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Oxidation of Polycaprolactone to Induce Compatibility with Other Degradable Polyesters by Marcos A. Sabino is a Materials Science article available to read on EtoBox.
What is Oxidation of Polycaprolactone to Induce Compatibility with Other Degradable Polyesters about?
Chemical modification of poly(3-caprolactone) PCL by oxidation with potassium permanganate in solution was investigated. According to the data obtained from Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance 1 H NMR, after the oxidation reactions the PCL chains exhibited new functional groups (vinyl and hydroxyl) and possible intermolecular recombination, producing an oxidizedpolycaprolactone (PCL-OX). Solution viscometry indicated that degradation also occurred during the oxidation reactions (w30% drop in viscosity average molecular weight was detected). Differential scanning calorimetry (DSC) also indicated that PCL was chemically modified and degraded. The successive self-nucleation/annealing (SSA) treatment confirmed that a reduction (or interruption) in linear crystallizable sequences occurred. The immiscibility of blends of PCL with other degradable polyesters, such as poly( p-dioxanone) PPDX (PCL/PPDX 90:10 w/ w), was shown by the invariability of the relevant thermal transitions as determined by DSC and FT-IR and NMR analysis. However, the blend prepared with oxidized PCL (PCL-OX/PPDX, in the same composition range) did not display signs of therm
Who reads Oxidation of Polycaprolactone to Induce Compatibility with Other Degradable Polyesters?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Marcos A. Sabino
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0141-3910)
- Published
- 2007
- Language
- EN
- Field
- Materials Science (Physical Sciences)