Ionically Cross-Linked Shape Memory Polypropylene

被引：36

作者：

Raidt, Thomas ^{[1
]}

Hoeher, Robin ^{[1
]}

Meuris, Monika ^{[1
]}

Katzenberg, Frank ^{[1
]}

Tiller, Joerg C. ^{[1
]}

机构：

[1] TU Dortmund, Dept Biochem & Chem Engn, Biomat & Polymer Sci, D-44221 Dortmund, Germany

来源：

MACROMOLECULES | 2016年 / 49卷 / 18期

关键词：

STRAIN-INDUCED CRYSTALLIZATION; SYNDIOTACTIC POLYPROPYLENE; THERMOPLASTIC ELASTOMERS; CRYSTAL-STRUCTURE; STORAGE CAPACITY; NATURAL-RUBBER; FORM II; POLYMERS; BEHAVIOR; IONOMER;

D O I：

10.1021/acs.macromol.6b01387

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An ionically cross-linked syndiotactic polypropylene (ix-sPP) was synthesized by subsequent grafting of maleic anhydride (MA) to the polymer followed by compounding with ZnO. The polymer network was investigated by X-ray scattering, transmission electron microscopy, and various thermal and mechanical analyses. The optimized polymer network with 1 wt % MA grafting and 20 wt % ZnO exhibits a crystal melting temperature of 125 degrees C and rubber elastic behavior up to 203 degrees C and becomes a viscous polymer melt at higher temperatures. This process is fully reversible. Further, ix-sPP is an exceptionally stable ionic polymer network that matches the stability of the respective covalently cross-linked polymer in terms of shape memory properties. Additionally, the ionic cross-linking affords thermoplastic processability and shape memory assisted self-healing.

引用

页码：6918 / 6927

页数：10

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