A new electroactive polyaryletherketone containing benzonitrile(EPEEK-CN) was synthesized from 2,6-difluorobenzonitrile,p-benzenediol and difluoromonomer containing phenyl-capped aniline tetramer segment,via ternary polycondensation.The obtained EPEEK-CN shows certain extent solubility in organic solvents,and its film casted from DMAc solution exhibits interesting electrical,mechanical and dielectric properties.
Polyacrylonitrile(PAN)/Fe 3 O 4 composite nanofibers were successfully obtained through electrospinning and sol-gel technology. The resulting magnetic Fe 3 O 4 nanoparticles were homogeneously distributed on the surface of PAN nanofibers and the diameters of polyacrylonitrile nanofibers and nanoparticles were easily controlled, respectively. The distribution of Fe 3 O 4 nanoparticles inside the nanofibrous composite was investigated by field emission scanning electron microscopy and transmission electron microscopy. X-ray diffraction reveals the presence of Fe 3 O 4 nanoparticles in the composite nanofiber. The resulting sample shows a super paramagnetic behavior.
YANG Fan ZHENG Wei HUANG Hui-min LI Zhen-yu ZHANG Hong-nan WANG Wei WANG Ce
A nonliquid crystal azobenzene polymer was prepared.The obtained films exhibit fast bending response at room temperature,which can improve the efficiency of the transformation of energy from light to mechanical energy.The surface structure of the relief gratings was investigated by atomic force microscopy.The depth of surface relief in a typical case is found to be around 94 nm.The product structures were characterize by UV light,1H NMR,AFM and Fourier transform infrared spectrum.
