Synthesis and polymerization kinetics of acrylamide phosphonic acids and esters as new dentine adhesives
作者:V. Besse、L. Le Pluart、W. D. Cook、T.-N. Pham、P.-J. Madec
DOI:10.1002/pola.26339
日期:2013.1.1
or due to the phosphonic acid group per se, or is applicable only with a crosslinking reaction, we have synthesized several acrylamide and methacrylate monomers bearing phosphonic acid or phosphonate moieties and studied their photopolymerization kinetics. The acrylamide phosphonic acid was found to accelerate the polymerization rate but similar monomers bearing a phosphonate ester group had a much
在修复牙科方面,已证明带有膦酸部分的丙烯酰胺单体可用于配制牙科自蚀胶,因为它们可增强与羟磷灰石的粘合力,并且不易水解,因此有可能提高其胶粘剂的耐久性。先前的研究表明,膦酸丙烯酰胺可提高二丙烯酰胺单体的光聚合速率。了解该速率加速是特定于单体的丙烯酰胺功能还是由于膦酸酯基本身,或者仅适用于交联反应,我们合成了几种带有膦酸或膦酸酯部分的丙烯酰胺和甲基丙烯酸酯单体,并研究了它们的光聚合动力学。发现丙烯酰胺膦酸可加速聚合速率,但是带有膦酸酯基团的类似单体的效果要小得多。当膦酸基单体与单官能丙烯酰胺单体共聚时,观察到类似的促进作用,但速率加速可能与交联过程有关。当聚合介质中存在不可聚合的有机膦酸时,也观察到该速率效应。我们建议,介质极性的增加是造成这种速率增强效应的原因。