Encapsulation of poly(N-isopropyl acrylamide) in silica: A stimuli-responsive porous hybrid material that incorporates molecular nano-valves

Authors
Rao, GV Lopez, GP
Citation
Gv. Rao et Gp. Lopez, Encapsulation of poly(N-isopropyl acrylamide) in silica: A stimuli-responsive porous hybrid material that incorporates molecular nano-valves, ADVAN MATER, 12(22), 2000, pp. 1692
Citations number
23
Categorie Soggetti
Multidisciplinary,"Material Science & Engineering
Journal title
ADVANCED MATERIALS
ISSN journal
09359648 → ACNP
Volume
12
Issue
22
Year of publication
2000
Database
ISI
SICI code
0935-9648(20001116)12:22<1692:EOPAIS>2.0.ZU;2-G
Abstract
Incorporation of a smart polymer into a silica matrix can lead to smart mem branes, it is demonstrated here. Polymer-silica membranes were supported on porous centrifugal filters (see Figure), the encapsulated polymer molecule s acting as "nano-valves". Permeation experiments with aqueous solutions of poly (ethylene glycol) show that the membranes function as thermally switc hable molecular filters.