Nanocomposites membranes from cellulose nanofibers, SiO2 and carboxymethyl cellulose with improved properties

Jianxin Liu, Pan Chen, Dujian Qin, Shuai Jia, Chao Jia, Lei Li, Hongli Bian, Jie Wei, Ziqiang Shao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

The binary nanocomposites blended by carboxymethyl cellulose (CMC) and SiO2 nanoparticles were constructed to prepare the films with superior thermal stability and flame retardant properties. The incorporation of cellulose nanofibers(CNFs) and SiO2 nanoparticles were followed to prepare ternary nanocomposite films exhibiting excellent mechanical properties. The mechanism and chemical reaction of the thermal decomposition for the CMC/SiO2 composite membrane were proposed, which showed that the mass residuals were Na2CO3, SiO2 and Na2SiO3, Na2CO3 when the content of the SiO2 nanoparticles was lowered and higher than 9.6 %, respectively. Compared with the pure CMC, micro combustion calorimeter (MCC) showed that the total heat release (THR) and the peak heat release rate (PHRR) both decreased from 6.4 kJ/g to 5.8 kJ/g, 134 w/g to 27 w/g, respectively. Moreover, mechanical properties of CMC/CNFs/SiO2 membrane showed that the toughness and rigidity of the nanocomposites increased by 56.0 % and 63.0 % on the basis of CMC, respectively.

Original languageEnglish
Article number115818
JournalCarbohydrate Polymers
Volume233
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • Cellulose-nanofibers(CNFs)
  • Mechanical performance
  • SiOnanoparticles
  • Sodium carboxymethyl cellulose(CMC)
  • Thermal decomposition process

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Liu, J., Chen, P., Qin, D., Jia, S., Jia, C., Li, L., Bian, H., Wei, J., & Shao, Z. (2020). Nanocomposites membranes from cellulose nanofibers, SiO2 and carboxymethyl cellulose with improved properties. Carbohydrate Polymers, 233, Article 115818. https://doi.org/10.1016/j.carbpol.2019.115818