Wilson A D
J Biomed Mater Res. 1982 Sep;16(5):549-57. doi: 10.1002/jbm.820160503.
The matrix of a stoichiometric zinc polycarboxylate cement has been shown to be identical with zinc polycarboxylate salt, which consists principally of neutralized carboxylate, groups with a few free acid groups. When excess zinc oxide is present, as in practical cements, there are no free acid groups present. There is no evidence for the formation of a chelate. Both salt and cement matrices are amorphous. The formation of the salt appears to control time-dependent changes in the consistency of the cement pastes.
化学计量的聚羧酸锌水门汀的基质已被证明与聚羧酸锌盐相同，聚羧酸锌盐主要由中和的羧酸根基团和少量游离酸基团组成。当存在过量的氧化锌时，如在实际的水门汀中，不存在游离酸基团。没有证据表明形成了螯合物。盐和水门汀基质都是无定形的。盐的形成似乎控制了水门汀糊剂稠度随时间的变化。
