Preparation and swelling behavior of a novel self-assembled β-cyclodextrin/acrylic acid/sodium alginate hydrogel.
Preparation and swelling behavior of a novel self-assembled β-cyclodextrin/acrylic acid/sodium alginate hydrogel.
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DOI：
10.1016/j.carbpol.2014.07.009
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发表时间：
2014-11
影响因子：
11.2
通讯作者：
Zhanhua Huang;Shouxin Liu;Bin Zhang;Qinglin Wu
中科院分区：
文献类型：
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作者：
Zhanhua Huang;Shouxin Liu;Bin Zhang;Qinglin Wu
采用反相悬浮共聚法制备了具有三维网络结构的新型可生物降解β-环糊精/丙烯酸/海藻酸钠(CsA)水凝胶。CSA树脂对pH敏感，在pH为6~8的缓冲溶液中具有良好的吸水性能。当β-Cd：AA：SA的质量比为1：9：3时，CsA的吸水率为1403g/g，水凝胶强度为4.968 nmol.在0.005-0.1mmol.L的氯盐和硫酸盐溶液中，CsA的吸水率分别为：氯化钠、氯化钾、氯化钾、氯化镁、氯化亚铁和硫酸盐。CSA水凝胶在120h内缓慢释放水分，对香菇的生物降解率达到85.3%。CSA的超强吸水性、良好的耐盐性和良好的保水性能使其适合作为农业保水剂在盐碱地上应用。
A novel biodegradable β-cyclodextrin/acrylic acid/sodium alginate (CSA) hydrogel with a three-dimensional network structure was self-assembled by inverse suspension copolymerization. The CSA resin was pH sensitive and had good water absorption properties in pH 6–8 buffer solutions. At a β-CD:AA:SA mass ratio of 1:9:3 the CSA water absorbency was found to be 1403 g/g and the CSA hydrogel strength was 4.968 N. In 0.005–0.1 mol/L chloride salt and sulfate salt solutions the CSA water absorbencies increased as follows: NaCl > KCl > MgCl2> CaCl2> FeCl3, and Na2SO4> K2SO4> FeSO4> Al2(SO4)3, respectively. The release of water from the CSA hydrogel occurred slowly over 120 h. The biodegradation efficiency of the resin reached 85.3% forLentinula edodes.The super water absorbency, good salt resistance and excellent water retention properties of CSA make it suitable for application as an agricultural water retention agent in saline soils.