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Preparation of hydrogel from green polymer

机译：由绿色聚合物制备水凝胶

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A new method was used for the production of hydrogels from green polymer with a higher swelling ratio. These hydrogels were synthesized first by graft copolymerization between acrylamide (AM) and poly(vinyl alcohol) (PVA) with alkaline or kraft lignin (AM-PVA-g-lignin) and then by mixing with acrylamide monomer. The kraft and alkaline lignins were isolated from pulping liquor and characterized using UV and FT-IR spectroscopy, and the formed hydrogels were characterized using FT-IR spectroscopy and scanning electron microscopy (SEM). Compared with kraft lignin hydrogel, the alkaline lignin hydrogel had very high swelling ratios and slower water uptake and deswelling rates attributed to its compatible network structure. The hydrogels formed were used also to study the influence of sodium chloride on the absorption capacity at room temperature and swelling ratios at different temperatures.
机译：一种新的方法被用来由具有更高溶胀率的绿色聚合物生产水凝胶。这些水凝胶首先通过丙烯酰胺（AM）和聚乙烯醇（PVA）与碱性或硫酸盐木质素（AM-PVA-g-木质素）接枝共聚，然后与丙烯酰胺单体混合而合成。从制浆液中分离出牛皮纸和碱性木质素，并使用UV和FT-IR光谱进行表征，并使用FT-IR光谱和扫描电子显微镜（SEM）表征所形成的水凝胶。与牛皮纸木质素水凝胶相比，碱性木质素水凝胶具有非常高的溶胀率，并且由于其相容的网络结构而具有较慢的吸水率和溶胀率。所形成的水凝胶还用于研究氯化钠对室温下的吸收容量和不同温度下的溶胀率的影响。

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