One-pot preparation and continuous spinning of carbon nanotube/poly(p-phenylene benzobisoxazole) copolymer fibers

• DOI: 10.1039/c2jm34630c
• Publication Date: 2012-08-08T11:31:42Z
• Authors: Zhen Hu; Jun Li; Peiyi Tang; Dalong Li; Yuanjun Song; Yanwei Li; Lei Zhao; Cuiyun Li; Yudong Huang
• Keywords: Poly(N-isopropylacrylamide); Thermal Stability

Poly(p-phenylene benzobisoxazole) (PBO) fibers are some of the strongest organic polymer fibers, however, even stronger can be made using carbon nanotubes (CNTs). In present study, copolymerization functionalized CNTs with PBO was successfully carried out by one-pot in situ polycondensation polyphosphoric acid. Pristine were first oxidized to CNT–COOH and then modified 4,6-diaminoresorcinol (DAR) or trimer (DAR–TA–DAR) improve reactivity, solubility, dispersivity, interfacial adhesion matrix. Functionalized further covalently incorporated through polymerization. The chemical structure morphology CNT–PBO copolymers well characterized for confirming formation covalent bond between PBO. Moreover, continuous copolymer have been fabricated a dry-jet wet-spinning technique. their mechanical thermal properties investigated. tensile modulus, strength, stability improved. improvement molecular chain packing order, good dispersion high alignment matrix, bonding at interface suggested as main reasons performance