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首页> 外文期刊>Journal of Applied Polymer Science >THERMOREVERSIBLE HYDROGELS .2. EFFECT OF SOME FACTORS ON THE SWELLING BEHAVIOR OF N,N-DIMETHYLACRYLAMIDE AND N-BUTOXYMETHYL ACRYLAMIDE COPOLYMERIC GELS
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THERMOREVERSIBLE HYDROGELS .2. EFFECT OF SOME FACTORS ON THE SWELLING BEHAVIOR OF N,N-DIMETHYLACRYLAMIDE AND N-BUTOXYMETHYL ACRYLAMIDE COPOLYMERIC GELS

机译：热可逆水合物.2。某些因素对N，N-二甲基丙烯酰胺和N-丁氧基丙烯酸丙烯酰胺共聚物凝胶的溶胀行为的影响

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摘要

A series of thermoreversible hydrogels are prepared from the various molar ratios of N,N-dimethylacrylamide (DMA), n-butoxymethyl acrylamide (nBMA), and N,N'-methylenebisacrylamide (NMBA). The influences of the amount of DMA in the copolymeric gels, temperature, and polymerization media on the swelling behaviors in water are investigated. Results indicate that the higher the DMA content in the hydrogel systems the higher the swelling ratio and the gel transition temperature. The effects of the gel thickness on the swelling ratio for DMABMA copolymeric gels indicate that the equilibrium swelling time and diffusion coefficient for the thinner gel (1.5 mm) from the dried state to the completely swollen state are obviously faster than are those for the thicker gels (2.0 and 3.5 mm). The effects of the different polymerization media on the swelling ratio for DMABMA. copolymeric gels also show that the larger the solvent molecular size and the poor miscibility of the monomer and solvent the higher the swelling ratio and the diffusion coefficient. The drug release in these copolymeric gel systems are also investigated. (C) 1997 John Wiley & Sons, Inc. [References: 27]
机译：由N，N-二甲基丙烯酰胺（DMA），正丁氧基甲基丙烯酰胺（nBMA）和N，N'-亚甲基双丙烯酰胺（NMBA）的各种摩尔比制备一系列热可逆水凝胶。研究了共聚凝胶中DMA的量，温度和聚合介质对水中溶胀行为的影响。结果表明，水凝胶体系中的DMA含量越高，溶胀率和凝胶转变温度越高。凝胶厚度对DMA / nBMA共聚物凝胶的溶胀率的影响表明，较薄的凝胶（1.5毫米）从干燥状态到完全溶胀状态的平衡溶胀时间和扩散系数明显快于DMA / nBMA共聚物。较厚的凝胶（2.0和3.5毫米）。不同聚合介质对DMA / nBMA溶胀率的影响。共聚物凝胶还表明，溶剂分子尺寸越大，单体与溶剂的互溶性越差，溶胀率和扩散系数越高。还研究了在这些共聚凝胶体系中的药物释放。 （C）1997 John Wiley＆Sons，Inc. [参考：27]

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