Effect of ultrasonic irradiation on the microstructure and the electric property of PP/CPP/MWNT composites. Issue 3 (25th July 2012)

• Record Type: Journal Article
• Authors: Yang, Lin; Zhang, Zhiye; Wang, Xinlong; Chen, Jinyao; Li, Huilin
• Is Part Of: Journal of applied polymer science. Volume 128:Issue 3(2013:May 05)
• Page Start: 1510
• Page End: 1520
• Publication Date: 2012-07-25
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.38297
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Poly(propylene) (PP)/chlorinated PP (CPP)/multiwalled carbon nanotube (MWNT) composites are prepared via melting blend with a MWNT masterbatch obtained by a solution process under ultrasonic irradiation. The effects of ultrasonic irradiation on the microstructure and the electric properties of the PP/CPP/MWNT composites are systematically investigated through a combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM), wide‐angle X‐ray diffraction (WAXD), and rheological measurements. Ultrasonic irradiation can remarkably decrease the volume resistivity of the PP/CPP/MWNT composites. The results of SEM and TEM show that the ultrasonic irradiation is beneficial to the dispersion of MWNTs in the PP/CPP/MWNT composites and the exfoliation of the MWNT agglomerates. When the MWNT content is more than 3.0%, ultrasonic irradiation can evidently increase the percent crystallinity of the PP/CPP/MWNT composites. The introduction of ultrasonic irradiation can increase the elastic modulus (<italic>G</italic>′), viscous modulus (<italic>G</italic>″), and complex viscosity (η*) of the PP/CPP/MWNT composites at low frequency. Ultrasonic irradiation is also shown to improve the interfacial adhesion of MWNT and the interaction between the PP matrix and MWNT. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013</p> </abstract>