کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
688243 1460107 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research on the preparation technology of polyaniline nanofiber based on high gravity chemical oxidative polymerization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Research on the preparation technology of polyaniline nanofiber based on high gravity chemical oxidative polymerization
چکیده انگلیسی
Polyaniline (PANI) nanofibers with higher yield and homogeneous morphology were successfully prepared in larger scale by multi-step oxidation process with high gravity chemical oxidative polymerization (HGCOP) method in a rotating packed bed (RPB) under a higher initial aniline concentration of 0.5 M. The influence of oxidation times and ammonium peroxydisulfate (APS) dosages on the morphology, yield and conductive property of PANI were investigated, the products were characterized by SEM and UV-vis. Moreover, the anti-corrosion property and water dispersity of the as-prepared PANI nanofibers were also studied. The results showed that two-step oxidation process was an efficient way for mass production of PANI nanofibers by HGCOP, in which the optimum molar ratio of APS/aniline in the first and second oxidation stage was 0.5 and 0.25, respectively. PANI nanofibers with yield of 76.1%, diameters of 50-80 nm and average aspect ratio of 9.7 were obtained under the optimized condition. The PANI nanofibers were highly dispersible in water and exhibited an outstanding anti-corrosion effect, which could be applied to the environment-friendly processing and applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering and Processing: Process Intensification - Volume 70, August 2013, Pages 1-8
نویسندگان
, , , , , , ,