INITIAL STUDY OF FABRICATION AND CHARACTERIZATION CONDUCTIVE FABRICS MWCNT (MULTIWALLED CARBON NANOTUBE) BASED

• Main Author: Zulfikar, Ainun
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/45142
• Institution: Institut Teknologi Bandung

Conductive Fabrics (CF) will be applied for an advance electronic devices. Conventional materials has limitation in advance electronic device. Conductive fabrics will be a solution material to apllied in wearable devices. On the other hand, electronic device for imlpant need a brand new materials to replace the conventional. Nanotechnology on textile is a hot topic for researcher to combine the properties which have a big potential for many application in the future. MWCNT on textile is a fit filler for conductive fabrics fabrication. MWCNT has promising electrical properties as a conductive filler. Cotton is a natural fiber for many application. Beside that, in this research natural dispersant is used to develop “green” conductive fabrics. Fabrication of conductive fabrics is started with conductive supernatant ink making. After that the fabrics dipped onto the ink and dried with oven. Concentration of MWCNT is 0,1 ; 0,2 ; and 0,3 % (w/w). The green dispersant is Carboxy Methyl Cellulose (CMC) and Gum Arabic (GA) which usually used at pharmacy, food and cosmetics industry as emulsifier. This research using two type of MWCNT. The pristine MWCNT and MWCNT which is acid treated with 68% nitric acid for 8 hours. MWCNT dispersed in water with dispersant CMC 0,5% or GA 5%. The dispersion method of MWCNT is using ultrasonication. Ultrasonication time optimized at 8+1 minutes. After that ink sentifuged at 8000 RPM for 20 minutes to get the stable supernatant. MWCNT concentration measured with calibration curve appropriate with Lambert-Beer theory using UV – Vis Spektrometer. Furthermore, cotton fabrics (as received) dipped into ink for 3 seconds (perfectly dipped) then dried in oven at 70 celcius for 20 minutes. Dipping process repeated 5 times to maximize loading of MWCNT on cotton. Next process is washing the conductive fabrics to reduce unused dispersant in the fabrics. Sheet resistance measured with four point probe method. The result, cotton – MWCNT conductive fabrics with GA dispersant posess 30 – 100 times higher sheet resistance than CMC conductive fabrics. Acid treated MWCNT also produce higher sheet resistace fabrics compared to the pristine MWCNT. Five times repeated dipping process rising MWCNT amount loading on cotton and decreasing sheet resistance. Conventional dan vacuum washing process effective on GA conductive fabrics cotton – MWCNT. The result, sheet resistance on GA cotton – MWCNT conductive fabrics decrease almost 200 times. Washing effect didn’t work good at CMC cotton – MWCNT conductive fabrics. The sheet resistance increase after washing process. After all, conductive fabrics fabricatiom posess a big potential to be an alternative materials on many electronic devices.