A Review on the Effect of Various Chemical Treatments on the Mechanical Properties of Renewable Fiber-Reinforced Composites

Increased environmental concerns and global warming have diverted effort all over the world to focus on renewable sustainable resources for next generation of composite products due their recyclability, renewability, cost effectiveness, satisfactory mechanical performance. Bio/natural fibers which are environment friendly materials employed as reinforcement led developing a biocomposite reduction in greenhouse emission carbon footprints. However, biofibers also having some limitations that need be addressed including poor compatibility between reinforcing fiber matrices, high moisture absorption, swelling, chemical fire resistance, dispersion properties. A lot research has been performed physical properties natural composite. Properties such novel mainly depend adhesion matrices. Consequently, adhesion, swelling lead formation crack both matrix fiber. Therefore, numerous techniques tried till date modify surfaces enhance reduce water absorption. This review article provides comprehensive information about effect various surface modification include alkaline, silane, acetylation, permanganate, peroxide, benzoylation, acrylonitrile grafting, maleic anhydride grafted, acrylation, isocyanate. In addition, effects cellulose, hemicellulose, lignin, pectin reported. concluded treatment with 5% NaOH concentration improves physical, mechanical, thermal resulting composites compared untreated composites.