CUI Yingde, GUO Jianwei, LIU Sa, et al. SYNTHESIS OF SA-IP-SPS SUPERABSORBENTS BY STATIC SOLUTION POLYMERIZATION[J]. CIESC Journal, 2003, (5): 665-669.
CUI Yingde, GUO Jianwei, LIU Sa, et al. SYNTHESIS OF SA-IP-SPS SUPERABSORBENTS BY STATIC SOLUTION POLYMERIZATION[J]. CIESC Journal, 2003, (5): 665-669.DOI:
Sodium PVA sulfate(SPS) was prepared through the sulfonation of the hydroxyl groups of PVA by using chlorosulfonic acid as sulfonating agent. Industrial grade acrylic acid and SPS were used as raw materials of static solution polymerization to synthesize acrylic acid-based superabsorbents inter-penetrated with sodium PVA sulfate (SA-IP-SPS) which have higher water and saline absorbency.Characterization results with IR
TG and sulfur content measurement proved the formation of inter-penetrating network structure in SA-IP-SPS superabsorbents. The effects of SPS content and PVA relative molecular mass on the absorbency of the superabsorbents were studied and the optimized SPS content and the PVA relative molecular mass were 3% and 90000—124000 respectively. Under the optimized reaction conditions
the water absorbency was about 900g·g-1
and the 0.9% NaCl solution absorbency is 97 g·g-1.