成分对义齿组织调节剂凝胶化的影响。

Effect of composition on the gelation of tissue conditioners.

作者信息

Parker S, Braden M

机构信息

Department of Biomateials in Relation to Dentistry, London Hospital Medical College, UK.

出版信息

Biomaterials. 1996 Sep;17(18):1827-32. doi: 10.1016/0142-9612(95)00340-1.

DOI:10.1016/0142-9612(95)00340-1

PMID:8879523

Abstract

Tissue conditioners comprise poly(ethyl methacrylate) powder (or related copolymer) and a liquid containing a plasticizer and ethanol. Gelation times for two butyl/ethyl copolymers and one poly(ethyl methacrylate) polymer with buty phthalyl butyl glycollate or di-2-ethyl hexyl maleate and varying amounts of ethanol have been measured in the range 20-40 degrees C. The proprietary material "Viscogel" was used as a standard. Results were plotted according to the Arrhenius equation enabling activation energies to be determined. Values for activation energies ranged from 55 to 110 KJ mol-1 K-1. The 60/40 butyl/ethyl methacrylate copolymer gave the lowest values and those containing poly(ethyl methacrylate) the highest.

摘要

组织调理剂由聚甲基丙烯酸乙酯粉末（或相关共聚物）和含有增塑剂及乙醇的液体组成。已测定了两种丁基/乙基共聚物以及一种含丁基邻苯二甲酰丁基二醇酯或二-2-乙基己基马来酸酯和不同含量乙醇的聚甲基丙烯酸乙酯聚合物在20至40摄氏度范围内的凝胶化时间。专用材料“Viscogel”用作标准。根据阿伦尼乌斯方程绘制结果，从而能够确定活化能。活化能的值在55至110千焦每摩尔开尔文之间。60/40丁基/甲基丙烯酸乙酯共聚物的值最低，而含聚甲基丙烯酸乙酯的共聚物的值最高。