Superabsorbents starch grafted sodium polyacrylate was prepared by inverse suspension polymerization, using toluene as the continuous phase, potassium persulfate as the initiator. The effect of suspension parameters, ...Superabsorbents starch grafted sodium polyacrylate was prepared by inverse suspension polymerization, using toluene as the continuous phase, potassium persulfate as the initiator. The effect of suspension parameters, such as volume ratio of continuous phase and dispersed phase, type and dosage of suspending agents, on water absorbency of the starch grafted polymer was studied. Different starch derivatives were also investigated. Superabsorbents made of cationic starch has higher water absorbency than that made of native corn starch.展开更多
A new method for the preparation of a starch-graft-sodium acrylate-co-acrylamide superabsorbent using a thermal propagating front was described. The frontal polymerization(FP) is a simple mode of polymerization in whi...A new method for the preparation of a starch-graft-sodium acrylate-co-acrylamide superabsorbent using a thermal propagating front was described. The frontal polymerization(FP) is a simple mode of polymerization in which a localized zone of reaction propagates in an unstirred medium, converting monomer to polymer. Because no additional heat is needed after the initial application, the process has potential advantages over traditional polymerization methods: lower processing costs, faster reaction rate, and less energy input. These advantages make the frontal polymerization a potential viable option in polymer synthesis. Scanning electron microscope picture shows that porous superabsorbent can be synthesized by FP. The superabsorbent swelled fast with high water and salt solution absorbency.展开更多
文摘Superabsorbents starch grafted sodium polyacrylate was prepared by inverse suspension polymerization, using toluene as the continuous phase, potassium persulfate as the initiator. The effect of suspension parameters, such as volume ratio of continuous phase and dispersed phase, type and dosage of suspending agents, on water absorbency of the starch grafted polymer was studied. Different starch derivatives were also investigated. Superabsorbents made of cationic starch has higher water absorbency than that made of native corn starch.
文摘A new method for the preparation of a starch-graft-sodium acrylate-co-acrylamide superabsorbent using a thermal propagating front was described. The frontal polymerization(FP) is a simple mode of polymerization in which a localized zone of reaction propagates in an unstirred medium, converting monomer to polymer. Because no additional heat is needed after the initial application, the process has potential advantages over traditional polymerization methods: lower processing costs, faster reaction rate, and less energy input. These advantages make the frontal polymerization a potential viable option in polymer synthesis. Scanning electron microscope picture shows that porous superabsorbent can be synthesized by FP. The superabsorbent swelled fast with high water and salt solution absorbency.
