Mechanical properties and in vitro degradation behavior of additively manufactured phosphate glass particles/fibers reinforced polylactide

Lizhe He, Jiahui Zhong, Chenkai Zhu, Xiaoling Liu

Research output: Journal PublicationArticlepeer-review

3 Citations (Scopus)
3 Downloads (Pure)

Abstract

Phosphate glass/polylactide (PG/PLA) composites were additively manufactured via fused deposition modeling. The incorporation of 10 wt % PG particles improved the flexural modulus of composites by ~14% (3.53 GPa) but led to 5% reduction in flexural strength (92.4 MPa). The trend was more pronounced as the particle loading doubled. Comparing to a particulate composite of the same weight fraction, milled PG fibers (PGFs) reinforcement led to more effectively improved flexural modulus (~30%, 4.10 GPa). After 28 days of in vitro degradation in phosphate buffered saline, the particulate composites lost more than 30% of their initial mechanical properties, in contrast to less than 10% reduction of strength/modulus reported from fiber reinforced composites. The additively manufactured PG/PLA matrix composites have potential for application as customized bone fixation plates to repair the fractures under modest load-bearing applications.

Original languageEnglish
Article number48171
JournalJournal of Applied Polymer Science
Volume136
Issue number44
DOIs
Publication statusPublished - 20 Nov 2019

Keywords

  • additive manufacturing
  • biodegradable composites
  • mechanical properties
  • phosphate-based glass
  • polylactide

ASJC Scopus subject areas

  • Chemistry (all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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