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Abstract
In this work, surface treatment of hybrid composites fabricated through compression molding process is carried using NaOH in (6% in weight) for two different time periods (45 and 145 h). To investigate the outcome of surface modifications on mechanical properties of treated and non-treated fibers. Jute and sisal were used as reinforcement materials and PLA was used as resin.Mechanical properties like tensile strength, flexural strength have been analyzed and measured for treated and untreated natural fiber reinforced polymer nonlinear composites.It has been observed the composites ' tensile strength has enhanced due to the inclusion of natural fibers topolymers. Furthermore, the use of surface treatment method has seen a substantialrise in tensile and flexural strength.