2018 Volume 46 Issue 5 Pages 233-237
Poly(vinyl alcohol) (PVA) hydrogels were prepared by the repeated freezing and thawing cycles, and creep behavior of the gels was examined. In the gel preparation, the salt K2CO3 was introduced to obtain the clear gel structure. By the creep we also prepared the condensed PVA gels with unidirectional structure. The mechanical anisotropy was observed for the unidirectional gel.