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Preparation and Characterization of Lignosulfonate–Acrylonitrile Copolymer as a Novel Carbon Fiber Precursor
journal contribution
posted on 2016-01-04, 00:00 authored by Keqiang Xia, Qin Ouyang, Yousi Chen, Xuefei Wang, Xin Qian, Li WangA novel carbon fiber precursor was
prepared from lignosulfonate
(LS) with acrylonitrile (AN) via a two-step process consisting of
esterification and free radical copolymerization. The LS–AN
copolymer was characterized by FTIR, 1H NMR, 13C NMR, UV, GPC, DSC, and TG. Continuous long precursor fibers with
a brown color and a dense structure were prepared from the LS–AN
copolymer by a wet spinning technique. Carbon fibers that were free
of any visible voids and other defects were also obtained from the
precursor fibers by thermal stabilization and carbonization. This
study provided a promising way to develop partially biobased carbon
fibers with desired mechanical properties for industrial applications.