Synthesis and Characterization of Block Copolymers from Poly(p-benzamide) and Poly(propylene glycol)
Block copolymers containing a rigid poly(p‐benzamide) and a flexible poly(propylene glycol) segment were synthesized by coupling aniline terminated poly(p‐benzamide) with either poly(propylene glycol) or poly‐(propylene glycol) monobutyl ether activated with terminal p‐(chlorocarbonyl)benzoyl end‐gr...
Saved in:
Published in | Macromolecular chemistry and physics Vol. 202; no. 7; pp. 1053 - 1059 |
---|---|
Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag GmbH
01.04.2001
WILEY‐VCH Verlag GmbH Wiley |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Block copolymers containing a rigid poly(p‐benzamide) and a flexible poly(propylene glycol) segment were synthesized by coupling aniline terminated poly(p‐benzamide) with either poly(propylene glycol) or poly‐(propylene glycol) monobutyl ether activated with terminal p‐(chlorocarbonyl)benzoyl end‐groups. These coupling reactions were carried out at temperatures between –22°C and 40°C, with various feed reagent ratios. To eliminate the low molecular weight fractions of homopolymers and copolymers, a solubility criterion at constant temperature was used. At 30°C it is possible separate a soluble and insoluble fraction in DMAc. The molecular weight of the soluble fractions ranged between 9 300 and 13 100 g/mol. All the copolymers were characterized by FT‐IR spectroscopy, thermal analysis, and viscosity. |
---|---|
Bibliography: | istex:78DF533F0F49211E75321239914CE6490EC50297 ArticleID:MACP1053 ark:/67375/WNG-WQLDT4CF-H |
ISSN: | 1022-1352 1521-3935 |
DOI: | 10.1002/1521-3935(20010401)202:7<1053::AID-MACP1053>3.0.CO;2-X |