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Miscibility of Carboxy-Terminated Polystyrene/Poly[2-(N,N-dimethylamino)ethyl methacrylate] Blends

✍ Scribed by Shimon Tanaka; Haruo Nishida; Takeshi Endo

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
434 KB
Volume
212
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

The miscibility/immiscibility behavior of CPS/PDMAEMA binary blends were investigated by means of DSC and optical microscopy. CPS was prepared by RAFT polymerization. CPS in a molecular weight range of 5 200–14 400 g · mol^−1^ was found to be miscible with PDMAEMA as shown by the existence of a single glass transition, whereas benzyl‐terminated polystyrene with a similar molecular weight was immiscible with PDMAEMA. DSC results suggested that the carboxylic acid terminal groups effectively operated as miscibility enhancers in polystyrene/PDMAEMA blends. Moreover, it was observed that this effect depended on the molecular weight of CPS and the hydrogen bonding function of solvents. magnified image

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