脉冲射频等离子体聚烯丙胺薄膜的制备及表征

采用脉冲射频等离子体聚合方法在不锈钢基底上制备了聚烯丙胺薄膜,红外光谱和X射线光电子能谱分析表明:烯丙胺单体经脉冲等离子体射频放电所制备的聚合薄膜均含有胺基(-NH2)官能团。低占空比的聚合薄膜中所含的-NH2浓度增多,薄膜的亲水性提高。薄膜的聚合速率随占空比的增加呈先增大后减小的规律。聚合薄膜与不锈钢基底间结合力也随着脉冲占空比的增加,呈先上升后下降的变化,且占空比为60%时具有最大的膜基结合力。

Synthesis and Characterization of Polyallylamine Film Polymerized by Pulsed RF Plasma

In order to prepare the plasma polymerized films which contain the functional group,polyallylamine films were synthesized on the stainless steel substrate by pulsed RF(Radio Frequency).The analysis of FT-IR(Fourier transform infrared spectroscopy) and XPS(X-ray photoelectron spectroscopy) indicate that there are amine groups(-NH2) existing in the polymerized films,and the concentration of-NH2 is higher under low duty cycle.This film has a good wettability at lower duty cycle.When the duty cycle changes from 20% to 100%,the deposition rates of thin films take on a well-regulated variety and this is integrated effect by polymerization and etching with the increase of the duty cycle.The coalescent force between the polymerized films and stainless steel(Lc) increases at the first stage and reaches the maximum around the PPAa3-duty cycle of 60%.