An Investigation into the Influence of Crosslinker Type and Solvent Composition on Physical Properties and Phase Transition Behavior of Poly(N-isopropylacrylamide) Hydrogels

Erbil C., Toz E., Akdemir O., Uyanık N.

4th Silicones and Silicone-Modified Materials Symposium, San-Francisco, Costa Rica, 10 - 14 September 2006, vol.1051, pp.167-180 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 1051
  • Doi Number: 10.1021/bk-2010-1051.ch014
  • City: San-Francisco
  • Country: Costa Rica
  • Page Numbers: pp.167-180
  • Istanbul Technical University Affiliated: Yes

Abstract

Poly(N-isopropylacrylamide) (PNIPAAm) hydrogels have been synthesized by free radical polymerization in 1,4-Dioxane using N,N'-methylenebisacrylamide (BIS) and alpha,omega-acryloxyorganofunctional poly(dimethylsiloxane) (VTPDMS) as crosslinkers. The disc samples equilibrated by swelling in water, water-methanol mixtures and methanol were examined by volumetric and stress-compression measurements to afford the values of swelling ratio (V/ V-o), polymer-solvent interaction parameter (chi), compression modulus (G) and effective crosslinking density (v(e)).