文献类型：期刊文献

英文题名：Continuous Two-Step Synthesis of PS@HMEM Core-Shell Nanoparticles via Emulsion Polymerization in Microreactors

作者：Zhang, Yuhua[1];Zhang, Ziyu[1];Tian, Yang[1];Fu, Zhinan[1];Hua, Chen[1];Li, Li[1];Zhao, Fang[1];Guo, Xuhong[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Xinjiang 832000, Peoples R China

年份：2023

卷号：62

期号：49

起止页码：21078

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20235015216716);WOS:【SCI-EXPANDED(收录号:WOS:001126761800001)】；

语种：英文

外文关键词：Chemical reactors - Dynamic light scattering - Electron spin resonance spectroscopy - Emulsification - Emulsion polymerization - Ethylene - Ethylene glycol - Fourier transform infrared spectroscopy - Paramagnetic resonance - Polyelectrolytes - Shells (structures) - Synthesis (chemical) - Transmission electron microscopy

摘要：Spherical polyelectrolyte brushes (SPBs) are widely applied in protein controllable adsorption, nanocatalysis, and surface modification, while the polystyrene (PS) nanoparticles covered with well-distributed photoinitiator 2-[p-(2-hydroxy-2-methylpropiopenone)]-ethylene glycol methacrylate (HMEM) shells (PS@HMEM) are of critical importance to synthesize SPBs by photoemulsion polymerization. In this paper, a two-step continuous flow strategy consisting of emulsion polymerization of PS nanoparticles and a coating of HMEM was rationally designed for the construction of PS@HMEM core-shell nanoparticles in a microreactor. The structure of PS@HMEM core-shell nanoparticles was characterized by Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), and transmission electron microscope (TEM). The electron paramagnetic resonance (EPR) technique was employed to estimate the grafted amount of HMEM, and it was verified that feeding through a single or two streams had a significant advantage for the optimization of the "starved condition." This work provided a new strategy for synthesizing PS@HMEM core-shell polymer nanoparticles and showed great potential for the construction of other functional nanoparticles.