2007•Journal of Shaanxi University of Science & TechnologyRequires access
STUDY ON SYNTHESIS OF THE SUPER ABSORBENT POLYMER BY GRAFTING ACRYLIC ACIDON TO XANTHAN GUM
Xiao Hao-jiang
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Abstract
The superabsorbent polymer was synthesized with acrylic acid grafted on xanthan gum.The effects of factors such as neutralization,amount of graft monomer,initiator and cross-linking agent and temperature on the swelling ratio of the superabsorbent polymer were discussed.The optimum reaction conditions were determined as follows: reaction temperature 65℃,AA∶xanthan gum=5∶1 and neutralization 75%,dosage of initiator 0.08and cross-linking agent 0.031(based on mass of acrylic acid).The results show that the absorbent ability of this resin was 1 026 g·g-1 for pure water and 716g·g-1 for NaCl solution.The speed of water absorption was moderate and water-retention ability were good,it is a new water-absorbent with high performance.