...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Characterization of new acrylic bone cement based on methyl methacrylate/1-hydroxypropyl methacrylate monomer.
【24h】

Characterization of new acrylic bone cement based on methyl methacrylate/1-hydroxypropyl methacrylate monomer.

机译：基于甲基丙烯酸甲酯/ 1-甲基丙烯酸羟丙酯单体的新型丙烯酸骨水泥的表征。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

New formulations of acrylic bone cement based on methyl methacrylate/1-hydroxypropyl methacrylate (MMA/HPMA) monomers were developed with the purpose of obtaining more ductile materials with reduced polymerization shrinkage. In this way, the ductility of such materials increased, but the introduction of high percentages of the hydrophilic component produced an important decrease in Young's modulus and strength. To ascertain the reason for the deterioration of the tensile parameters, an analysis by scanning electron microscopy of these formulations was carried out; it revealed poor adhesion between the matrix and poly(MMA) beads. We also observed that the polymerization shrinkage increased as the amount of hydrophilic monomer in the formulation decreased, and the 50% (v/v) HPMA modified bone cement compensated for this volume reduction with its water uptake swelling. Measurements taken on the setting time and polymerization exotherm showed a decrease in the former and an increase in the latter, because of the introduction of a more reactive monomer in the bone cement formulation. Copyright 1999 John Wiley & Sons, Inc.
机译：基于甲基丙烯酸甲酯/ 1-甲基丙烯酸羟丙酯（MMA / HPMA）单体的丙烯酸骨水泥的新配方被开发出来，目的是获得更多可延展的材料，同时降低聚合收缩率。以这种方式，此类材料的延展性增加，但是高百分比的亲水性组分的引入导致杨氏模量和强度的显着降低。为了确定拉伸参数劣化的原因，通过扫描电子显微镜对这些制剂进行了分析;结果示于表1中。它表明基质和聚（MMA）珠之间的粘附性很差。我们还观察到，随着配方中亲水性单体的减少，聚合收缩率增加，并且50％（v / v）HPMA改性骨水泥通过吸水膨胀补偿了这种体积减少。由于在骨水泥配方中引入了更具反应性的单体，因此对凝固时间和聚合放热的测量显示前者减少而后者增加。版权所有1999 John Wiley＆Sons，Inc.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号