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Synthesis and characterization of new dextran‐acrylamide gels
Author(s) -
Abdurrahmanoglu Suzan,
Firat Yurdun
Publication year - 2007
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.27023
Subject(s) - dextran , swelling , acrylamide , self healing hydrogels , monomer , polymer chemistry , network structure , materials science , elastic modulus , chemical engineering , chemistry , polymer , chromatography , composite material , machine learning , computer science , engineering
Dextran‐acrylamide gels were synthesized in a single step reaction by using 4,4′‐azobis(4‐cynovaleric acid) as bi‐functional initiator at 60°C. Corresponding acrylamide (AaM) gels in the absence of dextran were also prepared for comparison. Several parameters such as reaction period (6, 12, and 24 h), monomer and crosslinker concentrations were varied and their effects on the properties of gels were investigated. Gels were characterized by their mechanical and swelling behaviors and in terms of structural changes using SEM. It was observed that swelling degree decreased by increasing the monomer concentration due to formation of more crosslinking points that cause tighter network structure. Mechanical measurements showed that elastic modulus of AaM gels was higher than that of dextran‐AaM gel which indicating the importance of dextran concentration on the flexibility of the network. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007