Characterization and biodegradability of amphoteric superabsorbent polymers |
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Authors: | Dan Wang Zhan‐Qian Song Shi‐Bin Shang |
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Affiliation: | 1. Institute of Chemical Industry of Forest Products, CAF, Nanjing, China;2. Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China |
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Abstract: | Novel amphoteric superabsorbent polymers (SAPs) based on carboxymethyl cellulose, acrylic acid, acrylamide, and [2‐(methylacryloyloxy)ethyl]trimethylammonium chloride were prepared by inverse suspension copolymerization. The SAPs were characterized by Fourier transforms infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy. The absorbency or swelling behaviors in deionized water, saline solutions, and pH value solutions were investigated. Experimental results indicate that the absorbency in various solutions decreases with an increase of the ion concentration, which was attributed to osmotic pressure of water and ions between the polymeric gel and the external solutions. Biodegradability of the amphoteric SAPs was also reported. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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Keywords: | amphoteric swelling biodegradable FTIR characterization |
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