Nanocomposites formation through blending partially hydrolyzed cellulose and poly(lactic acid)

Boor Singh Lalia, Parakalan Krishnamachari, Raed Hashaikeh

Research output: Contribution to journalArticle

Abstract

A new process to make polymer composites with nanocrsytalline cellulose as reinforcing fillers was developed. Nanocomposites of poly(lactic acid) (PLA) were prepared via mixing cellulose soaked in 64% sulfuric acid with a solution of PLA dissolved in tetrahydrofuran (THF). The nanocomposites precipitated immediately upon mixing. The nanocomposites exhibited improved thermal and dynamic mechanical properties, with as much as three folds increase in storage modulus. TGA data revealed the resilient nature of the nanocomposites, having a residual weight of about 5% at 400 °C. SEM images revealed a highly porous morphology which can be ideal for tissue engineering applications. It was observed that the porosity of the PLA nanocomposites increased with the contents of cellulose. XRD data indicated enhanced crystallinity of PLA in the composite.

Original languageEnglish (US)
Pages (from-to)127-134
Number of pages8
JournalJournal of Biobased Materials and Bioenergy
Volume7
Issue number1
DOIs
StatePublished - Feb 1 2013

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Keywords

  • Acid hydrolysis
  • Dynamic mechanical analysis
  • Nanocomposite
  • Nanocrystalline cellulose
  • Poly(lactic acid)

ASJC Scopus subject areas

  • Bioengineering
  • Biomaterials
  • Renewable Energy, Sustainability and the Environment

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