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首页> 外文期刊>Journal of Materials Science >ON THE PHASE DIAGRAM OF THE SYSTEM HYDROXYPROPYLCELLULOSE-WATER
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ON THE PHASE DIAGRAM OF THE SYSTEM HYDROXYPROPYLCELLULOSE-WATER

机译:羟丙基纤维素水相图

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The phase diagram of the system hydroxypropylcellulose (HPC)-H2O has been investigated using differential scanning calorimetry (DSC), X-ray diffraction, optical microscopy and H-1 (NMR) nuclear magnetic resonance spectroscopy. A peritectic line at higher temperatures has been found similar to the lytropic systems described before. This phase transition, from a solution consisting of solvate aggregates and free solvent, into a crystal solvate-isotropic phase system is completely reversible. The formation of crystal solvate phases is independent of the water content of the system until the system transforms into a thermotropic system. The solvent molecules are strongly associated with the macromolecules. [References: 12]
机译:使用差示扫描量热法(DSC),X射线衍射,光学显微镜和H-1(NMR)核磁共振波谱研究了系统羟丙基纤维素(HPC)-H2O的相图。已经发现高温下的包晶线类似于前述的溶致体系。从溶剂化物聚集体和游离溶剂组成的溶液到结晶溶剂化物各向同性相系统的这种相变是完全可逆的。晶体溶剂化物相的形成与系统的水含量无关,直到系统转变为热致体系。溶剂分子与大分子紧密结合。 [参考:12]

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