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首页> 外文期刊>Journal of Applied Polymer Science >Phase behavior of N-isopropylacrylamide/acrylic acid copolymer hydrogels prepared with ultrasound
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Phase behavior of N-isopropylacrylamide/acrylic acid copolymer hydrogels prepared with ultrasound

机译：超声制备的N-异丙基丙烯酰胺/丙烯酸共聚物水凝胶的相行为

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摘要

N-Isopropylacrylamide/acrylic acid copolymer hydrogels were synthesized with ultrasound. The thermoresponsive phase behaviors of gels synthesized with ultrasound (US gels) were investigated and compared with those of gels synthesized in the absence of ultrasound (FR gels). The US gels showed thermoresponsive swelling behavior with a large hysteresis over a wide range of temperatures around its phase-transition temperature. The hysteresis became larger with an increasing copolymerized acrylic acid content. The US gels were also characterized from the viewpoint of chemical, hydration, and macroscopic physical structures. Little difference was observed in the chemical and hydration structures of the FR gels and US gels. The macroscopic physical structure of the US gels was, however, distinct from that of the FR gels. (C) 2003 Wiley Periodicals, Inc. [References: 29]
机译：超声合成了N-异丙基丙烯酰胺/丙烯酸共聚物水凝胶。研究了用超声合成的凝胶（US凝胶）的热响应相行为，并将其与不使用超声合成的凝胶（FR凝胶）的热响应相行为进行了比较。 US凝胶在其相变温度附近的较宽温度范围内显示出具有大滞后性的热响应性膨胀行为。随着共聚丙烯酸含量的增加，磁滞变大。从化学，水合和宏观物理结构的角度对US凝胶进行了表征。 FR凝胶和US凝胶的化学和水合结构几乎未见差异。但是，US凝胶的宏观物理结构不同于FR凝胶。 （C）2003 Wiley Periodicals，Inc. [参考：29]

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