Abstract
The current investigation deals with the synthesis and application of functionalised acrylonitrile-butadiene rubber (NBR-g-MAH) as an impact modifier and compatibilising agent in the recycled blend of poly(vinyl chloride) and poly(methylmethacrylate). The performance of NBR as an impact modifier was improved by grafting with maleic anhydride. The varied concentration of NBR-g-MAH/NBR mixture has differed effects on the mechanical, thermal and morphological properties of the recycled blend. The recycled blend with 9 wt% of NBR-g-MAH/NBR mixture shows optimum impact strength and elongation-at-break. Moreover, Fourier-transform infrared spectroscopy analysis confirms interactions with polar functionalities in the recycled blends. Differential scanning calorimetry and scanning electron microscope analyses suggest partial miscibility as well as compatibility of the polymeric constituents in the blend. Additionally, thermal gravimetric analysis shows higher thermal stability for the modified recycled blend as compared to its parent blend.
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Acknowledgements
The authors would like to thank Department of Science and Technology (DST), Government of India, for the financial support (DST/TSG/WM/2015/466-G) and M/s E-Parisaraa, Bengaluru, India, for their kind supply of WEEE materials. Thanks are extended to Manju P, research fellow CIPET, for arranging NBR for the research work, and also to Anise Mohammed, CEO-Merino Elastomers, Cochin, for providing NBR for research work.
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Suresh, S.S., Mohanty, S. & Nayak, S.K. Synthesis and application of functionalised acrylonitrile-butadiene rubber for enhancing recyclability of poly(vinylchloride) (PVC) and poly(methylmethacrylate) (PMMA) in recycled blends. Clean Techn Environ Policy 20, 969–979 (2018). https://doi.org/10.1007/s10098-018-1514-6
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DOI: https://doi.org/10.1007/s10098-018-1514-6