纤维素
木质素
纳米纤维
材料科学
结晶度
化学工程
热稳定性
色散(光学)
复合数
碳纳米管
复合材料
溶剂
极限抗拉强度
化学
有机化学
物理
光学
工程类
作者
Haoxin Li,Jiakang Liang,Fangong Kong,Manni Ren,Abu ElGasim Ahmed Yagoub Mohammed,Chi Zhou
标识
DOI:10.1016/j.indcrop.2023.117737
摘要
A deep eutectic solvent (DES) was employed to purify cellulose by depolymerizing agricultural waste walnut shells (WS) at 90 ℃ from 1.5 to 3.0 h. The pretreatment achieved an 88.57% delignification rate and yielded 33.62% cellulose solids (CS), with 77.63% cellulose and 13.11% lignin contained in CS. The DES pretreatment exposed functional groups on the surface of cellulose and resulted in a 24.7% increase in crystallinity. Suspension with a homogeneous distribution of lignin-containing cellulose nanofibers (LCNF) was made by ultrasonic dispersing (650 W, 30 min), and the average length of 1406 nm, the ζ-potential of − 17.65 mV. Higher lignin content led to cross-linking effect which produced a heightened degree of entanglement of LCNF while increasing the UV-shielding property and thermal stability. Additionally, LCNF stabilized the dispersion of multi-walled carbon nanotubes (MWCNT) in water, and served as a carrier for MWCNT conductive networks, which showed a tensile strength of 63.86 MPa and a conductivity of 15.63 S/m. The composite film exhibited potential applications in real-time monitoring of pressure sensing.
科研通智能强力驱动
Strongly Powered by AbleSci AI