Preparation and Properties of Polyvinyl Alcohol (PVA)/Polyvinyl Pyrrolidone (PVP) Hydrogel

Abstract:

Polyvinyl alcohol (PVA)/polyvinyl pyrrolidone (PVP) hydrogel has been fabricated using freezing-thawing method. The tensile strengthen and swelling properties were tested. The results show that hydrogels mechanical properties are better, reach to about 0.7 MPa, 15% PVA/10% PVP hydrogel is the best, up to 0.82MPa; swelling properties are better, The loss water rate and swelling percentage of hydro gel have similar change trend in the room temperature; When the swelling equilibrium, 10% PVA hydrogel loss water rate is very rapid, the swelling percentage of 15% PVA hydrogel is relatively rapid; The rate of loss water of all hydrogels are more than 70 percent, 10% PVA/3% PVP hydrogel loss water is the fastest, the loss rate is up to 90%; swelling percentage of all hydrogels are over 400%, 15%PVA/8% PVP hydrogel is the highest, close to 600%.

• Periodical: Applied Mechanics and Materials (Volumes 84-85)
• Pages: 485-488
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.84-85.485
• Online since: August 2011
• Authors: Shu Di Zhang, Yu Chun Zhai, Zhen Fang Zhang
• Keywords: Hydrogel, Mechanical Property, PVA, PVP, Swelling

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