Researcher

Natural Fiber

Matrix

Treatment

Findings

Mylsamy and Rajendran [48]

Agave

Epoxy

5% NaOH

· Rough surfaces have been observed

· voids have been noticed in the untreated composite

Athijayamani, Thiruchitrambalam [55]

Roselle

Sisal

Polyester

10% NaOH

· Gradual weight loss has been observed

· alkali-treated composite samples showed superior wear performance

Nam, Ogihara [54]

Coir

butylene succinate

5% NaOH

· increased surface roughness with increasing immersing time