A study on thermal behaviour of HDPE/CaCO3 nanocomposites

• Autorzy: Zebarjad S. M. , Sajjadi S. A. , Tahani M. , Lazzeri A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In order to improve physical and mechanical properties of high density polyethylene (HDPE) addition of filler, rigid particles and even elastomer to HDPE is very common. One of the most important filler which is added to it is nano size calcium carbonate (CaCO3). To avoid agglomeration of nano size calcium carbonate addition of fatty acids such as stearic acid is very common. Design/methodology/approach: In the current study, nanocomposites with 10vol% nano size calcium carbonate were prepared. To investigate the role of stearic acid on nanocomposite behaviour, nanoparticles were coated at different stearic acid content. Thermal behaviour of high density polyethylene and its nanocomposites reinforced with both uncoated and coated calcium carbonate were investigated. For this purpose differential scanning calorimetry (DSC) test was used. Findings: The results of DSC test showed that addition of 10vol% calcium carbonate to HDPE causes a slightly rise in its melting point but stearic acid content has no significant effect on the melting temperature of HDPE nanocomposites. Research limitations/implications: Agglomeration of nanosized calcium carbonate during sample preparation was the major research limitation. Originality/value: Crystallization temperature of HDPE with addition of 10vol% calcium carbonate increases, while addition of stearic acid causes to decrease it. Both stearic acid content and 10vol% calcium carbonate have no significant effect on crystallinity index of HDPE.

Słowa kluczowe

EN

composite; HDPE; CaCO3; thermal behaviour

PL

kompozyt; HDPE; CaCO3; oddziaływania cieplne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 173--176
• Opis fizyczny: Bibliogr. 14 poz., tab., wykr.

Twórcy

autor

Zebarjad S. M.

• Department of Materials Engineering, Engineering Faculty, Ferdowsi University, P. O. Box 91775-1111, Mashhad, Iran

autor

Sajjadi S. A.

• Department of Materials Engineering, Engineering Faculty, Ferdowsi University, P. O. Box 91775-1111, Mashhad, Iran

autor

Tahani M.

• Department of Mechanical Engineering, Engineering Faculty, Ferdowsi University, P. O. Box 91775-1111, Mashhad, Iran

autor

Lazzeri A.

• Center for Materials Engineering, University of Pisa, Via Diotisalvi2, 56126Pisa, Italy

Bibliografia

• [1] W. Woishnis, Polypropylene (1998) PDI Publisher: New York.
• [2] R. Herzig,, W.E. Baker, Correlations Between Image-Analysed Morphology and Mechanical Properties of Calcium carbonate-Filled PP. Journal of Materials Science 28 (1993) 6531.
• [3] B. Wunderlich, Macromolecular Physics (1980) Academic Press, New York.
• [4] K. Premphet, P. Horanont, Phase Structure and Property Relationship in Ternary PP/Elastomer/Filler Composites. Journal of Applied Polymer Science 74 (1999) 3445.
• [5] Z. Bartczak, A.S. Argon, R.E. Cohen, T. Kowalewski, The morphology and orientation of PE in films of sub-micron thickness crystallized in contact with calcite and rubber substrates. Polymer 40 (1999) 2367.
• [6] S. Wu, A. Generalized Criterion for Rubber Toughening: The Critical Matrix Ligament Thickness Polymer 26 (1985) 1855.
• [7] R.N. Rothon, Editor. Particulate-Filled Polymer Composites (1995) Harlow: Longman Scientific and Technical.
• [8] B. Pukanszky, F. Tudos, J. Jancar, J. Kolarik, The Possible Mechanisms of Polymer-Filler Interaction in PP/CaCO3 Composites, Journal of Matererial Science Letters 8 (1989) 1040.
• [9] A. Khare and A. Mitra, Effect of CaCO3 on the Crystallization Behavior of PP, Journal of Matererial Science 31 (1996) 569.
• [10] Y.C. Lee and R.S. Porter, Cavitation during Isothermal Crystallization of Isotactic Polypropylene, Polymer Engineering Science 26 (1986) 633.
• [11] S.M. Zebarjad, M. Tahani , S.A. Sajjadi, Influence of filler particles on deformation and fracture mechanism of isotactic polypropylene Journal of Materials Processing Technology, 155-156 (2004) 1459.
• [12] A.L.F. de Moura Giraldi, R. Cardoso de Jesus, R. Mei, L. H. Innocentini The influence of extrusion variables on the interfacial adhesion and mechanical properties of recycled PET composites,. Journal of Materials Processing Technology 162-163 (2005) 90.
• [13] S.M. Zebarjad, S.A. Sajjadi and M. Tahani, Modification of fracture toughness of isotactic polypropylene with a combination of EPR and CaCO3 particles, Journal of Materials Processing Technology, In Press
• [14] C.Y. Tang, J.Z. Liang A study of the melt flow behaviour of ABS/CaCO3 composites, Journal of Materials Processing Technology, 138 ( 2003) 408.