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Different morphologies of the dry physical gels as a function of the sample preparation method

机译:干燥物理凝胶的不同形态随样品制备方法的变化

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摘要

Xerogels obtained by drying the gels formed by glucofuranose derivatives with organic solvents were studied. The xerogels were characterized using the SEM, XRD, DSC and OPM techniques. The morphology of a xerogel observed by SEM may change from 'amorphous, fibrillar' to 'crystal-like', which may be caused by time or temperature. The results suggest that a similar transition may take place when the xerogel is being prepared. Thus SEM pictures of xerogels should be treated with great caution as they may not reflect the gelator network morphology in the bulk gel.
机译:研究了通过用有机溶剂干燥葡萄糖呋喃糖衍生物形成的凝胶而获得的干凝胶。使用SEM,XRD,DSC和OPM技术对干凝胶进行了表征。 SEM观察到的干凝胶形态可能会从“无定形,原纤维”变为“晶体状”,这可能是由时间或温度引起的。结果表明,制备干凝胶时可能发生类似的转变。因此,干凝胶的SEM图片应格外小心,因为它们可能无法反映散装凝胶中的凝胶网络形态。

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