Polypropylene PP-g-MAH

PP-g-AA - acrylic acid grafted polypropylene PP-g-MAH - maleic anhydride grafted polypropylene PPacr - acrylic acid grafted polypropylene PPmal - maleic anhdride grafted polypropylene PPS - polyphenylene sulfide PS - polystyrene... 

One of the earliest references on compatibilizing a nylon-6-polypropylene blend using maleic anhydride grafted PP (PP-g-MAH) was the work of Ide and Hase-gawa published in 1974 [35]. In their study, the formation of a graft copolymer was confirmed by DSC after solvent extraction of the PP component. Blends with PP-g-MAH... 

The most commonly used compatibilLzers for the blends are graft copolymers of polypropylene with maleic anhydride (PP-g-MAH) (197-203), glycidyl methacrylate (PP-g-GMA) (204,205), and acrylic acid (PP-g-AA) (198,206). They can increase the tensile strength and impact strength of the blends. Favis et al. (207-210) used an ionomer, a copolymer of ethylene and a mixture of methacrylic acid, zinc methacrylate, and isobutylacrylate to compatibUize PP/PA blends and found it effective to decrease the dispersed particles and improve mechanical properties. 

The electron optical method may not detect a dispersed phase in blends of PA with g-PO, so morphologically such materials seem single-phased. Similar situations were observed, for example, with PA6/polypropylene blends compatibi-lized by PP-g-MAH (20). 

Polypropylene (PP500P, SABIC) has melt flow rate of 3.1 (2.16 kg at 230 °C) and density of 905 kg/m3 was used as matrix resin. Nano-sized synthetic ultrafine surface treated precipitated calcium carbonate (Socal 312, Solvay, France) with mean particle diameter of 70 nm used as filler phase. PP-g-MAH compatibiliser (Priex 20097, Solvay, France) with a maleic anhydride content of 0.05 wt % and MFI of 15 (2.16 kg at 230 °C) was employed to promote the interfacial interaction between nano-CaC03 and PP, and to extend the dispersion of nanoparticles in polymer matrix. Compounds used as processing materials are listed in the table 1. 

Abacha, N. and Fellahi, S. 2002. Synthesis of PP-g-MAH and evaluation of its effect on the properties of glass fibre reinforced nylon 6/polypropylene blends. Macromolecular Svmvosia 178 131-138. 

Kouini B, Serier A. Properties of polypropylene/polyamide nanocomposites prepared by melt processing with a PP-g-MAH compatibilizer. Mater Des 2012 34 313-318. 

PP/St-g-MAH = Blend of polypropylene with polystyrene grafted with maleie anhydride... 

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