With polyvinyl alcohol (PVA)and acrylamide (AM)as raw material,PVA/PAM hybrid double-network hydrogel was synthesized by one-pot two-step polymerization method combined UV irradiation and freezing-thawing technology. We tested and analyzed the mechanical property, swelling property,water loss property and self-healing property of hydrogels.The results show that PVA/PAM hybrid double-network hydrogel has high mechanical strength,its tensile strength is 428 kPa,the water loss rate is slower than the single network hydrogel.The hybrid double-network hydrogel possesses self-healing property.%以聚乙烯醇(polyvinyl alcohol,PVA)和丙烯酰胺(acrylamide,AM)为原料,采用“一锅煮”及紫外辐照结合冷冻-解冻两步聚合法制备聚乙烯醇/聚丙烯酰胺(PVA/PAM)混杂双网络水凝胶,并对水凝胶的力学性能、溶胀性能、失水性能以及自愈合性进行测试和分析。结果表明,PVA/PAM 混杂双网络水凝胶具有较高的力学强度,其拉伸强度为428 kPa,失水速率和单网络水凝胶相比较慢,具有一定的自愈合性。
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