Study on Synthesis of Superabsorbent Using Microwave Heating and Water Absorbency

Abstract:

The aqueous solution polymerization methods were carried out using microwave heating for the superabsorbent synthesis experiment. The differences between reaction temperatures and reaction times were compared respectively under the same conventional heating conditions. The results showed that microwave heating can generate better results: The maximum of distilled water absorbency is 711 times, and the maximum of 0.9% saline water absorbency is 86 times when the polymerization temperature is at 35 °C and the reaction time is 1.5 h. Water absorbency of the superabsorbent obtained using microwave heating is better than that of conventional heating. Analysis of FTIR and SEM showed that starch grafting with acrylic acid and acrylamide was successful, and a three-dimensional network structure was formed in superabsorbent. The causes of organic reactions accelerated using microwave heating were also discussed in this paper.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 1854-1857
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.1854
• Online since: May 2011
• Authors: Hao Ren, Yu Fen Zhang, Tai Zhong Huang, Juan Wang
• Keywords: Microwave Heating, Starch, Superabsorbent, Synthesis, Water Absorbency

References

[1] Qinhan Jin: Microwave Chemistry. Beijing: Science Press, 1999 (In Chinese).

[2] Juan Wang: University of Jinan Master Thesis (2009) (In Chinese).

[3] Hongke Tang, Qi Chen: Chinese Journal of Synthetic Chemistry Vol.15 (2007), p.643.

[4] Huaiyu Wen: Jiangnan University Master Thesis (2006) (In Chinese).

[5] Hui Zhang: Xi'an University of Architecture and Technology Master Thesis (2007) (In Chinese).