ABSTRACT
In this research, the polypyrrole/silver (PPy/Ag) composite was first in-situ prepared on alginate fabrics by chemical oxidative polymerization of pyrrole (Py) monomer using silver nitrate as oxidant and sodium dodecyl sulfate (SDS) as the dopant. The effects of mole ratio of Py to silver nitrate, reaction time and dopant concentration on the preparation of PPy/Ag composite were optimized. It was found the optimal molar ratio of Py to silver nitrate was 1:1.5 with 0.02 M SDS under the reaction time of 10 h. Then, the microstructure and properties of resultant PPy/Ag composite were analyzed by scanning electron microscope (SEM), Fourier infrared spectrometer (FT-IR), X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and the thermogravimetry analysis (TGA), respectively. Finally, the influences of PPy/Ag coating on the performance of alginate fabrics including electrical conductivity, hydrophilicity, antistatic property and anti-ultraviolet capability were determined. It was found that the electrical conductivity of alginate fabric could be intensively increased after PPy/Ag coating. Meantime, the anti-ultraviolet capability and hydrophobicity could be largely improved by PPy/Ag coating especially under high Py dosage. This paper introduced a simple method for preparing PPy/Ag composite direct on alginate fabric to make it a good functional substrate which could be applied in many fields.
Subject(s)
Alginates/chemistry , Polymers/chemistry , Pyrroles/chemistry , Silver Nitrate/chemistry , Textiles , Electric Conductivity , Humans , Hydrophobic and Hydrophilic Interactions , Microscopy, Electron, Scanning/methods , Photoelectron Spectroscopy , Polymerization , Sodium Dodecyl Sulfate/chemistry , Spectroscopy, Fourier Transform Infrared/methods , Thermogravimetry/methods , Ultraviolet Rays , X-Ray Diffraction/methodsABSTRACT
ZHENG's acupuncture school in Gansu,represented by ZHENG Yulin and ZHENG Kuishan,is of great influence in China. ZHENG's acupuncture school originated from Huangdi Neijing(Inner Canon of Yellow Emperor) and Nanjing(Classic of Questioning),and shaped around Yuan Dynasty and Ming Dynasty. Professor ZHENG Kuishan has formed a unique "ZHENG's acupuncture" diagnosis and treatment system by inheritance and innovation. He clinically paid attention to basic training,obtaining qi and keeping spirit,as well as syndrome differentiation,reinforcing and reducing. Also,he took the priority the pressing hand with bilaterally needle manipulation. Besides,he thought important simplicity,innovation and acupoints selecting according to time. We inherited ZHENG's acupuncture from his family,teachers'techniques,international communication,college and university education and scientific research. In this article we prescribe the development,the inheritance and the protection measures of ZHENG's acupuncture school in terms of its origination,academic thought,and inheritance research,etc.,so as to provide references for further study and inheritance.
