Manufacturing of Pili Nut (Canarium ovatum) Shells and Polyurethane (PUR) Adhesive as an Alternative Particleboard

Authors

  • Hans Christian Cablayan
  • Jane Lenny Estinar
  • Julia Nicole Tubog

Keywords:

pili nut, particle board

Abstract

Particleboard has been made to serve as a replacement to wood panels. It has disadvantages like its inability to withstand heavy weights and its high absorption of moisture and water. Addressing this problem, particleboard is produced from pili nut (Canarium ovatum) shells with polyurethane adhesive as the binder.Each sample represents a ratio: 90% pili nutshells: 10% polyurethane adhesive, 85% pili nutshells:15% polyurethane adhesive, 80% pili nutshells:20% polyurethane adhesive, and 75% pili nutshells:25% polyurethane adhesive. The pili nut shells were ground using a plastic crusher. The coarse and fine pili nut shells were separated. The particle board is made by mixing the polyurethane adhesive with the course and fine pili nut shells, stacking the layers of course and fine pili nut shells, and placing them in a mechanical press to add pressure. The particle boards are tested for their Moisture Content, Thickness Swelling and Water Absorption, Screw Withdrawal Test, and Modulus of Rupture. These properties will be compared to the Philippine National Standard Specifications. All samples failed the Modulus of Rupture property (PNSS >7.54). They all passed the tests for Thickness Swelling (PNSS <20), Water Absorption (PNSS <40), and Moisture Content (PNSS <20). Only the samples with the ratio 75:25 and 85:15 passed the test for Screw Withdrawal (PNSS >30). The particle board samples with the ratios 85:15 and 75:25 yield the best results, as they passed all 5properties. They are qualified to be an alternative to the standard particle board.

Published

2018-05-18