Synthesis and characterization of biodegradable triblock copolymers from L, D-lactides and poly(ethylene carbonate)

To develop carbon dioxide (CO 2 )-reducible polymeric materials, block copolymers (PLA-PEC-PLA) of CO 2 -reducible polymers, poly(lactide) (PLA) and poly(ethylene carbonate) (PEC) were synthesized by the ring-opening polymerization of lactide in the presence of PEC diol using stannous octoate. Diffe...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2016-09, Vol.636 (1), p.122-127
Main Authors: Kim, Yeong Woo, Lee, Hak Yong, Kim, Eun Young, Choi, Hee Rak, Lim, Kwon Taek, Lee, Won-Ki
Format: Article
Language:English
Subjects:
Biodegradation
Block copolymers
Carbon dioxide
Carbonates
Chemical synthesis
Contact angle
Copolymers
Degradation
Diols
Hydrophilicity
poly(ethylene carbonate)
poly(lactide)
Polyethylene
Polymerization
Synthesis (chemistry)
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Summary:To develop carbon dioxide (CO 2 )-reducible polymeric materials, block copolymers (PLA-PEC-PLA) of CO 2 -reducible polymers, poly(lactide) (PLA) and poly(ethylene carbonate) (PEC) were synthesized by the ring-opening polymerization of lactide in the presence of PEC diol using stannous octoate. Differential scanning calorimetry and contact angle measurements showed that the incorporation of the PEC block decrease the crystallinity of PLA and increases the hydrophilicity and flexibility due to its compatibility. The enzymatic degradation in Tris-HCl buffer containing proteinase K showed that the degradation rate of L-PLA-PEC-L-PLA was faster than that of L-PLA due to the decreased crystallization and increased hydrophilicity after copolymerization as well as degradation of PEC.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2016.1201392