This review article focuses on the micro-fibrillar fiber origin, its importance and its traditional methods of preparation. Further the different factors which effect the properties of microfiber are being summarized over here. The effect of viscosity ratio, compatibilzer role as constituents are highlighted in the view to point out there importance in microfiber formation. Also the two most common and easily controllable processing factors: draw ratio and drawing temperature are studied over here which governs the structure, crystallinity and conductivity of the fiber. The review covers the CNTs based microfibers being researched so far describing the factors effecting the properties of the fiber and hence correlating the traditional method of fiber formation with incorporation of modern concept of nanotechnology to form high performance micro-fibrillar fiber.

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