Rheological, Crystallization and Mechanical Properties of Polyethylene-100Pipe Resins[J]. J Polym Res, 2013, 20:271-281.
[13] Leo Mandelkern. Crystallization Kinetics of Homopolymers: Overall Crystallization: A Review[J]. Biophysical Chemistry, 2004,112:109-116.

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