A　novel　konjac　glucomannan-acrylic　acid　superabsorbent　(KGMP)　was　prepared　by　the　solution　polymerization　of　partially　neutralized　acrylic　acid　(AA)　onto　konjac　glucomannan　(KGM)　using　potassium　persulfate　(KPS)　as　a　free　radical　initiator　and　trimethylolpropane　trimethacrylate　(TPTA)　as　a　crosslinking　agent.　Effects　of　the　content　of　TPTA　on　the　water　absorption　in　buffer　solutions　of　different　pH　were　investigated.　The　results　showed　that　the　swelling　ratio　exhibited　the　largest　value　at　pH　7.4　due　to　electrical　interaction.　There　was　an　appropriate　content　of　TPTA　in　the　KGMP　that　made　the　swelling　ratio　reach　its　maximum.　Swelling　kinetics　of　the　KGMP　at　pH　7.4　was　also　studied.　The　swelling　processes　of　the　polymers　can　be　fitted　to　the　first-order　reaction　kinetics.　The　structure,　morphology　and　thermal　stability　of　KGMP　were　further　characterized　using　Fourier　transform　infrared　spectroscopy　(FTIR),　X-ray　diffraction　(XRD),　thermogravimetric　analysis　(TGA)　and　scanning　electron　microscopy　(SEM),　using　KGM　as　reference.　Results　indicated　that　a　successful　graft　polymerization　reaction　and　excellent　miscibility　occurred　between　KGM　and　AA　and　the　content　of　TPTA　affected　the　orderliness　of　KGMP.　This　journal　is　©　The　Royal　Society　of　Chemistry　2015.