E. A. Podorozhko, V. G. Vasil’ev, M. I. Buzin, E. K. Golubev, M. A. Shcherbina
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引用次数: 0
摘要
摘要 研究了热预史和机械场对聚乙烯醇冷凝凝胶的形态、物理机械性能和热性能的影响。通过流变仪、DSC 和 X 天衍射分析等方法发现，提高冷凝凝胶的热处理温度会导致 PVA 冷凝凝胶熔化温度的升高和结晶度的变化，这是典型的退火现象。研究证实，在反复冷冻并同时强制压缩的条件下形成的 PVA 冷凝凝胶的退火过程有助于形成空间网络稳定的冷凝凝胶，直至溶剂开始沸腾。
Change in the Morphology and Properties of Poly(vinyl alcohol) Cryogels Depending on the Annealing Temperature
The effect of thermal prehistory and mechanical field on the morphology and physicomechanical and thermal properties of poly(vinyl alcohol) cryogels has been studied. Using the methods of rheometry, DSC, and X-day diffraction analysis it is revealed that an increase in the heat treatment temperature of cryogels causes a rise of the melting temperature and a change in the crystallinity of PVA cryogels, as is typical for the annealing phenomenon. It is established that the annealing of PVA cryogels formed under repeated freezing with simultaneous forced compression contributes to the formation of cryogels with the spatial network being stable up to the onset of solvent boiling.
期刊介绍：
Polymer Science, Series A is a journal published in collaboration with the Russian Academy of Sciences. Series A includes experimental and theoretical papers and reviews devoted to physicochemical studies of the structure and properties of polymers (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed. Online submission via Internet to the Series A, B, and C is available at http://polymsci.ru.
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