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Crystalline Morphology and Properties of Multi-walled Carbon Nanotube Filled Isotactic Polypropylene Nanocomposites: Influence of Filler Size and Loading

Isotactic polypropylene (PP) nanocomposites with multi-walled carbon nanotubes (MWCNTs) of various diameters (10–50 nm) were fabricated by extrusion and compression-molding techniques and characterized by X-ray diffraction measurements, differential scanning calorimetry, scanning electron microscopy...

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தலைமை எழுத்தாளர்கள்: Bhuiyan, Md. Khairul Hassan, Rahman, Md. Mahbubur, Mina, Md. Forhad, M. R., Islam, Gafur, Md. Abdul, Begum, Afia
வடிவம்: கட்டுரை
வெளியீடப்பட்டது: Elsevier Ltd 2013
பகுதிகள்:
TP Chemical technology
நிகழ்நிலை அணுகல்:http://dx.doi.org/10.1016/j.compositesa.2013.05.011
http://dx.doi.org/10.1016/j.compositesa.2013.05.011
http://umpir.ump.edu.my/6356/1/Crystalline%20Morphology%20and%20Properties%20of%20Multi-Walled%20Carbon%20Nanotube%20Filled%20Isotactic%20Polypropylene%20Nanocomposites-%20Influence%20of%20Filler%20Size%20and%20Loading.pdf
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தொகுப்பு:Isotactic polypropylene (PP) nanocomposites with multi-walled carbon nanotubes (MWCNTs) of various diameters (10–50 nm) were fabricated by extrusion and compression-molding techniques and characterized by X-ray diffraction measurements, differential scanning calorimetry, scanning electron microscopy, mechanical test and differential thermal analyses. The pure PP exhibits both the a- and b-axes oriented α-crystal, whereas the MWCNTs induce the b-axis orientation of the α-crystal along with the formation of minor γ-phase crystal in nanocomposites. Crystallinity, long period of lamellae, tensile strength, tensile modulus (TM) and microhardness (H) of PP considerably change by different loading and sizes of MWCNTs. The estimated values H/TM = 0.09–0.10 for all samples approach the predicted value of 0.10 for polymers. The increase in crystallinity has been demonstrated by both XRD and DSC studies. Mathematical models have been invoked to explain the changes in mechanical properties. An increase in thermal stability of polymer matrix occurs with increasing MWCNTs size and loading.

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