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| 1 | Preparation, Swelling and Antibacterial Behaviors of N-Succinyl Chitosan-g-Poly(Acrylic Acid-co-Acrylamide) Superabsorbent Hydrogels显示文摘Superabsorbent hydrogels were prepared successfully from N-succinyl chitosan grafted poly(acrylic acid-co-acrylamide). The potassium persulfate(KPS), N, N'-methylenebisacrylamide(MBA) were used as the initiator and crosslinker, respectively. Fourier transform infrared spectroscopy(FTIR) and scanning electron microscopy(SEM) were used to confirm the porous network structure of superabsorbent hydrogel. The effects of reaction parameters on the swelling behaviors of the superabsorbent hydrogels were investigated. The results indicated that water absorbency increased first, and then decreased gradually with the increase in the contents of monomer(AA+AM), KPS, MBA or acrylamide. The product had excellent water absorbency of 1375 g/g in distilled water and 83 g/g in 0.9wt% NaCl solution. Simultaneously, the superabsorbent hydrogels were p H sensitive. The antibacterial activities of the hydrogels against Escherichia coli(E. coli) were improved effectively because of polyamidoamine(PAMAM) dendrimer absorbed in the hydrogels. | 何广华 ke wanwan liu liang li ya 郑化 yin yihua yi ying | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，4： | 0 |
| 2 | Synthesis and Swelling Behaviors of Microcrystal Muscovite Composite Superabsorbent by Photopolymerization显示文摘A new microcrystal muscovite composite superabsorbent was synthesized by UV photopolymerization using 2-hydroxy-2-methylpropiophenone(1 173) as photoinitiator,N,N-methylene bisacrylamide(MBA) as crosslinker,acrylic acid(AA),acrylamide(AM) and sodium 4-styrenesulfonate(SSS) as comonomers.Factors affecting water and salt absorption of the microcrystal muscovite composite superabsorbent,such as crosslinker amount,microcrystal muscovite concentration,photoinitiator content,and SSS concentration,were systematically studied.Water retention capacity of the composite superabsorbent was also investigated.The results show that microcrystal muscovite composite superabsorbent has water absorbency of 550 g/g,salt absorbency of 62 g/g,and water retention of 60% after heating at 70 ℃ for 40 h.The microcrystal muscovite is physically combined into the polymeric network without destroying its polycrystalline structure and the surface of the microcrystal muscovite composite superabsorbent has some deep and small holes. | 万涛 LIAO Ling HUANG Runqiu WU Daqing Tang Li XIONG Jing CHEN Qiaohe | 2016 | Journal of Wuhan University of Technology(Materials Science)2016，31，1： | 0 |
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