TY - JOUR
T1 - Nanocomposites membranes from cellulose nanofibers, SiO2 and carboxymethyl cellulose with improved properties
AU - Liu, Jianxin
AU - Chen, Pan
AU - Qin, Dujian
AU - Jia, Shuai
AU - Jia, Chao
AU - Li, Lei
AU - Bian, Hongli
AU - Wei, Jie
AU - Shao, Ziqiang
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/4/1
Y1 - 2020/4/1
N2 - 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.
AB - 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.
KW - Cellulose-nanofibers(CNFs)
KW - Mechanical performance
KW - SiOnanoparticles
KW - Sodium carboxymethyl cellulose(CMC)
KW - Thermal decomposition process
UR - http://www.scopus.com/inward/record.url?scp=85077663011&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2019.115818
DO - 10.1016/j.carbpol.2019.115818
M3 - Article
C2 - 32059879
AN - SCOPUS:85077663011
SN - 0144-8617
VL - 233
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
M1 - 115818
ER -