Multitemperature Responsive Self‐Folding Soft Biomimetic Structures,Macromolecular Rapid Communications

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Multitemperature Responsive Self‐Folding Soft Biomimetic Structures
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2017-12-18 , DOI: 10.1002/marc.201700692
Kunihiko Kobayashi _{1,

2} , Seung Hyun Oh ₁ , ChangKyu Yoon ₃ , David H. Gracias _{1,

3}

Affiliation

Untethered, millimeter‐scale, stimuli‐responsive shape change structures are critical to the function of autonomous devices, smart materials, and soft robotics. Temperature in a range compatible with physiological or ambient environmental conditions is an excellent cue to trigger actuation of soft structures for practical biomimetic applications. Previously, a range of thermally responsive self‐folding soft structures has been described and utilized in a variety of applications from tissue engineering to minimally invasive surgery. In order to extend these concepts to more complex devices, thermally responsive bilayer structures composed of poly[oligo (ethylene glycol) methyl ether methacrylate] (POEGMA) gels that swell at three different temperatures are described. The lower critical solution temperature and volume transition temperature of POEGMA are tuned by varying the side chain length and the extent of copolymerization. The swelling properties of the POEGMA gels are characterized and a multilayer photopatterning process is described that is used to create soft biomimetic structures that change shape in a sequential manner while displaying multistate behaviors.

中文翻译：

多温响应自折叠软仿生结构

不受约束的毫米级，刺激响应的形状变化结构对于自主设备，智能材料和软机器人的功能至关重要。与生理或周围环境条件相适应的温度范围是触发仿生应用中的软结构致动的极佳线索。以前，已经描述了一系列热响应自折叠软结构，并将其用于从组织工程到微创手术的各种应用中。为了将这些概念扩展到更复杂的设备，描述了由在三个不同温度下溶胀的聚[低聚（乙二醇）甲基醚甲基丙烯酸甲酯]（POEGMA）凝胶组成的热响应双层结构。通过改变侧链长度和共聚程度，可以调节POEGMA的较低临界溶液温度和体积转变温度。表征了POEGMA凝胶的溶胀特性，并描述了一种多层光图案化工艺，该工艺用于创建柔软的仿生结构，该结构在显示多态行为的同时以连续的方式改变形状。

更新日期：2017-12-18

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