Abstract
AbstractDiblock copolymers composed of poly(ε‐caprolactone) and poly(L‐lactide) were synthesized via sequential living ring‐opening polymerization of ε‐caprolactone and L‐lactide in dichloromethane initiated by Y5(μ‐O)(OiPr)13 (yttrium isopropoxide). A series of diblock copolymers was synthesized with ε‐caprolactone blocks of constant length (DP = 70) and lactide blocks of varying length (DP = 5–80), with polydispersities of 1,18–1,27. Molecular weights were close to theoretical values. 13C NMR spectroscopy shows the absence of transesterification reactions and racemization. The thermal properties of the block copolymers were studied using differential scanning calorimetry. The block copolymers show a certain degree of phase mixing depending on the length of the poly(L‐lactide) blocks. Crystallization of L‐lactide sequences did not occur when the block length consisted of less than 40 L‐lactic acid residues.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
