Light-Stimulated Permanent Shape Reconfiguration in Cross-Linked Polymer Microparticles.

Light-Stimulated Permanent Shape Reconfiguration in Cross-Linked Polymer Microparticles.
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在交联聚合物微粒中轻刺激的永久性重新配置。

DOI:
10.1021/acsami.7b02759
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发表时间:
2017-04-26
影响因子:
9.5
通讯作者:
Ding Y
Ding Y
中科院分区:
材料科学2区
文献类型:
--
作者:
Cox LM;Sun X;Wang C;Sowan N;Killgore JP;Long R;Wu HA;Bowman CN;Ding Y

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由于这些材料不能塑性变形,重新配置弹性体微粒的永久形状是不可能的。为了解决这一限制,我们合成了第一个包含共价自适应网络(CAN)的微粒。CAN是交联的聚合物网络,能够重新配置其网络拓扑结构,使应力松弛和形状变化的行为,可逆加成-断裂链转移(RAFT)是在这项工作中使用的相应的动态化学,使CAN为基础的微粒。使用纳米压印光刻应用可控的变形,我们证明,在光刺激微粒能够重新配置其形状永久固定大的纵横比和纳米级的表面形貌。
Reconfiguring the permanent shape of elastomeric microparticles has been impossible due to the incapability of plastic deformation in these materials. To address this limitation, we synthesize the first instance of microparticles comprising a covalent adaptable network (CAN). CANs are cross-linked polymer networks capable of reconfiguring their network topology, enabling stress relaxation and shape changing behaviors, and reversible addition–fragmentation chain transfer (RAFT) is the corresponding dynamic chemistry used in this work to enable CAN-based microparticles. Using nanoimprint lithography to apply controllable deformations we demonstrate that upon light stimulation microparticles are able to reconfigure their shape to permanently fix large aspect ratios and nanoscale surface topographies.
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发表时间: 2016-07-05
影响因子: 4.9
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