Rapidly growing vegetables as new sources for lignocellulose nanofibre isolation: Physicochemical, thermal and rheological characterisation

Eduardo Espinosa, Rafael Sánchez, Zoilo González, Juan Domínguez-Robles, Begoña Ferrari, Alejandro Rodríguez*

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Rapidly growing vegetables could be an abundant and cheap sources of lignocellulose biomass for lignocellulose nanofibre (LCNF) production. The aim of this work is to study the feasibility of using Chamaecytisus proliferus and Leucaena leucocephala for LCNF isolation by mechanical, enzymatic and TEMPO-mediated oxidation pre-treatments. Characterisation of the nanofibres shows that there are significant differences in the production of LCNF depending on the raw material and pre-treatment used. XRD and FTIR analysis show that homogenisation has a strong negative effect on the crystallinity index; however, the higher lignin content of tagasaste (10%) protects the fibre, causing a smaller decrease in crystallinity. The thermal stability of LCNF is also affected by the high lignin content in the case of tagasaste, which exhibited maximum degradation temperatures of 340–315 °C, that were higher than those for leucaena (330–310 °C). A strong shear thinning behaviour was observed in most of the LCNF, which revealed a great degree of interconnectivity in the gel like-network.

Original languageEnglish
Pages (from-to)27-37
JournalCarbohydrate Polymers
Volume175
Early online date23 Jul 2017
DOIs
Publication statusPublished - 01 Nov 2017
Externally publishedYes

Keywords

  • Characterization
  • Leucaena
  • Lignocellulose nanofibers
  • Rapid growth vegetables
  • Tagasaste

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Rapidly growing vegetables as new sources for lignocellulose nanofibre isolation: Physicochemical, thermal and rheological characterisation'. Together they form a unique fingerprint.

  • Cite this