• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >The modification mechanism and the effect of magnesium chloride on poly(vinyl alcohol) films
【24h】

The modification mechanism and the effect of magnesium chloride on poly(vinyl alcohol) films

机译：氯化镁对聚（乙烯醇）薄膜的改性机制及其影响

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

摘要

The modification mechanism and the effect of MgCl _(2) on poly(vinyl alcohol) and the effect of water in the system were studied in this paper. The effect of MgCl _(2) on different fully dried PVA was investigated by Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimeter, thermogravimetric analysis, water content test, dynamic thermomechanical analysis and tensile test, respectively. The results showed that MgCl _(2) was an effective strengthening agent, which could crosslink with PVA and then effectively decrease the crystallinity of PVA. With the addition of MgCl _(2) , the strength and rigidity of PVA increased and the melting temperature decreased. The effect of MgCl _(2) on thermal stability of PVA was related to the alcoholysis degree of PVA. The tensile strength of PVA films modified with MgCl _(2) were all over 120 MPa. Moreover, the effect of MgCl _(2) on the dynamic thermomechanical properties and tensile properties of PVA with various content of water was studied. Water could interact with MgCl _(2) to destroy the crosslink between MgCl _(2) and PVA. In the presence of water, PVA modified with MgCl _(2) became soft, with lower tensile strength and higher elongation at break.
机译：本文研究了MgCl _（2）对聚（乙烯醇）的改性机制及其对水中水的影响。通过傅立叶变换红外光谱，X射线衍射，差示扫描量热计，热重分析，含水量试验，动态热机械分析和拉伸试验研究了MgCl _（2）对不同完全干燥的PVA的影响。结果表明，MgCl _（2）是一种有效的加强剂，其可以与PVA交联，然后有效地降低PVA的结晶度。随着添加MgCl _（2），PVA的强度和刚度增加，熔化温度降低。 MgCl _（2）对PVA热稳定性的影响与PVA的醇解有关。用MgCl _（2）改性的PVA薄膜的拉伸强度均超过120MPa。此外，研究了MgCl _（2）对具有各种水含量的PVA动态热机械性能和拉伸性能的影响。水可以与MgCl _（2）相互作用以破坏MgCl _（2）和PVA之间的交联。在水的存在下，用MgCl _（2）改性的PVA变得柔软，具有较低的拉伸强度和较高的突破伸长率。

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