Objective: To synthesize and characterize superporous hydrogel hybrids of konjac glucomannan (KGM-SPHH). Method: KGM-SPHH was prepared by foam polymerization method.Synthesis conditions

including the amount of each reacting agents

were optimized by single factor tests according to swelling kinetics of these obtained samples.Morphology and chemical structure of KGM-SPHH were analyzed by SEM and FTIR. Result: Optimized synthesis conditions were as follows:50% acrylamide (AM) 2 mL

50% acrylic acid (AA) 0.3 mL

2.5% N

N'

-methylene-bis-acrylamide 2 mL

10% pluronic f127 0.3 mL

20% ammonium persulfate 0.2 mL

konjac glucomannan (KGM) 0.1 g

20% N

N

N'

N'

-tetramethylethylene diamine 0.2 mL

NaHCO3 0.2 g.A homogeneous KGM-SPHH could be prepared under proper ratio of reagents

and it could quickly absorb large amount of water to reach swelling equilibrium.KGM-SPHH showed a large number of connected pores under SEM

AA-co-AM and cross-linked KGM in FTIR spectra. Conclusion: Homogeneous KGM-SPHH with porous structure and quick swelling property could be obtained by foam polymerization method.