Rigid rod water-soluble polymers

Autor: L. D. Kershner, N. Sarkar
Rok vydání: 1996
Předmět:
Zdroj: Journal of Applied Polymer Science. 62:393-408
ISSN: 1097-4628
0021-8995
DOI: 10.1002/(sici)1097-4628(19961010)62:2<393::aid-app14>3.0.co;2-2
Popis: For many applications such as enhanced oil recovery, it is essential to have an extremely water soluble shear stable polymer that can impart high viscosity at very low concentration for economic reasons. It is known that rigid rod polymers can deliver high viscosity at low molecular weight compared with the traditionally used flexible chain polymers such a hydrolyzed polyacrylamides. Polymers with helical or double stranded conformations may be considered as truly rigid rod in solution. New sulfonated water soluble aromatic polyamides, polyureas, and polyimides were prepared via interfacial or solution polymerization of sulfonated aromatic diamines with aromatic dianhydrides, diacid chlorides, or phosgene. Some of these polymers had sufficiently high molecular weight (
Databáze: OpenAIRE
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