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Effect of the coupling agent's reactivity on the shrinkability of the blends consisting of grafted low‐density polyethylene and ethylene acrylic elastomer
Author(s) -
Mishra J. K.,
Roychowdhury S.,
Das C. K.
Publication year - 2002
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.162
Subject(s) - materials science , maleic anhydride , differential scanning calorimetry , polyethylene , elastomer , thermoplastic elastomer , reactivity (psychology) , polymer chemistry , composite material , ethylene , low density polyethylene , thermoplastic , thermal stability , melting point , chemical engineering , organic chemistry , copolymer , polymer , chemistry , thermodynamics , medicine , catalysis , physics , alternative medicine , pathology , engineering
Blends prepared by melt mixing of thermoplastic elastomer have gained considerable attention in recent years from a heat shrinkability point of view. Our present study deals with the measurement of heat shrinkability of the maleic anhydride grafted low‐density polyethylene and ethylene acrylic elastomer. Two samples have been prepared to study the effect of coupling agent's reactivity on the shrinkability of the blends. The coupling agents used are 4,4 ′‐diamino diphenyl sulphone, and 4,4 ′‐diamino diphenyl methane. Shrinkability was measured at room temperature, 120 ° C , 150 ° C , and 180 ° C . Shrinkability is found to be greater in high temperature stretched sample rather than that of room temperature stretched sample. It is observed that reactivity as well as heat shrinkability is more when 4,4 ′‐diamino diphenyl methane is used as a coupling agent. The mechanism of interchain crosslinking reaction has been confirmed by IR spectroscopy. Differential scanning calorimetry was performed to study the thermal stability of the sample. Copyright © 2002 John Wiley & Sons, Ltd.