𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation of Polystyrene-Poly(N-isopropylacrylamide) (PS-PNIPA) Core-Shell Particles by Photoemulsion Polymerization

✍ Scribed by Yan Lu; Alexander Wittemann; Matthias Ballauff; Markus Drechsler

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
203 KB
Volume
27
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Summary: Monodisperse thermosensitive PS‐NIPA core‐shell particles composed of a PS core and a cross‐linked PNIPA shell can be successfully synthesized by a novel method: photoemulsion polymerization. Cryo‐TEM images indicate clearly the core‐shell morphology of the PS‐NIPA particles: A homogeneous regular PNIPA shell has been affixed on the spherical PS core. DLS measurements indicate that the obtained PS‐NIPA latex particles are thermosensitive. The shell of PNIPA networks with different cross‐linking densities can shrink and re‐swell with temperature and the volume transition temperature is around 32 °C in all cases.

Cryo‐TEM image of PS‐NIPA core‐shell particles.

magnified imageCryo‐TEM image of PS‐NIPA core‐shell particles.

📜 SIMILAR VOLUMES

Preparation of polystyrene/poly(methyl m
Preparation of polystyrene/poly(methyl methacrylate) core-shell composite particles by suspension-emulsion combined polymerization
✍ Zhang Zhenqian; Bao Yongzhong; Huang Zhiming; Weng Zhixue 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 607 KB

## Abstract Suspension‐emulsion combined polymerization process, in which methyl methacrylate (MMA) emulsion polymerization constituents (EPC) were drop wise added to styrene (St) suspension polymerization system, was applied to prepare polystyrene/poly(methyl methacrylate) (PS/PMMA) composite part