کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5186385 | 1381103 | 2007 | 11 صفحه PDF | دانلود رایگان |
Amphiphilic block copolymers consisting of two poly(acrylamide) derivative blocks have been synthesized via the reversible addition fragmentation chain transfer (RAFT) polymerization process with a hydrophobic block, poly(N-tert-butyl acrylamide), poly(TBAm), and a non-ionic hydrophilic one, poly(N-acryloylmorpholine), poly(NAM). Both polymerization orders, poly(TBAm-b-NAM) and poly(NAM-b-TBAm), were compared in terms of conversion and control over molecular weights (MW). Purification of the block copolymers was carried out via several methods in order to optimize their subsequent characterization. 1H NMR analysis resulted in an accurate determination of the second block MWÂ whereas determination of the CMC by the pendant drop method confirmed the ability of the poly(TBAm-b-NAM) block copolymers to self-assemble into micelles in aqueous phase.
Journal: Polymer - Volume 48, Issue 2, 12 January 2007, Pages 437-447