Abstract

More interest has been shown in the efficient use of natural fibers in recent years as a result of increasing concern for environmental and conservation issues. The current research investigates mechanical (tension and bending) and dimension stability (moisture absorption and thickness swelling) properties of Naturally Woven coconut tree leaf sheath (CLS) reinforced Phenol Formaldehyde (PF)/Urea Formaldehyde (UF) composites. Woven coconut leaf sheath composite were prepared in both treated and untreated forms with volume fraction of 60% of CLS and 40% of PF resin. CLS were chemically treated using 5% of NaOH and composites plates were prepared by using a hydraulic hot press at 140oC. Further, these composites specimens were cut down and tested for mechanical and physical properties as per the ASTM standards. From the results in was observed that, CLS/PF composites show good properties due to better bonding between fiber and the matrix (resin). This composite can sustain more load carrying capacity and resistances to moisture absorption when compared with CLS/UF composites.

Keywords

natural fiber, mechanical properties, coconut leaf sheath, polymer composites, urea formaldehyde, phenol formaldehyde