通过表面引发原子转移自由基聚合和紫外光交联技术的组合，轻松制备交联聚合物纳米胶囊。

Facile Preparation of Crosslinked Polymeric Nanocapsules via Combination of Surface-Initiated Atom Transfer Radical Polymerization and Ultraviolet Irradiated Crosslinking Techniques.

机构信息

State Key Laboratory of Applied Organic Chemistry and Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 People's Republic of China.

出版信息

Nanoscale Res Lett. 2009 May 6;4(7):773-7. doi: 10.1007/s11671-009-9311-0.

DOI:10.1007/s11671-009-9311-0

PMID:20596491

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2893612/

Abstract

A facile approach for the preparation of crosslinked polymeric nanocapsules was developed by the combination of the surface-initiated atom transfer radical polymerization and ultraviolet irradiation crosslinking techniques. The well-defined polystyrene grafted silica nanoparticles were prepared via the SI-ATRP of styrene from functionalized silica nanoparticles. Then the grafted polystyrene chains were crosslinked with ultraviolet irradiation. The cross-linked polystyrene nanocapsules with diameter of 20-50 nm were achieved after the etching of the silica nanoparticle templates with hydrofluoric acid. The strategy developed was confirmed with Fourier transform infrared, thermogravimetric analysis, and transmission electron microscopy.

摘要

通过表面引发原子转移自由基聚合和紫外光交联技术的结合，开发了一种制备交联聚合物纳米胶囊的简便方法。通过从功能化的硅纳米粒子上引发苯乙烯的 SI-ATRP，制备了具有明确结构的聚苯乙烯接枝硅纳米粒子。然后，通过紫外光交联接枝的聚苯乙烯链。用氢氟酸刻蚀硅纳米粒子模板后，得到直径为 20-50nm 的交联聚苯乙烯纳米胶囊。该策略通过傅里叶变换红外光谱、热重分析和透射电子显微镜得到了证实。