We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Solid state <sup>13</sup>C‐NMR study of a plasticized PLA/PHB polymer blend.
- Authors
Baran, Anton; Vrábel, Peter; Olčák, Dušan; Chodák, Ivan
- Abstract
High‐resolution solid‐state 13C nuclear magnetic resonance spectra and 13C spin–lattice relaxation times T1(13C) are used to characterize the structure of a polymer blend prepared from poly(lactic acid) (85 wt %) and poly(3‐hydroxybutyrate) (15 wt %) and the effect of the plasticizer triacetine on the structure and molecular dynamics of the blend. Single‐pulse and cross‐polarization magic angle spinning 13C nuclear magnetic resonance spectra indicate that the nonplasticized polymer blend consists of semicrystalline poly(3‐hydroxybutyrate) domains built into an amorphous poly(lactic acid) matrix. Triacetine supports formation of the crystalline regions within both polymer components in the blend. Spin–lattice relaxation times of carbonyl carbons indicate that the nonplasticized polymer blend consists of noninteracting chains of blended polymers and plasticization of the polymer blend increases the relaxation rate. The glass transition, cold crystallization, and melting processes of the nonplasticized and plasticized blends were also studied using differential scanning calorimetry methods.
- Subjects
POLYMERS -- Environmental aspects; PHYSIOLOGICAL effects of plasticizers; POLYLACTIC acid; CRYSTALLIZATION; NUCLEAR magnetic resonance
- Publication
Journal of Applied Polymer Science, 2018, Vol 135, Issue 21, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.46296