天津工业大学学报2017，Vol.36Issue(1)：41-47,7.DOI:10.3969/j.issn.1671-024x.2017.01.008
温度敏感型复合结构Janus粒子的制备及自驱动微马达的构建
Preparation of a thermosensitive Janus particle with composite structure and construction of autonomous motor
摘要
Abstract
In order to construct an autonomous micromotor with self-driven movement, a thermosensitive Janus particle P ( MAA-co-DVB )@Pt@PNIPAM was synthesized by the combination of vacuum sputtering and chemical polymerization. By virtue of the property of fast decomposition of H2O2 catalyzed by the asymmetrically distributed Pt, this particle can be used to build an autonomous micromotor by adding H2O2 aqueous solution as the fuel. This micromotor can realize a self-driven movement in the particular liquid. Herein, the catalytically active Pt was covered by the thermosensitive PNIPAM shell, which affected the movement of autonomous motors by altering the system temperature. Furthermore, Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and transmission electron microscope(TEM) were performed to determine the morphology and chemical composition of the synthesized Janus particle. Meanwhile, the movement of the autonomous micromotor was in situ observed by the optical microscopy in the hot and cold stages. It is obvious that the Janus particles moved in one direction when the H2O2 was added into the system, and the velocity of the Janus particles became much smaller when the temperature increased from 25℃to 40℃in 10%H2O2 aqueous solution.关键词
Janus粒子/自驱动微马达/蒸馏沉淀聚合/温度敏感Key words
Janus particles/autonomous micromotors/distillation-precipitation polymerization/thermosensitive分类
化学化工引用本文复制引用
刘巍,李可,陈一兮,黄小雨,魏俊富..温度敏感型复合结构Janus粒子的制备及自驱动微马达的构建[J].天津工业大学学报,2017,36(1):41-47,7.基金项目
国家自然科学基金资助项目(21504063) （21504063）
天津市科技计划项目(15PTSYJC00230) （15PTSYJC00230）
