Ecofriendly E-Nose Based in PLA and Only 0.3 wt%of CNTs  

作　　者：Laura Ribba Jonathan Cimadoro Silvia Goyanes 

机构地区：[1]Universidad de Buenos Aires,Facultad de Ciencias Exactas y Naturales,Departamento de Física,Laboratorio de Polímeros y Materiales Compuestos(LP&MC),Instituto de Física de Buenos Aires(IFIBA-CONICET),Ciudad Universitaria(1428),Ciudad Autónoma de Buenos Aires,Argentina

出　　处：《Journal of Renewable Materials》2019年第4期355-363,共9页可再生材料杂志（英文）

摘　　要：In this work,conductive polymer nanocomposites were developed based on a biodegradable and biobased polymer(poly(lactic acid)),with the incorporation of only 0.3 wt%of carbon nanotubes(CNTs)to be used as volatile solvent sensors.The correct dispersion of the nanofiller was achieved thanks to a CNT non-covalent modification with an azo-dye(disperse orange 3)which allowed to reach the percolation for electric conduction in values as low as 0.3 wt%.The chemo-resistive properties of the developed sensors were investigated by exposure to organic vapors(ethanol,tetrahydrofuran and toluene)and water vapor,showing good selectivity.In addition,considering the manipulation to which the sensor will be exposed,wear resistance was characterized,finding that the incorporation of CNTs produced an increase in more than a 50%.

关 键 词：Poly(lactic acid) carbon nanotubes sensor CPC organic solvent vapor DO3 

分 类 号：TB3[一般工业技术—材料科学与工程]