Application of melt-blown Poly(lactic acid) fibres in self-reinforced composites

Dániel Vadas, Dávid Kmetykó, G. Marosi, Katalin Bocz

Research output: Article

2 Citations (Scopus)

Abstract

The aim of our research was to produce poly(lactic acid) (PLA) fibres with diameters in the micrometer size range, serving as the reinforcing phase in self-reinforced (SR) PLA composites. Nonwoven PLA mats were manufactured by solvent-free melt-blowing technology. Three types of PLA differing in D-lactide content were processed with a productivity as high as 36 g/h. The crystallinity of the PLA microfibres was enhanced by thermal annealing. A 2-3-fold increase in the degree of crystallinity was obtained, as measured by differential scanning calorimetry (DSC). Fibre diameters between 2-14 μm were revealed by scanning electron microscopy (SEM). Static tensile tests were performed on the nonwoven mats, showing the reduced moduli of the annealed fibres due the amorphous relaxation. The PLA mats were processed via the hot compaction technique and formed into SR-PLA composites. The morphological and mechanical properties of the obtained microstructural composites were comprehensively studied. Composites prepared from annealed, thermally more stable PLA nonwoven mats showed superior mechanical properties; the tensile strength improved by 47% due to the higher residual fibre content.

Original languageEnglish
Article number766
JournalPolymers
Volume10
Issue number7
DOIs
Publication statusPublished - júl. 12 2018

Fingerprint

Lactic acid
Fibers
Composite materials
Mechanical properties
Blow molding
Differential scanning calorimetry
Compaction
Tensile strength
Productivity
Annealing
Scanning electron microscopy
poly(lactic acid)

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

Cite this

Application of melt-blown Poly(lactic acid) fibres in self-reinforced composites. / Vadas, Dániel; Kmetykó, Dávid; Marosi, G.; Bocz, Katalin.

In: Polymers, Vol. 10, No. 7, 766, 12.07.2018.

Research output: Article

Vadas, Dániel ; Kmetykó, Dávid ; Marosi, G. ; Bocz, Katalin. / Application of melt-blown Poly(lactic acid) fibres in self-reinforced composites. In: Polymers. 2018 ; Vol. 10, No. 7.
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