Abstract

Coconut coir is an important part of coconuts with a portion about 35% of total weight. Coconut coir fiber has a high cellulose content, as such this fiber can be used as a raw material for pulping in paper production. This research utilizes coconut coir waste which has high fiber as raw material for paper production. Coconut coir is combined with cassava peel that has been mashed then processed through a delignification process. Next step the pulp mixture is filtered and rinsed, then formed into paper and dried. This study aims to determine the effects of NaOH concentration on tensile strength and tear strength of paper. From the results of the tensile strength and tear strength tests, it was concluded that the higher the NaOH concentration in the delignification process, the lower the results obtained. At 5%, 7%, 9%, 11% and 13% NaOH concentrations, the tensile test results were obtained with values (2.83, 2.24, 1.48, 1.25 and 1.08 kN/m) and the results tear test with values of (47.25, 43.05, 35.05, 32.15 and 25.12 gf).