Melt strength of calcium carbonate filled polypropylene melts | Zendy

Kao Nhol | Zendy; Chandra Arnab | Zendy; Bhattacharya Sati | Zendy

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Melt strength of calcium carbonate filled polypropylene melts

Author(s) -

Kao Nhol,

Chandra Arnab,

Bhattacharya Sati

Publication year - 2002

Publication title -

polymer international

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.592

H-Index - 105

eISSN - 1097-0126

pISSN - 0959-8103

DOI - 10.1002/pi.1057

Subject(s) - polypropylene , calcium carbonate , rheology , materials science , mixing (physics) , plastics extrusion , izod impact strength test , extensional definition , composite material , mineralogy , chemical engineering , chemistry , ultimate tensile strength , geology , paleontology , physics , tectonics , quantum mechanics , engineering

This paper investigates the extensional rheology (through melt strength measurement) of calcium carbonate (CaCO 3 ) filled polypropylene (PP) melts. Different concentrations of CaCO 3 filled PP were produced by mixing two master batches of pure PP and 70 wt% CaCO 3 filled PP in required proportions in a counter‐rotating twin‐screw extruder. It was found that the melt strength of the CaCO 3 –PP melts was independent of CaCO 3 concentrations up to 25 vol%. Further increase in CaCO 3 concentration led to a severe reduction of melt strength. © 2002 Society of Chemical Industry

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