Thermodynamic modeling for swelling of poly(n-isopropyl acrylamide) hydrogels in solvent mixtures

Sheik Tanveer, Fazle Hussain, Chau Chyun Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

• Deswelling occurs when ethanol mass fraction is within the range (0.1-0.5) in coexisting liquid phase. Model clearly captures this deswelling phenomena. • Swelling of N-isopropyl acrylamide hydrogel in aqueous ethanol solution is dominated by solvent-solvent interactions and solvent-segment interactions. • Excess Helmholtz energy of the hydrogel network is found insignificant compared to the excess Gibbs free energy of the gel. • Effective molar volume of the PNIPAAm polymer in hydrogel network is found half of the value use in linear PNIPAAm polymer.

Original languageEnglish (US)
Title of host publicationMaterials Engineering and Sciences Division 2017 - Core Programming Area at the 2017 AIChE Annual Meeting
PublisherAIChE
Pages697-707
Number of pages11
ISBN (Electronic)9781510857971
StatePublished - 2017
EventMaterials Engineering and Sciences Division 2017 - Core Programming Area at the 2017 AIChE Annual Meeting - Minneapolis, United States
Duration: Oct 29 2017Nov 3 2017

Publication series

NameMaterials Engineering and Sciences Division 2017 - Core Programming Area at the 2017 AIChE Annual Meeting
Volume2

Other

OtherMaterials Engineering and Sciences Division 2017 - Core Programming Area at the 2017 AIChE Annual Meeting
CountryUnited States
CityMinneapolis
Period10/29/1711/3/17

ASJC Scopus subject areas

  • Engineering(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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