MSA  Vol.9 No.10 , September 2018
Electrical Behaviour and Spherulites Morphology of HDPE/PP Polyblends with HDPE as Base Material
Abstract: Polymer composites of virgin high density poly ethylene (HDPE) and virgin polypropylene (PP) are prepared. PP of weight% of 20, 30 and 50 are reinforced to HDPE in the form of pellets. They are converted into raw polymer sheets using a two roll milling machine. The prepared raw sheets have undergone compression moulding to fabricate polymer sheets to study electrical properties like dielectric strength, surface resistivity and volume resistivity at atmospheric temperature and pressure. Result shows dielectric strength and volume resistivity decreases with addition of PP to HDPE, whereas surface resistivity increases. Crystal growth rate is observed using a cross polarised microscope (PLM). The microscopy results reveal, the PP crystallizes faster than HDPE and the growth rate declines for the polyblend; showing non-uniform and hazy spherulitic structure.
Cite this paper: Sahoo, P. , Murmu, R. , Patra, S. , Dutta, C. and Sutar, H. (2018) Electrical Behaviour and Spherulites Morphology of HDPE/PP Polyblends with HDPE as Base Material. Materials Sciences and Applications, 9, 837-843. doi: 10.4236/msa.2018.910060.

[1]   Teroda, M. and Ohaba, Y. (1983) Energy Transfer Mechanism and Amplified Spontaneous Emission Characteristics of Dye Mixture Solutions. Journal of Applied Physics, 22, 1392-1396.

[2]   Gulrez, S.K.H., Ali Mohsin, M.E., Shaikh, H., Anis, A., Pulose, A.M., Yadav, M.K., Qua, E.H.P. and Al-Zahrani, S.M. (2014) A Review on Electrically Conductive Poly-propylene and Polyethylene. Polymer Composites, 35, 900-914.

[3]   Walker, B.M. and Rader, C.P. (1979) Handbook of Thermoplastic Elastomers. Van Nostrand Reinhold, New York.

[4]   Malik, T.M. and Prudhornme, R.E. (1984) Dielectric Properties of Poly(α-Methyl α-n-Propyl-β-Propiolactone)/Poly(Vinyl Chloride) Blends. Polymer Engineering & Science, 24, 144-152.

[5]   Pathrnanathan, K., Cavaille, J.Y. and Johari, G.P. (1988) Dielectric Relaxations of Microstructurally Different Latex Polymer Blends of Poly(Butyl Acrylate) and Poly(Vinyl Acetate). Polymer, 29, 311-319.

[6]   Maistros, G.M., Block, H., Bucknall, C.B. and Patridge, I.K. (1992) Dielectric Monitoring of Phase Separation during Cure of Blends of Epoxy Resin with Carboxyl-Terminated Poly(Butadiene-Co-Acrylonitrile). Polymer, 33, 4470-4478.

[7]   Pillai, P.K.C., Narula, G.R. and Tripathy, A.K. (1984) Dielectric Properties of Polypropyl-ene/Polycarbonate Polyblends. Polymer Journal, 16, 575-578.

[8]   Radhakrishnan, S. and Saini, D.R. (1994) Structure and Dielectric Properties of Poly(Vinyl Chloride) Thermoplastic Elastomer Blends. Journal of Applied Polymer Science, 52, 1577-1586.

[9]   Gustafsson, A., Salot, R. and Gedde, U.W. (1993) Electrical Degradation of Blends and Laminar Composites of Polyethylene and Polystyrene. Polymer Composites, 14, 421-429.

[10]   Mansour, A.A., Sabagh, S.E.L. and Yehia, A.A. (1994) Dielectric Investigation of SBR-NBR and CR-NBR Blends. Journal of Elastomers & Plastics, 26, 367.

[11]   Elashmawi, I.S., Hakeem, N.A. and Abdelrazek, E.M. (2008) Spectroscopic and Thermal Studies of PS/PVAc Blends. Physica B: Condensed Matter, 403, 3547-3552.

[12]   Ramesh, S., Yahaya, A.H. and Arof, A.K. (2002) Miscibility Studies of PVC Blends (PVC/PMMA and PVC/PEO) Based Polymer Electrolytes. Solid State Ionics, 148, 483-486.

[13]   Rawat, A., Mahavar, H.K., Tanwar, A. and Singh, P.J. (2014) Study of Electrical Properties of Polyvinylpyrrolidone/Polyacrylamide Blend Thin Films. Bulletin of Materials Science, 37, 273-279.

[14]   Mothé, C., Monteiro, D. and Mothé, M. (2016) Dynamic Mechanical and Thermal Behavior Analysis of Composites Based on Polypropylene Recycled with Vegetal Leaves. Materials Sciences and Applications, 7, 349-357.

[15]   Pillai, P.K.C., Gupta, A.K. and Goel, M. (1980) Study of Surface Potential Characteristics of Corona Charged Ethyl Cellulose Layers for Its Relevance in Electrothermography. Macromolecular Chemistry, 181, 951-956.

[16]   Krishnakumar, B., Gupta, R.K., Forster, E.O. and Laghari, J.R. (1986) The Effect of Polypropylene Morphology on AC Breakdown. Annual Report Conference on Electrical Insulation and Electrical Insulation and Dielectric Phenomena, 522.

[17]   Wagner, H. (1974) The Influence of Superstructures on the Electrical Breakdown of Partially Crystalline Polymers. Annual Report Conference on Electrical Insulation and Electrical Insulation and Dielectric Phenomena, 62.

[18]   Kawahigashi, M., Miyashita, Y. and Kato, H. (1989) Chemical Structures of Copolymers and Their Electrical Properties. IEEJ EIM Study Meeting, EIM-89-50, 39. (In Japanese)

[19]   Yamakita, T. (1990) Morphology and Dielectric Breakdown of Blend Polymers. IEEJ EIM Study Meeting, EIM-90-77, 1. (In Japanese)

[20]   Katsunami, K., Ishii, K., Tanaka, Y. and Ohki, Y. (1991) Dielectric Properties of Polymer Blend of Polypropylene and Polyethylene. Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials, Tokyo, 8-12 July 1991, 999-1002.

[21]   Ku, C.C. and Leiens, R. (1987) Eleclrical Properties of Polymers: Chemical Principles. Hanser Publishers, New York.