Development of poly(acrylic acid)/nanofibrillated cellulose superabsorbent composites by ultraviolet light induced polymerization

作者：Wen, Yangbing^*; Zhu, Xuhai; Gauthier, Dominic E.; An, Xinye; Cheng, Dong; Ni, Yonghao; Yin, Lihua

来源：Cellulose, 2015, 22(4): 2499-2506.

DOI：10.1007/s10570-015-0639-6

• Nano-fibrillated cellulose
• PAA hydrogel/NFC composites
• UV-induced polymerization
• Absorbency
• Swelling rate

In this study, nano-fibrillated cellulose (NFC) was added during the UV-induced polymerization process of acrylic acid, so that the resulting poly-(acylic acid)/NFC composites can have improved water absorbency and swelling rate. The effects of process parameters, including NFC content on the UV-induced polymerization process, and the properties of resulting PAA hydrogel/NFC composites were investigated. Results showed that the addition of a small amount of NFC led to significant increase in both water absorbency and swelling rate of the PAA hydrogel/NFC composites. When compared to the control (without the addition of NFC), the water absorbency of the resulting PAA hydrogel/NFC composites increased from 380 to 525 g/g at 1 wt% of NFC addition (based on the dry weight of acrylic acid), while the swelling rate in deionized water and 0.9 % NaCl solution increased by 17.6 and 25.0 %, respectively. The results indicated that the PAA hydrogel/NFC composites were very promising for industrial application.

• 出版日期2015-8
• 单位天津科技大学