Multi-walled carbon nanotubes covalently bonded Cellulose Composite for Chemical Vapor Sensor

被引：0

作者：

Yun, Sungryul ^{[1
]}

Yang, Sang Yeol ^{[1
]}

Kim, Jaehwan ^{[1
]}

机构：

[1] Inha Univ, Creat Res Ctr EAPap Actuator, Dept Mech Engn, Inchon 402751, South Korea

来源：

NANOSENSORS, BIOSENSORS, AND INFO-TECH SENSORS AND SYSTEMS 2010 | 2010年 / 7646卷

关键词：

Cellulose; Multi-walled carbon nanotubes; Composite; Micro-fabrication; Chemical vapor sensor; ELECTROACTIVE PAPER;

D O I：

10.1117/12.847481

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A cellulose solution was prepared by dissolving cotton pulp in LiCl/ N,N-Dimethylacetamide (DMAc) solution, and functionalized multi-walled carbon nanotubes (MWCNTs) were reacted with N, N-Carbonyldiimidazoles to obtain MWCNTs-imidazolides. By acylation of cellulose with MWCNTs-imidazolides, MWCNTs were covalently bonded with cellulose chains. Using the product, MWCNTs covalently bonded cellulose composite (M/C) composite was fabricated with mechanical stretching to align MWCNTs with cellulose. Finally, inter-digital comb electrode was formed on the composite via lift-off process. Chemo-electrical properties of the M/C composite in response of absorption of the volatile vapors corresponding to 1-propanol, 1-butanol, methanol and ethanol were investigated. Due to sensitive and reversible expansion/contraction of the M/C composite matrix in response to absorption of each analyte, the M/C composite showed fast and reversible change in chemo-electrical property. The ranking of relative resistance response of the composite was methanol < ethanol < 1-propanol < 1-butanol.

引用

页数：6