TITLE:
Preparation and Swelling Behavior of L-Lactide Interpenetrating Networks
AUTHORS:
Zainab J. Sweah, Hadi S. Al-Lami, Athir M. Haddad
KEYWORDS:
Lactide Copolymers, Ring-Opening Polymerization, Interpenetrating Polymer Networks (IPN’s), Swelling Ratio
JOURNAL NAME:
Open Journal of Organic Polymer Materials,
Vol.6 No.4,
October
31,
2016
ABSTRACT: 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 1H 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), AL10, AL25, AL50,BL10,
BL25, BL50, CL10, CL25, and CL50.
Nine polymer networks were also prepared from copolymers with sodium alginate S1 - S9 and finally mixed with a
solution of hydroxyl ethyl cellulose to form SH1 - SH9.