Abstract
Typical poly (metaphenylene isophthalamide) fibers exhibit excellent heat resistance and excellent flame retardancy but very poor breaking strength, which limits their diversified applications severely. Therefore, it becomes urgently important to develop new strategies to improve their breaking strength. In this regard, a new composite fiber was prepared by wet spinning through a blend solution of poly (metaphenylene isophthalamide) and cellulose nanocrystals. Poly (metaphenylene isophthalamide) composite fibers with excellent breaking strength blended with cellulose nanocrystals were prepared through a simple and scalable blending strategy. In contrast to the pristine poly (metaphenylene isophthalamide) fiber, its mechanical properties were significantly improved, such as maximum breaking strength of 4.89 cN/dtex, which is 86.8% higher than pristine poly (metaphenylene isophthalamide) fiber. This work provides a new way of thinking to fabricate high-performance poly (metaphenylene isophthalamide) fibers for high-tech applications.
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