6 kinds of IPN's PVA were synthesized by using different monomers of HEMA, MAA and MMA. The effect of adding polysaccharide was also studied. The cell growth on them were determined and compared. The results showe...6 kinds of IPN's PVA were synthesized by using different monomers of HEMA, MAA and MMA. The effect of adding polysaccharide was also studied. The cell growth on them were determined and compared. The results showed that the cell growth property of the IPN's PVA with hydrophobic monomer of MMA is better, and it can be improved further by adding hyaluronic acid.展开更多
Novel triblock copolymers of poly (L-lactide)-poly (ethylene glycol)-sebacate-poly (ethylene glycol)-poly (L-lactide) were synthesized by Ring-Opening Polymerization of different ratios of L-lactide with other three p...Novel triblock copolymers of poly (L-lactide)-poly (ethylene glycol)-sebacate-poly (ethylene glycol)-poly (L-lactide) were synthesized by Ring-Opening Polymerization of different ratios of L-lactide with other three pre-prepared poly (ethylene glycol)-sebacate-poly (ethylene glycol) polymers, coded A, B and C which had different poly (ethyleneglycol) chain lengths. The copolymers were characterized by FTIR and <sup>1</sup>H NMR spectroscopy, which indicated that the reaction of ROP took place and led to producing nine triblock copolymers having new different lactide chain lengths (n = 10, 25 and 50), AL<sub>10</sub>, AL<sub>25</sub>, AL<sub>50</sub>,BL<sub>10</sub>, BL<sub>25</sub>, BL<sub>50</sub>, CL<sub>10</sub>, CL<sub>25</sub>, and CL<sub>50</sub>. Nine polymer networks were also prepared from copolymers with sodium alginate S<sub>1</sub> - S<sub>9</sub> and finally mixed with a solution of hydroxyl ethyl cellulose to form SH<sub>1</sub> - SH<sub>9</sub>.展开更多
文摘6 kinds of IPN's PVA were synthesized by using different monomers of HEMA, MAA and MMA. The effect of adding polysaccharide was also studied. The cell growth on them were determined and compared. The results showed that the cell growth property of the IPN's PVA with hydrophobic monomer of MMA is better, and it can be improved further by adding hyaluronic acid.
文摘Novel triblock copolymers of poly (L-lactide)-poly (ethylene glycol)-sebacate-poly (ethylene glycol)-poly (L-lactide) were synthesized by Ring-Opening Polymerization of different ratios of L-lactide with other three pre-prepared poly (ethylene glycol)-sebacate-poly (ethylene glycol) polymers, coded A, B and C which had different poly (ethyleneglycol) chain lengths. The copolymers were characterized by FTIR and <sup>1</sup>H NMR spectroscopy, which indicated that the reaction of ROP took place and led to producing nine triblock copolymers having new different lactide chain lengths (n = 10, 25 and 50), AL<sub>10</sub>, AL<sub>25</sub>, AL<sub>50</sub>,BL<sub>10</sub>, BL<sub>25</sub>, BL<sub>50</sub>, CL<sub>10</sub>, CL<sub>25</sub>, and CL<sub>50</sub>. Nine polymer networks were also prepared from copolymers with sodium alginate S<sub>1</sub> - S<sub>9</sub> and finally mixed with a solution of hydroxyl ethyl cellulose to form SH<sub>1</sub> - SH<sub>9</sub>.
