Poly(lactic acid)/lignin blends prepared with the Pickering emulsion template method

Xiang Li, Nóra Hegyesi, Yunchong Zhang, Zhiping Mao, Xueling Feng, Bijia Wang, Béla Pukánszky, Xiaofeng Sui

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this work, the Pickering emulsion template method was used to introduce lignin nanoparticles into poly(lactic acid) (PLA) with improved dispersion. The effect of lignin as the stabilizer of Pickering emulsions was studied in this paper, including the thermal, rheological and mechanical properties of the blends. The PLA/lignin films had reduced light transmission in the UV light region, and Young's modulus of PLA/lignin blends increased, while their tensile strength and elongation-at-break decreased as compared to neat PLA film. The introduction of lignin improved crystallinity of PLA from 7.5% to over 15%, and increased its decomposition temperature by about 10 °C. The lignin in the blends prepared using the Pickering emulsion template approach had much larger load bearing capacity than the dispersed lignin particles in the usual melt blended material. All the results indicated that the Pickering emulsion template method improves the dispersion of lignin (over 5.0 wt%) in PLA and improves UV protection, crystallinity, decomposition temperature and Young's modulus of PLA.

Original languageEnglish
Pages (from-to)378-384
Number of pages7
JournalEuropean Polymer Journal
Volume110
DOIs
Publication statusPublished - Jan 2019

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Keywords

  • Decomposition temperature
  • Lignin nanoparticles
  • Reinforcement
  • Rheology

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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