• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>journal of applied polymer science >Determination of PEG concentration in its aqueous solution using differential scanning calorimetry
【24h】

Determination of PEG concentration in its aqueous solution using differential scanning calorimetry

机译：Determination of PEG concentration in its aqueous solution using differential scanning calorimetry

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

AbstractThe Freezing and melting behavior of aqueous poly(ethylene glycol) (PEG) solutions up to a concentration of 10% was examined using DSC. So long as the molecular weight of PEG is over 1000, the cooling and heating DSC curves have two peaks, which are attributed to freezable bound water and free water. The amounts of freezable bound water and nonfreezing water linearly increase with an increase of PEG concentration. Therefore, a method using DSC was proposed for determining the concentration of aqueous PEG solutions. Although PEG concentration can be determined by the heat of freezable bound water, the ratio of heat of freezable bound water to heat of free water is a better way to determine the concentration. © 1993 John Wiley&Sons, Inc

著录项

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