光响应聚合物微纳米粒子的制备及其形状记忆功能的研究

项目名称： 光响应聚合物微纳米粒子的制备及其形状记忆功能的研究

项目编号： No.51503231

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 黄华华

作者单位： 中山大学

项目金额： 20万元

中文摘要： 刺激响应性聚合物粒子研究一直是智能材料和纳米材料交叉领域重要的研究方向，尤其近年研究发现非球形粒子具有独特的物理性能和生物行为，使得可形变智能粒子的研究更受重视。然而，已报道可形变聚合物粒子刺激方式多为传统直接加热，同时非球形纳米粒子的稳定性有待提高。因此，本项目拟基于光致型形状记忆高分子，利用膜拉伸微加工技术进行光响应聚合物粒子的制备研究。利用点击反应，将具有光可逆交联反应特性的官能团作为分子开关引入到聚合物网络来构筑光响应材料，由简单乳化法获得球形微纳米粒子，然后通过膜拉伸微加工，在光交联下制得形状和尺寸明确的非球形粒子；在此基础上，重点研究粒子的光致形状记忆功能包括临时形状的固定性和回复性，明确粒子记忆性能与其影响因素关系，从而实现聚合物粒子形状远程精确调控的目的。本项目研究为制备可形变智能粒子提供新设计思路，也有助于推动智能材料微纳米化的研究进程和纳米材料智能化的发展。

中文关键词： 聚合物微纳米粒子；刺激响应性；形状记忆功能；光可逆交联反应；微加工

英文摘要： Study on stimuli-responsive polymeric particles has been an important research direction in the interdisciplinary subjects of smart materials and nanomaterials. Especially, it has been found that non-spherical particles possess novel physical properties and biomedical behaviors, and thus development of shape-changing polymeric particles has been attracted more and more attention. However, most of reported polymeric particles change shape in response to directly heat, and in addition, the stability of non-spherical nanoparticles needs to be improved. Therefore, in this project, we propose to develop a kind of light-responsive polymeric micro-/nanoparticles through film stretching microfabrication, based on light-induced shape memory polymers. Firstly, photo-responsive groups that can undergo reversible crosslinking reaction will be introduced into polymeric elastic network via click reaction, to form light-induced materials, then micro-/nanoparticles will be obtained by simple emulsification, and finally, non-spherical particles will be prepared through film stretching microfabrication via suitable light irradiation. We will focus on studying light-induced shape-memory function of particles including their shape fixation and recovery properties, and the relationship between shape-memory effect and its influencing effect, to render remote controllability of the shapes of micro-/nanoparticles. The work being proposed in this project will provide a novel approach for design and preparation of smart polymeric particles. Besides, it will push forward development of miniaturization of smart materials and intelligence of nanomaterials.

英文关键词： Polymeric Micro-/Nanoparticles;Stimuli-Responsibility;Shape-Memory Function;Light Reversible Crosslinking Reaction;Microfabrication