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| Preparation of Graft Copolymer of AMPS and Nanofibrillatedcellulose and its Application in Superabsorbents |
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| DOI：10.11980/j.issn.0254-508X.2017.03.004 |
| Key Words:nanofiberillated cellulose AMPS grafting modification superabsorbent polymers |
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| Abstract:Nanocellulose have become fascinating functional material because of its unique properties, but in order to adapt the interfacial properties or adjust the corresponding effect, the chemical modifications are prerequisite, sometimes unavoidable. This study 2-acrylamido-2-methylpropane sulfonic acid (AMPS) were grafted onto the surface of NFC via the ceric ammonium nitrate-induced polymerization process to prepare a graft copolymer AMPS-NFC, then further applied to AMPS-NFC/PAA based superabsorbent manufacture by UV induced polymerization process. The results indicated that the grafted ratio of AMPS increased with AMPS addition amount increase , the resultant superabsorbent resin had higher absorbency. Compared to the control (TEMPO-NFC), at a 2wt% of AMPS-NFC(the amount of grafted AMPS was 1.725 mmol/g) addition, the water absorbency of the resultant PAA hydrogel/ AMPS-NFC composites increased from 380 to 620 g/g, while the absorbing rate in deionized water and 0.9% NaCl solution increased by 13.3% and 20.8%, respectively. |
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