Journal of Applied Polymer Science
Journal of Applied Polymer Science
4 years ago

Improving the barrier character of poly(lactide)/phenoxy immiscible blend using poly(lactide-co-ɛ-caprolactone) block copolymer as a compatibilizer

Improving the barrier character of poly(lactide)/phenoxy immiscible blend using poly(lactide-co-ɛ-caprolactone) block copolymer as a compatibilizer
Yohana M. Garcia, Ana Chaos, Agustin Etxeberria, Marian Iriarte, Jorge Fernández, Ainara Sangroniz
The improvement of the barrier character of poly(lactide) by the addition of polyhydroxy ether of bisphenol A (Phenoxy) and poly(lactide-co-ɛ-caprolactone) copolymer that acts as a compatibilizer is studied. First, differential scanning calorimetry, Fourier transformed infrared spectroscopy, and scanning electron microscopy show that the addition of the copolymer allows to obtain a miscible ternary system. The permeability of poly(lactide) to water vapor, oxygen, and carbon dioxide is enhanced with the addition of phenoxy but better improvement in its barrier character is obtained with the addition of the compatibilizer. The effects of different factors such as miscibility, glass transition temperature, and crystallinity on the transport properties are analyzed. Several permeability prediction models for heterogeneous systems have been applied obtaining quite good results for water vapor and oxygen permeability. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45396.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45396

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