For Polypropylene having carbon black composites, there are crystals formed for 2theta around 43 degrees during XRD analysis. I could not find literature explaining this peak.
Foram Dave
Hey, how's it going?
So, you synthesized a polypropylene (PP) incorporated with black carbon. That's right?
The PP with the alpha phase is identified around ~ 14, 18, 19 and 22° can be attributed to the planes (110), (040), (130) and (131) + (041), respectively, corresponding to the crystalline structure with monoclinic cell unit.
I searched the literature for some black carbon XRDs and noticed the presence of two wide peaks, the first around 23º and a second around 43º were assigned to the (002) and (100) planes of carbon black, respectively.
Wouldn't this 43º plane in the XRD of the propylene incorporated with black carbon be an indication of the presence of black carbon in the structure of the PP?
Attached are the references used for the speech above.
Att.: Lara
If there is presence of carbon substance either in pure or mixed form then the crystal formed around the diffraction angle of 44deg may represent crystalline diamond.
Dear Prof. Ribeiro, Thank you for your answer. I could observe an increase in the crystalline peak intensity when carbon black-filled polypropylene samples are heat treated. I could see the increase in intensity for 2theta values 28.8 and 43. Does both these peaks due to carbon black? Also, the process takes place under atmospheric conditions. Do we say that there is a change in the crystalline structure of carbon black or it is not the case in the presence of oxygen?
The Polypropylene with the alpha phase is identified around 15,17, 20 and 22° which can be attributed to the planes (110), (040), (130) and (131) + (041), respectively, corresponding to the crystalline structure with monoclinic cell unit.
The peaks at 23º and 43º were assigned to the (002) and (100) planes of carbon black, respectively.
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