文章摘要
赵芬,胡飞.淀粉-丙烯酸盐-普鲁兰多糖Semi-IPN 的合成及特性[J].精细化工,2018,35(12):0
淀粉-丙烯酸盐-普鲁兰多糖Semi-IPN 的合成及特性
Synthesis and Hydration Characteristics of Starch-AA-PULL Semi-IPN Polymeric Material
投稿时间:2018-03-23  修订日期:2018-07-06
DOI:
中文关键词: 淀粉  普鲁兰多糖  互穿网络  水合特性
英文关键词: starch  pullulan  interpenetrating network  hydration characteristics
基金项目:
作者单位E-mail
赵芬 华南理工大学食品科学与工程学院 199410zf@sina.com 
胡飞 华南理工大学食品科学与工程学院 1038854322@qq.com 
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中文摘要:
      以马铃薯淀粉为基本骨架,小分子丙烯酸(AA)、弹性直链普鲁兰多糖(PULL)为原料,在过硫酸钾为引发剂,N,N'-亚甲基双丙烯酰胺(MBA)为交联剂的条件下,通过两步水溶液微波法制备了淀粉-丙烯酸盐-普鲁兰多糖半互穿网络聚合材料(st-AA-PULL);采用FTIR、SEM、BET对材料的结构进行了表征,并重点考察了产品的水合特性。结果表明:st-AA-PULL在蒸馏水中的平衡溶胀率高达1333g/g,在自来水和生理盐水中的平衡溶胀率分别为536、126g/g;与传统接枝淀粉聚合材料相比,半互穿网络聚合材料具有更优良的保水性,在60℃高温下放置90min仍保有近30%质量的水分,重复吸水5次后,吸水率仍可达近60%;在NaCl浓度0.02~0.10mol/L内,耐盐性也有较大提高,在NaCl浓度为0.10mol/L时平衡溶胀率仍保持在130g/g。
英文摘要:
      Using potato starch as the basic skeleton, small molecule acrylic acid (AA), structurally elastic straight pullulan (PULL) as raw material in the environment of potassium persulfate as initiator, N,N'-methylenebisacrylamide as cross-linking agent, the starch-acrylate-pullulan semi-interpenetrating network polymer (st-AA-PULL) was prepared by two-step aqueous solution microwave method.FTIR, SEM, and BET were used to analyze the molecular structure characteristics, and the hydration characteristics of the product were investigated. The results of hydration characteristics showed that the swelling rate of distilled water by st-AA-PULL was as high as 1333 g/g, and the swelling rate of tap water and physiological saline were 536 g/g and 126 g/g, respectively;the semi-interpenetrating network material has better water retention compared with traditional polymeric materials ,it retains nearly 30% of moisture after standing at 60℃ for 90 min. The water absorption rate can still reach nearly 60% after repeating the water absorption five times; and the NaCl salt tolerance is also greatly improved in the concentration range of 0.02 to 0.10 mol/L,the equilibrium swelling ratio was maintained at 130 g/g at salt concentration of 0.10 mol/L.
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