Rheological and Swelling Behaviors of the Polyacrylamide / Poly (vinyl alcohol) Semi-Interpenetrating Polymer Network Hydrogels

Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

NICEC12_447

تاریخ نمایه سازی: 30 شهریور 1387

Abstract:

Preparation and characterization of novel semi-interpenetrating polymer network (semi-IPN) hydrogels based on partially hydrolyzed polyacrylamide and poly (vinyl alcohol) (PVA) were described. Effects of PVA content on the viscoelastic properties and swelling behavior in tap water and different electrolyte solutions were investigated. Study of the gelation behavior using dynamic rheometery showed that the limiting storage modulus of the semi-IPN gels decreased with increasing PVA content. It was also found that increasing the PVA content increases the loss factor, indicating that the viscous properties of this gelling system increase more strongly than the elastic properties. The swelling ratio of the semi-IPN gels in tap water decreased as the concentration of the PVA increased. However, the semi-IPN gels showed lower salt sensitivity factor in synthetic oil reservoir water as compared with HPAM gels.

Authors

Jamal Aalaie

aChemical Engineering Department, Tarbiat Modares University

Ebrahim Vasheghani-Farahani

aChemical Engineering Department, Tarbiat Modares University

Ali Rahmatpour

Polymer Science and Technology Division, Research Institute of Petroleum Industry

Mohammad Ali Semsarzadeh

Chemical Engineering Department, Tarbiat Modares University