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Influence of graphene oxide on the static and dynamic mechanical behavior of compatibilized polypropylene nanocomposites

Karavalasu Velusamy Mahesh Kumar, Kasilingam Krishnamurthy, Rathanasamy Rajasekar, Palaniappan Sathish Kumar, Kaushik Pal and Ganesh Chandra Nayak
From the journal Materials Testing
https://doi.org/10.3139/120.111411

Abstract

Graphene oxide (GO) is a carbon-based filler which possesses superior properties for the preparation of polypropylene (PP) nanocomposites. The homogeneous dispersion of nanofiller in a polymer matrix involves a compatibility between base and matrix. This research work analyzes the behavior of GO and its distribution in PP as well as the morphological, physical and mechanical properties of prepared nanocomposites. Since PP is non-polar and GO is polar, there may be a compatibility mismatch between filler and matrix, which may not lead to homogeneous distribution due to poor chemical interaction. Maleic-anhydride grafted polypropylene (MA-g-PP) was selected as a suitable compatibilizer in order to disperse filler into the matrix. X-ray diffraction (XRD) reveals an increase in intergallery spacing which confirms the formation of GO. Scanning electron microscopy (SEM) shows the improved distribution of GO sheets in the PP matrix for the compatibilized system. Tensile strength and modulus of elasticity are improved for the compatibilized PP nanocomposites when compared to the uncompatibilized and to the pure system. Moreover, an enhancement of storage modulus was evidenced for compatibilized nanocomposites. Polar-polar interaction between GO and compatibilizer leads to the homogeneous distribution of filler into the matrix which is clearly responsible for an improvement in the technical properties of polymer.

∗Correspondence Address, Prof. Dr. Rathanasamy Rajasekar, Department of Mechanical Engineering, Kongu Engineering College, Perundurai, Erode, Tamil Nadu, India, E-mail:

Dr. Karavalasu Velusamy Mahesh Kumar, born in 1981, completed his Bachelor's in Production Engineering at the National Institute of Technology, Surat, Gujarat, India, in 2004. He obtained his Master's degree in Manufacturing Engineering at Annamalai University, Tamil Nadu, India, in 2006. He obtained his PhD degree at Anna University, Chennai in 2018 in the field of Polymer Composites. Since 2007, he has been working as an Assistant Professor in the Department of Mechatronics Engineering at Kongu Engineering College, Perundurai, Tamil Nadu, India.

Dr. Kasilingam Krishnamurthy, born in 1968, completed his Bachelor's in Mechanical Engineering at Kongu Engineering College, Tamil Nadu, India, in 1989. He obtained his Master's degree in Production Engineering at the Government College of Technology, Tamil Nadu, India, in 1991. He obtained his PhD degree at Bharathiyar University, Tamil Nadu, India, in 2008 in the field of Mechanical Engineering. Since 1991, he has been working as a Professor and Dean at Kongu Engineering College, Perundurai, Tamil Nadu, India.

Dr. Rathanasamy Rajasekar, born in 1982, obtained his MSc and PhD degrees in 2008 and 2011, respectively, at the Indian Institute of Technology, Kharagpur in the field of Materials Science. He performed post-doctoral research in 2011 to 2012 at the Department of Polymer & Nano Engineering at Chonbuk National University, South Korea. Since 2012, he has been working as a Professor in the Department of Mechanical Engineering at Kongu Engineering College, Perundurai, Tamil Nadu, India.

Palaniappan Sathish Kumar, born in 1991, finished his BEng Degree in Mechanical Engineering at the University College of Engineering, Villupuram (A Constituent College of Anna University, Chennai), Tamil Nadu, India in 2012. He received his MEng from Kongu Engineering College, Perundurai, Tamil Nadu, India in 2014 with distinction in the field of CAD/CAM. Currently, he is pursuing Ph.D. in the Department of Mining Engineering, Indian Institute of Technology (IIT), Kharagpur, West Bengal, India.

Dr. Kaushik Pal, born in 1978, obtained his PhD degree in the year 2009 at the Indian Institute of Technology, Kharagpur in the field of Mining Engineering. He performed post-doctoral research in 2009 to 2011 at the School of Nano and Advanced Materials, Gyeongsang National University, South Korea. From 2011 to 2012, he worked as a faculty member in Mechanical Engineering at the National Institute of Technology, Agartala, India. Since 2012, he has been working as an Associate Professor in the Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand, India.

Dr. Ganesh Chandra Nayak, born in 1984, obtained his Master's degree in 2008 at the Indian Institute of Technology, Kharagpur. He obtained his PhD degree in 2011 at the Indian Institute of Technology, Kharagpur, in the field of polymers. Since 2012, he has been working as an Assistant Professor in the Department of Applied Chemistry, Indian Institute of Technology, Dhanbad, Jharkhand, India.

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Published Online: 2019-09-26
Published in Print: 2019-10-02

© 2019, Carl Hanser Verlag, München

From the journal
Materials Testing
Materials Testing
Volume 61 Issue 10

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