Programming of Shape Memory Natural Rubber for Near-Discrete Shape Transitions

被引：41

作者：

Quitmann, Dominik ^{[1
]}

Reinders, Frauke M. ^{[1
]}

Heuwers, Benjamin ^{[1
]}

Katzenberg, Frank ^{[1
]}

Tiller, Joerg C. ^{[1
]}

机构：

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

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 03期

关键词：

narrow shape-transition; SMNR; shape memor; cold-programming; aging; POLYMER NETWORKS; STRESS-RELAXATION; CRYSTALS; POLYETHYLENE; TEMPERATURE; BEHAVIOR; STRAIN;

D O I：

10.1021/am507184c

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Typical shape memory polymers are hot-programmed and show a shape transition over a broad temperature range of 10 K and more. Cold-programmed shape memory natural rubber (SMNR) recovers more than 80% of its original shape within 1 K. The trigger point can be increased upon aging the stretched SMNR over several weeks without losing the narrow trigger range. This process can be accelerated by treatment of the stretched SMNR with nonaffine solvent vapors. Affine solvent vapors of low concentrations afford higher trigger points than that achieved by aging. This way, even higher cross-linked natural rubber can be cold-programmed.

引用

页码：1486 / 1490

页数：5

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