Migration and hydrolysis of hydrophobic polylactide plasticizer

Biomacromolecules
Anders HöglundAnn-Christine Albertsson

Abstract

Hydrophobic plasticizer protects polylactide (PLA) against hydrolytic degradation but still migrates to aging medium and there undergoes further hydrolysis contributing to the spectrum of degradation products. PLA plasticized with hydrophobic acetyl tributyl citrate (ATC) plasticizer showed a slower degradation rate compared with pure PLA because of the increased hydrophobicity of the material. The enhanced bulk hydrophobicity also overcame the degradation enhancing effect of hydrophilic surface grafting. In addition to plasticization with ATC, some of the samples were also surface grafted with acrylic acid. The materials were subjected to hydrolysis at 37 and 60 degrees C for up to 364 days to compare the effect of hydrophobic and hydrophilic bulk and surface modifications. Although considered insoluble in water, the plasticizer was detected in the water solutions immediately upon immersion of the materials, and the relative abundance of the ATC degradation products increased with hydrolysis time.

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Citations

Feb 25, 2011·Biomacromolecules·Karin OdeliusAnn-Christine Albertsson
Nov 11, 2011·International Journal of Molecular Sciences·Theodore BeslikasDimitrios N Bikiaris
Oct 24, 2013·Journal of Materials Science. Materials in Medicine·Yu-Na LeiLin-Xi Hou
Apr 21, 2016·International Journal of Biological Macromolecules·Ravi Babu ValapaVimal Katiyar
Nov 14, 2014·Critical Reviews in Analytical Chemistry·A GhaffarSj van der Wal
May 24, 2016·Biomacromolecules·Han Yang, Theo G M van de Ven
Apr 19, 2016·Journal of Biomedical Materials Research. Part a·Mohammed A YassinKamal Mustafa
Jul 24, 2020·Biomolecules·Wenxiang XuanMinna Hakkarainen
Mar 6, 2010·Biomacromolecules·Sofia Regnell AnderssonAnn-Christine Albertsson
May 8, 2021·International Journal of Biological Macromolecules·Adriana KovalcikZdenko Spitalsky
Nov 18, 2010·Biomacromolecules·Sofia Regnell AnderssonAnn-Christine Albertsson
Nov 28, 2013·Biomacromolecules·Veluska AriasAnn-Christine Albertsson
Mar 8, 2012·Biomacromolecules·Sofia Regnell AnderssonAnn-Christine Albertsson

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