Simultaneous Enhancement of Toughness and Strength of Stretched <italic style="font-style: italic">i</italic>PP Film <italic style="font-style: italic">via</italic> Tiny Amount of <italic style="font-style: italic">β</italic>-Nucleating Agent under “Shear-free” Melt-extrusion

Zhong-Zhu Liu; Guo-Qiang Zheng; Hong-Hui Shi; Chun-Tai Liu; Li-Wei Mi; Qian Li; Xian-Hu Liu

doi:10.1007/s10118-021-2589-9

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Simultaneous Enhancement of Toughness and Strength of Stretched iPP Film via Tiny Amount of β-Nucleating Agent under “Shear-free” Melt-extrusion

ARTICLE | Updated：2021-06-24

- Simultaneous Enhancement of Toughness and Strength of Stretched iPP Film via Tiny Amount of β-Nucleating Agent under “Shear-free” Melt-extrusion
- Chinese Journal of Polymer Science Vol. 39, Issue 11, Pages: 1481-1488(2021)
- Affiliations：
  
  a.College of Material and Chemical Engineering, Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China
  b.College of Materials Science and Engineering, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
  c.National Center for International Joint Research of Micro-Nano Molding Technology, School of Mechanics & Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
- Author bio：
  
  mlwzzu@163.com (L.W.M.)
  xianhu.liu@zzu.edu.cn (X.H.L.)
- Funds：
- DOI：10.1007/s10118-021-2589-9
  CLC：
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Zhong-Zhu Liu, Guo-Qiang Zheng, Hong-Hui Shi, et al. Simultaneous Enhancement of Toughness and Strength of Stretched iPP Film via Tiny Amount of β-Nucleating Agent under “Shear-free” Melt-extrusion. [J]. Chinese Journal of Polymer Science 39(11):1481-1488(2021)
DOI：

Zhong-Zhu Liu, Guo-Qiang Zheng, Hong-Hui Shi, et al. Simultaneous Enhancement of Toughness and Strength of Stretched iPP Film via Tiny Amount of β-Nucleating Agent under “Shear-free” Melt-extrusion. [J]. Chinese Journal of Polymer Science 39(11):1481-1488(2021) DOI： 10.1007/s10118-021-2589-9.

摘要

Abstract

Herein, isotactic polypropylene films with small ,β,-nucleating agent content were fabricated ,via, a melt-extrusion-stretched technology with intended “shear-free” in barrel and die. Compared with neat films, the tensile strength, elongation at break and strain energy density at break of ,i,PP film with 0.05 wt% ,β,-nucleating agent are significantly improved by 13.8%, 39.6% and 90.6%, respectively, indicating the simultaneously enhanced toughness and strength. Additionally, the ,β,-crystal content gradually increases with increasing ,β,-NA content, while the relative total daughter content of ,α,- and ,β,-crystal exhibits opposite tendency. Moreover, nucleation and crystal growth induced by various ,β,-NA contents are different. This work proves an efficient strategy to enhance mechanical properties of isotactic polypropylene film ,via, controlling elongation flow and addition of appropriate ,β,-NA content.

关键词

Keywords

Melt-extrusionIsotactic polypropyleneβ-Nucleating agentCrystallizationMechanical properties

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Simultaneous Enhancement of Toughness and Strength of Stretched iPP Film via Tiny Amount of β-Nucleating Agent under “Shear-free” Melt-extrusion

DOI：10.1007/s10118-021-2589-9

摘要

Abstract

关键词

Keywords

references