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AuthorGumede, T.P.
AuthorLuyt, A.S.
AuthorPerez-Camargo, R.A.
AuthorMuller, A.J.
Available date2017-03-01T10:59:48Z
Publication Date2016
Publication NameJournal of Applied Polymer Science
Identifierhttp://dx.doi.org/10.1002/app.44398
CitationGumede, T. P., Luyt, A. S., Pérez-Camargo, R. A. and Müller, A. J. (2016), The influence of paraffin wax addition on the isothermal crystallization of LLDPE. J. Appl. Polym. Sci., 134, 44398
ISSN0021-8995
URIhttp://hdl.handle.net/10576/5333
AbstractThe influence of paraffin wax addition on the isothermal crystallization kinetics of linear low density polyethylene (LLDPE) was studied in a temperature range where the wax was always in the molten state and could be considered a solvent for LLDPE. The LLDPE/wax blends were prepared by melt mixing in the following compositions: 100/0, 95/5, 90/10, 80/20, 70/30, and 60/40. The results obtained show that the rate of isothermal crystallization is depressed by wax addition at constant crystallization temperatures. LLDPE needs a higher amount of supercooling to start crystallizing as the content of wax increases in the blends. The Flory–Huggins theory (FH) for polymer/diluent mixtures was applied employing equilibrium melting temperature values obtained by extrapolation with the Hoffman–Weeks method. The results of the FH analysis indicate that the interactions between wax and LLDPE are nonlinear and strongly depend on composition. This nonlinear composition dependence of wax/LLDPE interactions is reflected in the complex way in which the overall crystallization kinetics rate depends on both supercooling and composition.
Languageen
PublisherWiley
Subjectblends
crystallization
polyolefins
TitleThe influence of paraffin wax addition on the isothermal crystallization of LLDPE
TypeArticle
Issue Number2
Volume Number134
ESSN1097-4628


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