Fiber tensile properties anhydride

Table 3. Fiber Tensile Properties of Aromatic Poly(anhydride)s as a Function of Draw Ratio...

Mishra et al. [36, 37] tested the tensile and impact strength of maleic anhydride-treated sisal composite at different fiber volumes and found that tensile and impact strength decreased gradually from 40% fiber volume composite to 55% fiber volume polyester composite. It was concluded that maleic anhydride-treated composite at fiber volume 40% showed higher and better mechanical properties [36, 37]. Related to tensile properties evaluation, Mishra et al. [36, 37] concluded that a composite of alkali treated (5%) sisal fiber was fotmd to achieve better mechanical properties as compared to rmtreated, dewaxed, 10% alkali treated and bleached sisal fiber-reinforced composites. A 5% alkali-treated sisal fiber-reinforced composite... 

Table 22.13 Tensile properties of maleic anhydride treated sisal fiber composite...

Ichazo et al. [120] reported the mechanical properties of treated and untreated sisal fiber. Polyolefin composites were developed using 20% fiber loading. Acetic anhydride was used and acetylated treatment showed an improved tensile modulus by 30-40%. But the impact strength and elongation at break decreased because of the rigid interface between fiber and matrix [120]. 

The type of fiber, polymer matrix, and coupling agent are of importance in order to improve the mechanical properties of the resulting composites. Also, the performance of the composites depends on several factors, such as chemical composition, microfibrillar, cell dimensions, and the interaction between the fiber and the polymer matrix. The effect of WG on the tensile properties of sisal fibers was reported [75]. The composites were compounded with sisal fibers and polypropylene matrix. The chemical modification treatments for the composites apphed were WG solution and polypropylene-grafted maleic anhydride copolymer. 

Ashori and Nourbakhsh [ 16] obtained tensile, flexural and impact property increases as high as 50% of corn stalk, sunflower stalk and bagasse fiber-reinforced polypropylene composite due to incorporation of maleic anhydride polypropylene compatibilizer. 

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