Cheng Yanhua

Research development of nano hybrid functional composite polyester fiber

Poly(ethylene terephthalate) (PET) is one of the most extensively used semicrystal polymers, which has found its applications in fibers, films, packaging and molding materials. About 80% of polyester products is polyester fiber and polyester fiber is the largestvariety of chemical fiber, but its industrial development is limited by severe homogeneousness, unitary function, inferior functionalization ratio, high cost and low added value. Due to good machinability and excellent mechanical properties of poly(ethylene terephthalate) fiber, a common method to realize the functionalization of PET fiber is introducing nano-materials into the PET matrix based on organic/inorganic hybrid principle. This paper summarizes the research status of PET matrix nano-hybrid functional fibers with flame-retardant, antibacterial, uvioresistant and conductive properties, including the preparation methods, modification ways, fabrication techniques and functional performances of these fibers. Also, this paper evaluates the merits of three modification methods: surface coating, blending and in situ polymerization; furthermore investigates the effect of blending and in situ polymerization on the dispersion of nano materials and the spinnability of nano composites. Finally, this paper prospects the developing direction of PET matrix nano-hybrid functional fibers: structural and functional design of nanomaterials, controllable interface of nano-materials and polyester, post-finishing technology of nano-hybrid materials; develop multifunctional, intelligent and environment-friendly nano hybrid industrial fibers, and set up systemic evaluation standards of ecological safety of nano-hybrid fiber.

Organic-inorganic hybrid material and multifunctional fibers

Organic-inorganic hybrid materials can achieve the multi-scale composites of organic polymers and inorganic materials in the nano or molecular level. On one hand, such hybrid materials can exert each components characteristics. On the other hand, they reflect the unique collaboration features, such as new performance and multifunction. This principle can also be implemented in organic-organic hybrid system. With the continuous development of industrial fiber materials, their applications continue to be expanded. The development of new polymer materials to achieve multifunctional fibers has become a hot topic. According to the requirement of multifunctional fibers development, researchers try to build hybrid functional materials at the molecular level, build hybrid functional materials system and fiber-forming polymer hybrid system using the methods of structural design and construct interface combining with the organic-inorganic hybrid mechanism. This paper takes the structural design and condensed control of fiber-forming polymers, the structure-controllable preparation of nano-fibers and low-dimensional nano-fibers for example, introducing the research progress of organic-inorganic hybrid principles in the aspect of multi-functional fibers. Finally, it prospects the development of multifunctional organic-inorganic hybrid fibers.