Influence of ultrasonication time on the various properties of alkaline-treated mango seed waste filler reinforced PVA biocomposite oleh Asrofi Mochamad, Setyobudi Rizki, Ilyas R. A., Sanyang M. L., Adegbenjo A. O., Idris I., Thiagamani Senthil Muthu Kumar, Midhun Dominic C. D., Knight V. F., Norrrahim M. N. F., Rajeshkumar L., Asyraf M. R. M.