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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of polyacrylamide/graphite oxide superabsorbent nanocomposites with salt tolerance and slow release properties
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Preparation of polyacrylamide/graphite oxide superabsorbent nanocomposites with salt tolerance and slow release properties

机译：具有耐盐性和缓释性能的聚丙烯酰胺/氧化石墨超吸收性纳米复合材料的制备

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摘要

Novel polyacrylamide/graphite oxide (PAM/GO) superabsorbent nanocomposites were synthesized by a simple solution polymerization of acrylamide using N,N ′-methylenebisacrylamide as crosslinker and ammonium persulfate as initiator. The well dispersion of GO nanoplatelets in the polymeric network results in a remarkable improvement on the comprehensive swelling performance of the resulting superabsorbent nanocomposites. The water absorption experimental results show that the superabsorbent nanocomposites could absorb water as twice as that of crosslinked polyacrylamide (PAM) superabsorbent with a weight gain of 400 g g~(-1) with a low loading of GO. The salt tolerance and water-retention ability of the resulting PAM/GO superabsorbent nanocomposites are also enhanced compared with PAM. Moreover, by embedding of ammonium salt into PAM/GO network, the PAM/GO superabsorbent nanocomposites also exhibit a slow release behavior of ammonium salt from network when swelling in water, which makes the PAM/GO superabsorbent nanocomposites multifunctional absorbent materials with great potential for agricultural and horticultural applications.
机译：以N，N′-亚甲基双丙烯酰胺为交联剂，过硫酸铵为引发剂，通过丙烯酰胺的简单溶液聚合，合成了新型聚丙烯酰胺/氧化石墨（PAM / GO）超吸收性纳米复合材料。 GO纳米片在聚合物网络中的良好分散性导致所得超吸收纳米复合材料的全面溶胀性能得到显着改善。吸水率实验结果表明，高吸水性纳米复合材料的吸水率是交联聚丙烯酰胺（PAM）超吸水剂的两倍，重量增加了400 g g〜（-1），GO含量低。与PAM相比，所得PAM / GO超吸收性纳米复合材料的耐盐性和保水能力也得到增强。此外，通过将铵盐嵌入PAM / GO网络中，PAM / GO超吸收性纳米复合材料在水中溶胀时，铵盐也从网络中释放出缓慢的行为，这使得PAM / GO超吸收性纳米复合材料具有多功能的吸收材料的潜力。农业和园艺应用。

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