The deformation behaviour of hydrogels of poly(vinyl alcohol) (PVA), agarose and kappa‐carrageenan was investigated and compared with each other. PVA gels prepared by periodically repeated freezing‐thawing cycles showed a much larger breaking force and breaking deformation than agarose and kappa‐carrageenan gels.
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Watase et al. (1985) studied this question.
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