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

Table 10

Effect of maleic anhydride grafted treatment on various biofibers.

S. no.	Fibers used	Type of chemical treatment	Effects	Ref.
1	Jute	Maleic anhydride grafted	Coupling agent has greater effect on Young’s modulus and dynamic storage modulus.	[162]
2	Flax and hemp	Maleic anhydride grafted	The treatment improved dynamic and mechanical properties.	[163]
3	WSF	Maleic anhydride grafted	The treatment significantly reduced crystallinity and thermal stability is higher than that in acetylation treatment.	[164]
4	Wood flour	Maleic anhydride grafted	An enhancement in tensile strength and modulus properties became twice as compared with untreated fibers.	[165]
5	Sisal	Maleic anhydride grafted	Improvement in tensile, flexural, and impact strength by 50%, 30%, and 58%, respectively. Reduction in water absorption by 61%. Higher level of crystallinity was also observed.	[166]
6	Banana/hemp/sisal	Maleic anhydride grafted	Reduction in moisture resistance compared to untreated fiber. At 50% fiber loading, increases in tensile, flexural, and impact strength. Flexural modulus values were higher than those of untreated fiber.	[167]
7	Hildegardia	Maleic anhydride grafted	An increase in tensile properties with addition of compatibilizers.	[168]
8	Pineapple leaf	Maleic anhydride grafted	The treated fiber exhibited increased aspect ratio and matrix resulting in increased tensile strength, impact strength, and flexural strength by 9%, 30%, and 3%, respectively, compared to untreated fibers	[169]
9	Jute/sisal	Maleic anhydride grafted maleated HDPE	At 1% concentration of coupling agent increased the dynamic (storage modulus and loss modulus) and static (tensile, flexural, and impact) mechanical properties.	[170, 171]
10	Wood flour	Maleated polypropylene	An increase in dimensional stability and strengthening by MAPP addition.	[172]
11	Natural fibers	Maleated coupling agents	An increase in interfacial adhesion between fiber and matrix due to removal of hydroxyl group by addition of coupling agent.	[173]