Recrystallization of Water in a Non-Water-Soluble Polymer Examined by Fourier Transform Infrared Spectroscopy: Poly(2-methoxyethylacrylate) with Low Water Content
Recrystallization of Water in a Non-Water-Soluble Polymer Examined by Fourier Transform Infrared Spectroscopy: Poly(2-methoxyethylacrylate) with Low Water Content
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DOI：
10.1021/jp806973c
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发表时间：
2008-10-16
影响因子：
3.3
通讯作者：
Kitano, Hiromi
中科院分区：
文献类型：
--
作者：
Gemmei-Ide, Makoto;Kitano, Hiromi
用变温傅里叶变换红外光谱技术研究了聚甲基丙烯酸2-甲氧基乙酯(PMEA)中水在加热过程中的结晶过程。聚合物-水体系中的重结晶通常被理解为从玻璃水(冷凝水)到结晶水的相变。然而，低水含量的PMEA-水体系的红外光谱变化表明，加热过程中冰i-h的形成是通过气相沉积过程而不是结晶过程发生的。
Crystallization of water during heating, the so-called "recrystallization of water", in poly(2-methoxyethylacrylate) (PMEA) was investigated by temperature-variable Fourier transform infrared spectroscopy. Recrystallization in a polymer-water system is generally understood to be a phase transition from glassy water (condensed water) to crystalline water. However, infrared spectral changes of the PMEA-water system with low water content indicated that the formation of ice I-h during heating occurred by a vapor deposition process rather than by a crystallization process.