Correlation Between Physicomechanical and Swelling Properties of Weakly Basic Copolymer Hydrogels Based on (Meth)acrylate Polycations as New Smart Materials


Celik T., Orakdöğen N.

MACROMOLECULAR CHEMISTRY AND PHYSICS, vol.216, no.22, pp.2190-2201, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 216 Issue: 22
  • Publication Date: 2015
  • Doi Number: 10.1002/macp.201500230
  • Title of Journal : MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Page Numbers: pp.2190-2201

Abstract

2-Hydroxyethyl methacrylate (HEMA) is incorporated to N,N-dimethylaminoethyl methacrylate (DMAEMA) fabricating a series of stimuli-responsive copolymer hydrogels by free radical copolymerization. The increasing comonomer content via adding more HEMA results in a higher network density and, therefore, a lower equilibrium swelling ratio. The uniaxial compressive testing results showed that increasing HEMA in the feed improved the mechanical strength of P(DMAEMA-co-HEMA) hydrogels. As HEMA increased, the elastic modulus as well as the effective crosslinked chain density increased. The work strives to provide method to tune mechanical and physical properties for weakly basic copolymer hydrogels based on (meth) acrylate polycations, which is hopefully to guide the design of hydrogels with desirable properties.