...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Diffusion-Controlled Recrystallization of Water Sorbed into Poly(meth)acrylates Revealed by Variable-Temperature Mid-Infrared Spectroscopy and Molecular Dynamics Simulation
【24h】

Diffusion-Controlled Recrystallization of Water Sorbed into Poly(meth)acrylates Revealed by Variable-Temperature Mid-Infrared Spectroscopy and Molecular Dynamics Simulation

机译：通过可变温度中红外光谱和分子动力学模拟揭示的水吸附到聚（甲基）丙烯酸酯中的水吸附的扩张。

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

Recrystallization behaviors of water sorbed into four poly(meth)acrylates, poly(2-methoxyethyl acrylate), poly(tetrahydrofurfuryl acrylate), poly(methyl acrylate), and poly (methyl methacrylate), are investigated by variable-temperature mid-infrared (VT-MIR) spectroscopy and molecular dynamics (MD) simulation. VT-MIR spectra demonstrate that recrystallization temperatures of water sorbed into the polymers are positively correlated with their glass-transition temperatures reported previously. The present MD simulation shows that a lower-limit temperature of the diffusion for the sorbed water and the glass-transition temperatures of the polymers also have a positive correlation, indicating that the recrystallization is controlled by diffusion mechanism rather than reorientation mechanism. Detailed molecular processes of not only recrystallization during rewarming but also crystallization during cooling and hydrogen-bonding states of water in the polymers are systematically analyzed and discussed.
机译：通过可变温度中红外线研究水（2-甲氧基乙酯），聚（四氢糠醛），聚（甲基丙烯酸甲酯），聚（甲基丙烯酸甲酯），聚（甲基丙烯酸甲酯），聚（甲基丙烯酸甲酯）和聚（甲基丙烯酸甲酯）的再结晶行为。 VT-MIR）光谱学和分子动力学（MD）模拟。 VT-MIR光谱表明，与先前报道的玻璃化温度呈正相关的水吸附到聚合物中的重结晶温度与其呈正相关。本MD仿真表明，用于吸附水和聚合物的玻璃化温度的扩散的下限温度也具有正相关性，表明重结晶由扩散机构而不是重新定向机构控制。系统地分析并讨论了在聚合物中的冷却和氢键键期间再结晶而且在冷却和氢键结晶期间结晶的详细分子方法。

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