The effect of the melt-drawing ratio on the microstructure and mechanical properties of poly(butylene succinate) cast films with row-nucleated lamellar structure
The effect of the melt-drawing ratio on the microstructure and mechanical properties of poly(butylene succinate) cast films with row-nucleated lamellar structure
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熔融拉伸比对行核层状结构聚丁二酸丁二醇酯流延膜微观结构和力学性能的影响
DOI：
10.1016/j.polymertesting.2021.107394
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发表时间：
2021-12
期刊：
影响因子：
5.1
通讯作者：
CaihongLei
中科院分区：
文献类型：
--
作者：
JiayiXie;LiangdongYin;YongshiWu;RuijieXu;CaihongLei
通过熔融拉伸法可以制备高性能的PBS膜。研究了熔融拉伸比（MDR）对PBS流延膜力学性能和微观结构的影响。弹性模量、拉伸应力和应变硬化随着MDR的增加而增加。当MDR为25-50时，晶体形态从变形球晶变为行形核片层结构。MDR后椎板的横向尺寸和方向性明显改善。当MDR在50-125范围内时，通过增加片层的横向尺寸和取向，行形核片层结构略有改善。在整个MDR范围内，移动的（MAF）和刚性（RAF）非晶组分和结晶相的组分分数和厚度几乎不变。横向尺寸和取向的增加改善了膜的机械性能。值得注意的是，在MDR从50到125的弹性模量和取向之间的线性关系表明，弹性模量由具有行成核层的PBS流延膜中的晶体取向决定。本工作评价了取向对PBS薄膜的微观结构和性能的重要性，这可能指导高性能PBS薄膜的加工。
High-performance PBS films can be prepared by the melt-stretching method. The effect of the melt-drawing ratio (MDR) on the mechanical properties and microstructure of PBS cast films prepared by melt-stretching is studied in this paper. The elastic modulus, tensile stress, and strain hardening increase with increasing MDR. With an MDR of 25–50, the crystalline morphology changes from deformed spherulites to row-nucleated lamellar structure. The lateral size and orientation of the lamellae apparently improve with the MDR. When the MDR is within 50–125, the row-nucleated lamellar structure improves slightly by increasing the lateral size and orientation of the lamellae. The component fraction and thickness of the mobile (MAF) and rigid (RAF) amorphous fractions and crystalline phase are nearly unchanged within the whole MDR range. The increases in lateral size and orientation improve the mechanical properties of the films. Significantly, the linear relationship between the elastic modulus and orientation at MDRs from 50 to 125 indicates that the elastic modulus is determined by the crystal orientation in PBS cast films with row-nucleated lamellae. This work evaluates the importance of orientation for microstructure and properties of PBS films, which may guide the processing of high-performance PBS films.
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影响因子：
3.2
作者：
F. Sadeghi;A. Ajji;P. Carreau
通讯作者：
F. Sadeghi;A. Ajji;P. Carreau
影响因子：
2.4
作者：
Sang-Kyun Lim;S. Jang;S. Lee;K. Lee;I. Chin
通讯作者：
Sang-Kyun Lim;S. Jang;S. Lee;K. Lee;I. Chin
影响因子：
4.6
作者：
T. Hashimoto;Kikuo Nagatoshi;A. Todo;H. Kawai
通讯作者：
T. Hashimoto;Kikuo Nagatoshi;A. Todo;H. Kawai
影响因子：
4.3
作者：
T. Jin;Mi Zhou;Shao-dong Hu;Feng Chen;Q. Fu;Yi Fu
通讯作者：
T. Jin;Mi Zhou;Shao-dong Hu;Feng Chen;Q. Fu;Yi Fu
影响因子：
4.6
作者：
L. Tan;Yiwang Chen;Weihua Zhou;Suwen Ye;Junchao Wei
通讯作者：
L. Tan;Yiwang Chen;Weihua Zhou;Suwen Ye;Junchao Wei