Surface modified nanocellulose and its reinforcement in natural rubber matrix nanocomposites: a review by Lee, Seng Hua, Osman Al-Edrus, Syeed SaifulAzry, Faris Hakimi, Nik Muhammad, Wei, Chun Lum, Mohamad, Siti Fatahiyah, Park, Byung-Dae, Azmi, Anis