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Preparation and Swelling Behavior of L-Lactide Interpenetrating Networks
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作者 Zainab J. Sweah Hadi S. Al-Lami Athir M. Haddad 《Open Journal of Organic Polymer Materials》 CAS 2016年第4期119-133,共16页
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
关键词 Lactide Copolymers Ring-Opening polymerization interpenetrating polymer networks (IPN’s) swelling Ratio
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