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首页> 外文期刊>Journal of Applied Polymer Science >Intelligent gels and cryogels with embedded emulsions of various oils
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Intelligent gels and cryogels with embedded emulsions of various oils

机译：嵌入各种油的乳液的智能凝胶和冰凝胶

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摘要

Thermo-responsive gels and cryogels with embedded microdroplets of Vaseline, olive, peanut, and linseed oils and their mixtures with hydrophobic dye Sudan 3 have been synthesized and studied. These composite gel matrices were obtained by the three-dimensional copolymerization of N-isopropylacrylamide and N, N'-bis(acryloyl)cystamine in the presence of oil emulsions stabilized with sodium dodecylsulfate or Span 80. Polymerization was performed at room temperature for conventional gels and at -15°C for cryogels. It was shown that all synthesized systems exhibit heat-induced collapse at temperatures higher then 34°C. For conventional gels prepared at room temperature shrinking lasts within 20 to 80 min in accordance with gel composition. No squeezing of oil droplets was observed. In the case of cryogels, shrinking was accompanied by release of oils and response time was significantly shorter, about tens of seconds. Collapse character and release of lipophilic phase did not depend on the chemical nature of oils, dissolved compounds, and surfactant used for emulsion stabilization.
机译：合成和研究了嵌入有凡士林，橄榄油，花生和亚麻仁油的微滴的热响应性凝胶和冰凝胶及其与疏水性染料苏丹3的混合物。这些复合凝胶基质是通过在十二烷基硫酸钠或Span 80稳定的油乳液存在下，N-异丙基丙烯酰胺和N，N'-双（丙烯酰基）胱胺的三维共聚获得的。常规凝胶在室温下进行聚合并在-15°C下冷冻。结果表明，所有合成系统在高于34°C的温度下均表现出热诱导的塌陷。对于在室温下制备的常规凝胶，根据凝胶组成，收缩持续20至80分钟。没有观察到油滴的挤压。对于冰冻凝胶，收缩伴随着油的释放，响应时间显着缩短，约数十秒。亲脂相的塌陷特征和释放不取决于油，溶解的化合物和用于乳液稳定化的表面活性剂的化学性质。

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