Surface modification of calcium carbonates studied by inverse gas chromatography and the effect on mechanical properties of filled polypropylene | Zendy

Price Gareth J | Zendy; Ansari Deeba M | Zendy

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Surface modification of calcium carbonates studied by inverse gas chromatography and the effect on mechanical properties of filled polypropylene

Author(s) -

Price Gareth J,

Ansari Deeba M

Publication year - 2004

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.1392

Subject(s) - inverse gas chromatography , stearic acid , polypropylene , surface energy , calcium carbonate , materials science , surface modification , chemical engineering , calcium , composite material , polymer chemistry , metallurgy , engineering

Inverse gas chromatography (IGC) has been used to characterize the surfaces of a pure calcitic calcium carbonate as well as samples that had been treated with sodium polyacrylate and/or stearic acid. The dispersive components of the surface free energy for the pure material agreed well with related literature data. Polar contributions to the surface interactions with a range of probes were determined. The results show that the surface treatments reduced the polarities of the surfaces and that modification with stearic acid produced a non‐polar, low‐energy surface. Some mechanical properties of the polypropylene composites containing the modified calcium carbonates were found to correlate well with the filler surface energies. Copyright © 2004 Society of Chemical Industry

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