Affiliation:
1. Post Graduate Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat State, India
2. Tridev Resins (India) Pvt. Ltd. 136/E-1, II Phase, G.I.D.C., Vapi 396195, Gujarat State, India
Abstract
The water absorption measurements of a novel superabsorbent anionic hydrogel, H-Na-PCMSA-g-PAN, has been reported first time in water with a poor conductivity, 0.15 M saline (NaCl, CaCl2, and AlCl3) solutions, and simulated urine (SU) solutions at various times. The hydrogel has been prepared by the saponification of the graft copolymer, Na-PCMSA-g-PAN (%G = 316.53, %GE = 99.31). Results indicated that as compared to the swelling capacity values evaluated in water with a poor conductivity, the ability of the hydrogel to swell in various saline solutions with the same concentration is significantly reduced at all different durations. The swelling tends to be Na+ > Ca2+ > Al3+ at the same saline concentration in the solution. Studies of the absorbency in various aqueous saline (NaCl) solutions also revealed that the swelling capacity decreased as the ionic strength of the swelling medium rose, which is consistent with the experimental results and Flory’s equation. Furthermore, the experimental results strongly suggested that second-order kinetics governs the swelling process of the hydrogel in various swelling media. The swelling characteristics and equilibrium water contents for the hydrogel in various swelling media have also been researched. The hydrogel samples have been successfully characterized by FTIR to show the change in chemical environment to COO− and CONH2 groups after swelling in different swelling media. The samples have also been characterized by SEM technique.
Funder
University Grants Commission, New Delhi, India
Subject
Polymers and Plastics,Organic Chemistry,Biomaterials,Bioengineering
Reference36 articles.
1. Polysaccharide based superabsorbent hydrogels and their methods of synthesis: A review;Qureshi;Carbohydr. Polym. Technol. Appl.,2020
2. Siepmann, J., Siegel, R., and Rathbone, M. (2012). Hydrogels, Fundamental and Applications of Controlled Release Drug Delivery, Springer. Chapter 4.
3. Superabsorbent hydrogels based on polysaccharides for application in agriculture as soil conditioner and nutrient carrier: A review;Guilherme;Eur. Polym. J.,2015
4. Superabsorbent polymers in agriculture and other applications: A review;Behera;Polym-Plast. Tech. Mat.,2019
5. Biomedical applications of hydrogels: A review of patents and commercial products;Vitaliy;Eur. Polym. J.,2015
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