Preparation of nanocomposite polypyrrole/cellulose nanocrystals for conductive paper

摘要

The preparation of conductive polypyrrole (PPy) nanocomposite with cellulose nanocrystals (CNC) was carried out by situ polymerization method. The new water dispersible sample (PPy-CNC) was deposited as a thin film on the paper sheet substrate as a conductive paper. The images of field emission scanning electron microscopy (FE-SEM) clearly shw the morphological modulation and the uniformity of the PPy-CNC sample. The electrical properties of conductive paper were studied with various acid doping values. The results show increase in the electrical properties along with the decrease of pH value. Cyclic voltammetry (CV) test was used to examine the stability of redox properties of the neat sample before the doping process. The mechanical properties such as tensile index and elongation at break shows slight decline with decreasing pH. However, elongation at break results for 0.65 pH sample shows different respond to pH value.