Preparation of hydrophilic/hydrophobic porous materials.
A novel porous material was designed and prepared in this work. A hydrophobic open-celled porous polystyrene (PS) was first synthesized via a concentrated emulsion polymerization of water in styrene. Subsequently the porous polystyrene was saturated with an aqueous solution of acrylamide (AM) and an initiator, which was subjected to another polymerization and the resulted polyacrylamide (PAM) penetrated in the cells and intercellular pores of the PS matrix. The PAM would change its volume according to the environmental humidity and thus adjusted the permeation of the material. The morphology, pore size distributions, water absorption, and vapor permeation of the materials were investigated.
Li
Xuan
X
The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, PR China.
Zhang
Chen
C
Du
Zhongjie
Z
Li
Hangquan
H
D000042:Absorption; D020106:Acrylamide / Q000737:chemistry*; D000180:Acrylic Resins / Q000737:chemistry*; D004867:Equipment Design; D006813:Humidity; D008422:Materials Testing; D008628:Mercury / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011137:Polystyrenes / Q000737:chemistry*; D016062:Porosity; D020058:Styrene / Q000737:chemistry; D014867:Water / Q000737:chemistry*; D000099166:Polyacrylamides
D020106:Acrylamide; D000180:Acrylic Resins; D008628:Mercury; D011137:Polystyrenes; D020058:Styrene; D014867:Water; D000099166:Polyacrylamides