The research objective was investigate the effect of alkali treatment on thermal stability, interfacial shear strength, mechanical properties and waterabsorption in composite honey pineapple fiber (HPF). HPF not given treated by soaking a mixture 6% wt sodium hydroxide. Mixing between Unsaturated Polyester (UPRs) Microcrystalline Cellulose (MCC) applied Taguchi test with 5% MCC, 250 RPm, 40 oC ...