Polypropylene/clay nanocomposites prepared by in situ grafting–melt intercalation with a novel co-intercalating monomer

Song, Pingan and Tong, Lifang and Fang, Zhengping (2008) Polypropylene/clay nanocomposites prepared by in situ grafting–melt intercalation with a novel co-intercalating monomer. Journal of Applied Polymer Science, 110 (1). pp. 616-623. ISSN 0021-8995

Abstract

Polypropylene (PP)/clay nanocomposites were prepared by melt-compounding PP with organomontmorillonite (PMT), using maleic anhydride grafted polypropylene (PP-g-MA) as the primary compatibilizer and N-imidazol-O-(bicyclo pentaerythritol phosphate)-O-(ethyl methacrylate) phosphate (PEBI) as the cointercalating monomer. X-ray diffraction patterns indicated that the larger interlayer spacing of PMT in PP was obtained due to the cointercalation monomer having a large steric volume and the d-spacing further increased with the addition of PP-g-MA, as evidenced by transmission electron microscopy. Thermogravimetric analysis revealed that the PEBI-containing PP nanocomposites exhibited better thermal stability than PEBI-free PP composites. Dynamic mechanical analysis demonstrated that the storage modulus was significantly enhanced, and the glass transition temperature (Tg) shifted slightly to low temperature with the incorporation of clay for PP/PMT hybrids. PEBI-containing PP/PMT composites gave a lower Tg value because of the strong internal plasticization effect of PEBI in the system. Cone calorimetry showed that the flame-retardancy properties of PP nano-composites were highly improved with the incorporation of PEBI.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 08 Aug 2019 04:55
Last Modified: 09 Aug 2019 05:18
Uncontrolled Keywords: polypropylene, nanostructure, thermal properties, flame retardant
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8699 Other Manufacturing > 869999 Manufacturing not elsewhere classified
Identification Number or DOI: 10.1002/app.28689
URI: http://eprints.usq.edu.au/id/eprint/35607

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