Condensed Tannin-Based Polyurethane as Functional Modifier of PLA-Composites

Danny Eugenio García, Juan Pablo Salazar, Sebastian Riquelme, Nacarid Delgado, Sebastian Paczkowski

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

4 Citas (Scopus)

Resumen

Novel polylactic acid-based composites were prepared for the first time by melt-blending urethanization using bark polyflavonoids, and polymeric methyl diisocyanate. Rheological, morphological, structural, thermal, and mechanical properties were studied. Polymerization between polyflavonoids and isocyanate during the melt-blending was demonstrated by spectroscopy, confocal microscopy, and thermal analysis. Polyflavonoids improved the blend processability and affected the polylactic acid-crystallization, blend-urethanization, and flexural features. Polyphenols act as nucleating agent, and the effect was highly influenced by the polymeric methyl diisocyanate-charge, and the polyflavonoids-content. Low polymeric methyl diisocyanate-loading (10 wt%) degrades the elasticity modulus (E), while the highest polymeric (20 wt%) improved the miscibility between the polylactic acid polymer-matrix and the polyflavonoids.

Idioma originalInglés
Páginas (desde-hasta)709-726
Número de páginas18
PublicaciónPolymer - Plastics Technology and Engineering
Volumen57
N.º8
DOI
EstadoPublicada - 24 may 2018

Áreas temáticas de ASJC Scopus

  • Ciencia de los materiales (miscelánea)
  • Ingeniería química (todo)
  • Polímeros y plásticos
  • Química de los materiales

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