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Synthesis and characterization of low‐molecular‐weight polyacrolein
Author(s) -
Marques Maria de Fátima Vieira,
Pinto Patricia Reis,
de Andrade Cristina Tristão,
Michel Ricardo Cunha
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29533
Subject(s) - monomer , molar mass distribution , polymer chemistry , chemistry , molar mass , polymer , solvent , polymerization , chain transfer , acrolein , aldehyde , fourier transform infrared spectroscopy , molecular mass , radical polymerization , organic chemistry , chemical engineering , engineering , catalysis , enzyme
Acrolein was polymerized in a polar solvent in the presence of terc ‐ and sec ‐butyl lithium as initiators. Using a low monomer to initiator molar ratio and 1‐h reaction time, cyclic structures were shown to be formed in the main chain of the resulting oligomers. The influence of different monomer to initiator molar ratios on molecular weight and on molecular weight distribution was investigated. Chain‐transfer reactions toward the monomer resulted in lower molecular weights and narrower polydispersions as [M]/[I] increased. The influence of initiator type on the polymer molecular weight was also evaluated. FTIR analysis of the degradation products at different heating temperatures indicated that the oligomers structure is composed of aldehyde, ether, and vinyl functional groups. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009