Abstract
AbstractIn this article, sulfonated ethylene‐propylene‐diene monomer terpolymer (H–SEPDM) was used to treat CaCO3 particles. CaCO3 particles are encapsulated by H–SEPDM through the reaction of sulfonic acid group (SO3H) in H–SEPDM with CaCO3 to improve the interface adhesion of CaCO3 with HDPE. In case the treated CaCO3 is blended with HDPE, a brittle–ductile transition occurs. The impact strength of the blend rises sharply at 25–30 wt % CaCO3, and amounts to more than 700 J/m, four times as high as that of HDPE at 30 wt % CaCO3, without much loss of its yield strength and modulus. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2140–2144, 2001
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