Adhesion Strength of Parring Bamboo (Gigantochloa atter) Fiber With Flame Retardant Polyester Resin: Wettability

Abstract

This study explores the potential of parring bamboo fiber (PaBFeR) as a composite reinforcement material with flame retardant polyester (FR‐P). This study addresses the wettability of PaBFeR by measuring the contact angle of FR‐P resin on the surface of PaBFeR uses the sessile drop method in accordance with ASTM D7334‐08 (2022), as many as seven drops per sample. The alkaline treatment at 85°C for the delignification of PaBFeR varied by 3%, 5%, and 7% and the washing varied for 45, 90, and 135 min to see the effect on the value of the formed contact angle. The results obtained are that the optimal wettability for application in FR‐P matrix PaBFeR‐reinforced composites is NaOH11%90 with a contact angle range value of 42 ° ≤ θ ≤ 48 ° and average contact angle 44.86 ° ± 1.88 ° . In contrast, the NaOH3%45 sample was declared the least optimal configuration because it had an average contact angle value of 33.57 ° ± 7.44 ° and a very wide range of contact angles (21 ° ≤ θ ≤ 46 ° ), indicating the instability of the results.

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