Alkaline Treatment of Oil Palm Frond Fibers by Using Extract of Oil Palm EFB Ash for Better Adhesion toward Polymeric Matrix - Fatra, Warman; Department of Mechanical Engineering, University of Riau, Jl. HR Subantas KM 12,5, Kampus Bina Widya, Simpang Baru,Pekanbaru, Riau 28293 (ITB Journal Publisher, LPPM ITB, 2015)