Superabsorbent polymers of guar gum -graft-acrylamide were synthesized using KPS as a free radical initiator in the presence of Tetra (ethylene glycol) diacrylate as a cross linker using solution graft copolymerization technique. The structures of the grafted copolymers GG-g-PAAm were characterized by FT-IR spectroscopy thermo gravimetric and SEM analysis. The effect of reaction parameters such as concentration of guar gum, acrylamide, KPS, crosslinker (TEGDA), and NaOH (neutralizing agent) were optimized to achieve a superabsorbent polymers with high swelling capacity of 80 g/g (deionisied water) and 22 g/g (0.8 wt% sodium chloride solution). The swelling kinetics of the synthesized superabsorbent were analyzed by applying the Fickian diffusion model and the Schott’s pseudo second order kinetics model, illuminating that chain leisure behavior during absorption had a great effect on whole absorbency.

在溶液中采用溶液接枝共聚技术，以KPS为自由基引发剂，在二丙烯酸Tetra（乙二醇）酯为交联剂的条件下，合成了瓜耳胶-接枝-丙烯酰胺的超强吸收性聚合物。接枝共聚物GG-g- P的结构通过FT-IR光谱热重分析和SEM分析对AAm进行表征。优化了瓜尔胶，丙烯酰胺，KPS，交联剂（TEGDA）和NaOH（中和剂）的浓度等反应参数的影响，以实现具有80 g / g（去离子水）和22 g的高溶胀能力的超吸收性聚合物/g(0.8重量％氯化钠溶液）。通过应用菲克扩散模型和肖特的拟二阶动力学模型分析了合成的超吸收剂的溶胀动力学，表明吸收过程中链的松弛行为对整个吸收性能有很大的影响。