| Literature DB >> 16602755 |
L J Milton Gaspar1, Geetha Baskar.
Abstract
The approach of employing N-glycinylmaleamic acid (NGMA) as an efficient cosurfactant to provide microemulsion polymerization of butyl acrylate using a weight ratio of sodium dodecyl sulfate (SDS)/butyl acrylate (BA) at <or=1.5, which is lower than that employed in previous experiments, has been demonstrated. The narrow polydispersity index at 1.36-1.48 of poly(butyl acrylate) copolymers from investigated microemulsion polymerization reactions evidences the promotion of a controlled polymerization reaction, in contrast to the solution polymerization method generating polymers with higher polydispersity index at 3.15-4.23. The enhanced incorporation of NGMA at approximately 0.35 m in the copolymer demonstrates the merits of the proximity effect enabled in the microemulsion polymerization reaction. The incorporation of NGMA promotes rigidity of the polymer chain as suggested by a higher Tg of -16.8 degrees C for the copolymer in comparison to that of the poly(butyl acrylate) homopolymer.Entities:
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Year: 2006 PMID: 16602755 DOI: 10.1021/bm050918o
Source DB: PubMed Journal: Biomacromolecules ISSN: 1525-7797 Impact factor: 6.988