Journal of Polymer Research

, 25:54 | Cite as

Preparation and characterization of poly(ethylene carbonate)/poly(lactic acid) blends

  • N. A. Ramlee
  • Y. Tominaga
Part of the following topical collections:
  1. Topical Collection on Bio-Based Polymers


Poly(ethylene carbonate)/poly(lactic acid) blends were successfully prepared by means of a solution film-casting method, and their physicochemical properties were investigated. PEC/PLA blends exhibit partial miscibility and are characterized by the interaction of the ester and carbonic ester groups. One such interaction is between partial charges in –C–O– in –O–C=O of PLA and the carbonyl –C=O of PEC. Another is between –C–O– in –O–C=O of PLA and –C–O– in –CH2–O– of PEC. The value of Tg varies by more than 10 °C across the blends. PEC does not significantly influence the melting temperature of neat PLA, but non-spherical spherulites are formed in PEC-rich blends, whereas the spherulites are spherical with an average size of 30 μm in PLA-rich blends. Crystallization of PLA is influenced by the addition of flexible PEC and by the proportion of PLA in the blends. Interestingly, addition of at least 10 wt% PLA increased Tg, with a crystallinity, Xc of 47% and better thermal degradation properties, with the temperature at 5 wt% weight loss (Td5) more than 30 °C higher than for neat PEC.


Poly(ethylene carbonate) Poly(lactic acid) Polymer blend Biodegradable 

Supplementary material

10965_2018_1451_MOESM1_ESM.docx (24 kb)
ESM 1 (DOCX 24.2 kb)
10965_2018_1451_MOESM2_ESM.docx (542 kb)
ESM 2 (DOCX 541 kb)


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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Graduate School of Bio-Applications and Systems EngineeringTokyo University of Agriculture and TechnologyTokyoJapan
  2. 2.Faculty of Chemical EngineeringUniversiti Teknologi MARAShah AlamMalaysia

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