



@article {2567,
	title = {Enhancement of the mechanical properties of a high-density polyethylene},
	journal = {Journal of Applied Polymer ScienceJ. Appl. Polym. Sci.},
	volume = {73},
	year = {1999},
	note = {Cited By (since 1996): 48Export Date: 21 November 2012Source: ScopusCODEN: JAPNAdoi: 10.1002/(SICI)1097-4628(19990919)73:12<2473::AID-APP16>3.0.CO;2-OLanguage of Original Document: EnglishCorrespondence Address: Kalay, Gurhan; Brunel Univ, Middlesex, United KingdomReferences: Kalay, G., Allan, P.S., Bevis, M.J., (1997) Kunststoffe, 87, p. 6;Kalay, G., Bevis, M.J., (1997) J Polym Sci Polym Phys, 35, p. 241; 
Kalay, G., Bevis, M.J., (1997) J Polym Sci Poly Phys, 35, p. 265; 
Kalay, G., Bevis, M.J., (1997) J Polym Sci Polym Phys, 35, p. 415; 
Kalay, G., Ogbonna, C.I., Allan, P.S., Bevis, M.J., (1995) Trans IChemE Part A Chem Eng Res Design, 73, p. 798; 
Keller, A., Kolnaar, H., (1997) Mat Sci Technol, 18, p. 191; 
Allan, P.S., Bevis, M.J., (1987), British Patent 2170-140-BAllan, P.S., Bevis, M.J., (1990) Composites Manufact, 1, p. 79; 
Wang, L., Allan, P.S., Bevis, M.J., (1995) Plastics Rubber Composites Process Appl, 23, p. 139; 
Gil, E.M., Kalay, G., Allan, P.S., Bevis, M.J., (1997) Polymer Process Engineering 97, pp. 40-54. , Coates, P. D., Ed.; The Institute of Materials: London; 
Ogbonna, C.I., Kalay, G., Allan, P.S., Bevis, M.J., (1995) J Appl Polym Sci, 58, p. 2131; 
Kub{\'a}t, J., M{\r a}nson, J.A., (1983) Polym Eng Sci, 23, p. 86; 
Kub{\'a}t, J., M{\r a}nson, J.A., Rigdahl, M., (1983) Polym Eng Sci, 23, p. 877; 
Boldizar, A., Kub{\'a}t, J., Rigdahl, M., (1990) J Appl Polym Sci, 39, p. 63; 
Guan, Q., Shen, K., Ji, J., Zhu, J., (1995) J Appl Polym Sci, 55, p. 1797; 
Guan, Q., Shen, K., (1995) Z. Chem J Chinese Univers, 16, p. 1129; 
Ross, J.P., (1998) Taguchi Techniques for Quality Engineering, , McGraw-Hill: New York; 
Schmidt, S.R., Launsby, R.G., (1994) Understanding Industrial Designed Experiments, 4th Ed., , Air Academy Press: CO; 
Montgomery, D.C., (1991) Design and Analysis of Experiments, 3rd Ed., , Wiley: New York
},
	month = {1999///},
	pages = {2473 - 2483},
	publisher = {John Wiley \& Sons Inc},
	abstract = {This paper describes the process optimization in injection molding of high-density polyethylene (HDPE). Both conventional injection molding and shear controlled orientation (SCORIM) were employed in processing. The process optimization was based on design of experiments and complemented with analysis of variance. Mechanical characterization was carried out by tensile testing. Wide-angle X-ray diffraction and differential scanning calorimetry were used for the structural characterization of the moldings. High-density polyethylene exhibits 7.2 GPa Young{\textquoteright}s modulus and 155 MPa of ultimate tensile strength following the application of SCORIM processing. These results account for a fourfold increase in Young{\textquoteright}s modulus and a fivefold increase in ultimate tensile strength compared to conventional injection molding. The maintenance of toughness while enhancing stiffness and strength of the SCORIM moldings is attributable to an oriented morphology developed during shear flow, i.e., shish-kebab structure. The frequency of shearing action has the strongest influence on the morphology development. It is also demonstrated that the studied parameters are very much interdependent. It is possible to achieve substantial gains in mechanical properties of HDPE in SCORIM processing without causing a substantial increase in cycle time.},
	keywords = {differential scanning calorimetry, Elastic moduli, High density polyethylenes, Injection molding, morphology, Optimization, Shear controlled orientation in injection molding, Shear flow, Shish kebab structure, Stiffness, Strength of materials, tensile strength, Tensile testing, Toughness, Wide angle X ray diffraction, X ray diffraction analysis},
	isbn = {00218995 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0033347604\&partnerID=40\&md5=14466d58532f85bbaeac12f9903bc066},
	author = {Kalay, G. and Sousa, R.A. and Reis, R.L. and Cunha, A.M. and Bevis, M.J.}
}
