Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

High thermodynamic stability study of PLA/LCNF composite

High thermodynamic stability study of PLA/LCNF composite Thermal degradation behaviors of one composite constituted by poly(lactic acid) (PLA), cellulose nanofibrils (CNF), and lignin–cellulose nanofibrils (LCNF) in a nitrogen atmosphere were studied using thermogravimetric analysis (TGA). It was found that the thermal degradation stability of the PLA/LCNF composite was improved when compared to PLA and PLA/CNF. The Flynn–Wall–Ozawa method was used to determine the apparent activation energy of the composite samples which was based on a set of TGA data obtained at different heating rates. It was shown that the conversion functions calculated by means of the Coats–Redfern method depend on a set of kinetic models, which could be concluded that using the model-fitting methods couldn’t reveal the complexity of the thermal degradation process and the isokinetic relationship method was used to estimate a model-independent pre-exponential factor (ln A) corresponding to a given degree of conversion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Thermoplastic Composite Materials SAGE

High thermodynamic stability study of PLA/LCNF composite

Download PDF
14 pages

Loading next page...
 
/lp/sage/high-thermodynamic-stability-study-of-pla-lcnf-composite-8MKwoigaR0
Publisher
SAGE
Copyright
© The Author(s) 2018
ISSN
0892-7057
eISSN
1530-7980
DOI
10.1177/0892705718779120
Publisher site
See Article on Publisher Site

Abstract

Thermal degradation behaviors of one composite constituted by poly(lactic acid) (PLA), cellulose nanofibrils (CNF), and lignin–cellulose nanofibrils (LCNF) in a nitrogen atmosphere were studied using thermogravimetric analysis (TGA). It was found that the thermal degradation stability of the PLA/LCNF composite was improved when compared to PLA and PLA/CNF. The Flynn–Wall–Ozawa method was used to determine the apparent activation energy of the composite samples which was based on a set of TGA data obtained at different heating rates. It was shown that the conversion functions calculated by means of the Coats–Redfern method depend on a set of kinetic models, which could be concluded that using the model-fitting methods couldn’t reveal the complexity of the thermal degradation process and the isokinetic relationship method was used to estimate a model-independent pre-exponential factor (ln A) corresponding to a given degree of conversion.

Journal

Journal of Thermoplastic Composite Materials – SAGE

Published: Aug 1, 2019

There are no references for this article.