Preparation of Soft Microactuators in a Continuous Flow Synthesis Using a Liquid-Crystalline Polymer Crosslinker

被引：17

作者：

Fleischmann, Eva-Kristina ^{[1
]}

Ohm, Christian ^{[1
]}

Serra, Christophe ^{[2
]}

Zentel, Rudolf ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany

[2] Univ Strasbourg, Ecole Chim Polymeres & Mat, Grp Intensificat & Intrapolat Proc Polymeres, Lab Ingn Polymeres Hautes Technol,EAc CNRS 4379, F-67087 Strasbourg 2, France

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2012年 / 213卷 / 18期

关键词：

crosslinking; liquid crystalline elastomers; microfluidics; reversible addition-fragmentation chain transfer; stimuli-sensitive polymers; FRAGMENTATION CHAIN TRANSFER; FREE-RADICAL POLYMERIZATION; MICROMETER-SIZED ACTUATORS; INTERFACIAL-TENSION; MICROFLUIDIC SYNTHESIS; RAFT PROCESS; ELASTOMERS; PARTICLES; PROFILE; MUSCLE;

D O I：

10.1002/macp.201200276

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We present the synthesis of a polymeric liquid crystalline (LC) crosslinker and its usage in the preparation of soft microactuators. The microactuators, composed of thermoresponsive liquid crystalline elastomers (LCE), are fabricated in a microfluidic device in a continuous on the fly process. The LC polymer crosslinker is miscible with the LC monomer and provides for a rapid polymerization and crosslinking. Most importantly, it promotes an enantiotropic mesophase of the mobile monomer phase, which is not provided by conventional nonmesogenic crosslinkers. This allows an isothermal handling inside the microfluidic setup. Temperature-driven shape changes up to 65% could be achieved by judiciously optimizing the crosslinking density of the LCE particles.

引用

页码：1871 / 1878

页数：8

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