Effects of chlorinated polypropylene on the hydrogen‐bond and electric property of polypropylene/chlorinated polypropylene/polyaniline composites: FTIR analysis

In this article, the volume resistivity of polypropylene (PP)/chlorinated polypropylene (CPP)/polyaniline (PANI) composites was detected. The results show that thevolume resistivity of PP/CPP/PANI composites decreases with increasing CPP content, and there exists a minimum volume resistivity. The relationship between volume resistivity of the PP/CPP/PANI composites and CPP content can be explained by Fourier‐transform infrared spectra (FTIR). Effects of CPP on the formation of the intermolecular and innermolecular hydrogen‐bond in the PP/CPP/PANI composites were carefully investigated by FTIR. An iterative least‐squares computer program was adopted to obtain the best FTIR fit curves of the PP/CPP/PANI composites by varying the wavenumber (ν), width at half‐height (w1/2), and area (S) of several bands. The obtained semiquantitative results illuminate that the intermolecular and innermolecular H‐bonded interaction of the PANI‐DBSA is weakened by the introduction of CPP; the interactional strength between PANI‐DBSA and CPP increases with increasing CPP content, and there exists a maximum, which is favorable to disperse well PANI‐DBSA in PP/CPP/PANI composites and improve the conductive property of the PP/CPP/PANI composites. POLYM. ENG. SCI., 2009.