中国物理B ›› 2012, Vol. 21 ›› Issue (10): 105201-105201.doi: 10.1088/1674-1056/21/10/105201
• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇 下一篇
陈光良a, 郑旭a, 吕国华b, 张朝霞a, Sylvain Masseyc, Wilson Smithc, Michael Tatoulianc, 杨思泽b
Chen Guang-Liang (陈光良)a, Zheng Xu (郑旭)a, Lü Guo-Hua (吕国华)b, Zhang Zhao-Xia (张朝霞)a, Sylvain Masseyc, Wilson Smithc, Michael Tatoulianc, Yang Si-Ze (杨思泽)b
摘要: A simple dielectric barrier discharge (DBD) jet array was designed with a liquid electrode and helium gas. The characteristics of the jet array discharge and the preliminary polymerization with acrylic acid (AA) monomer were presented. The plasma reactor can produce a cold jet array with a gas temperature lower than 315 K, using an applied discharge power between 6 W and 30 W (Vdis×Idis). A silk fibroin film (SFF) was modified using the jet array and AA monomer, and the treated SFF samples were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and contact angle (CA). The deposition rate of the poly acrylic acid (PAA) was able to reach 300 nm/min, and the surface roughness and energy increased with the AA flow rate. The FTIR results indicate that the modified SFF had more carboxyl groups (-COOH) than the original SFF. This latter characteristic allowed the modified SFF to immobilize more quantities of antimicrobial peptide (AP, LL-37) which inhibited the Escherichia coli (E. Coli) effectively.
中图分类号: (Plasma torches)