Studies on Polyaniline Nanostructures Prepared with Surfactant En-capped Initiators as Infrared Cutting Materials

• Main Authors: Yu-Wei Cheng, 鄭有為
• Other Authors: Ko-Shan Ho
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/5hpqwn

碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系博碩士班 === 102 === Polyaniline owns favorable properties of easy preparation, excellent chemical and environmental stability, and tunable conductivity by protonation or deprotonation. However, it also owns the intractable, poor mechanical properties, and low processability which have hindered its industrial applications. In order to get a better solubility, polyaniline nanostructures were prepared by self-assembly emulsion polymerization using cetyltrimethyl ammonium bromide en-capped potassium persulfate as the surfactant associated initiator which can form a soft template. After adding aniline monomer, a well-defined polyaniline nanostructures was obtained. First, we used Fourier transform infrared spectroscopy (FT-IR) to characterize the functional groups on the polyaniline nanostructures. The crystalline structure of the polyaniline nanostructures were determined by x-ray diffraction patterns (XRD). And then, the nano-size and morphology of polyanilines were examined by transmission electron microscopy (TEM) and scanning electron microscope (SEM) techniques. Finally, the conductivity is obtained from a four-probe conductivity meter. In this study, polyaniline nanostructures were prepared, which have the IR cutting result due to improved hole delocalization, conjugation and dispersion in the NIR region. Furthermore, the UV-Vis-IR measurements revealed the transmittance of PANI/MP45/Toluene = 2/3/40 film reaches 65% in visible region, and its IR cutting percentage is more than 50%.