《Table 1 Experimental atomic compositions obtained from the areas of core level photoemission peaks

  提示：宽带有限、当前游客访问压缩模式

本系列图表出处文件名：随高清版一同展现

《Preparation and Properties of Poly(ethylene terephthalate )(PET) Coated by Chitosan( CS) Based on Sol-gel Method》

1. 获取 高清版本忘记账户？点击这里登录

1. 下载图表忘记账户？点击这里登录

XPS spectra of pristine PET and modified PET fiber are show n in Fig.2.The C1s and O1s peaks are found in pristine PET fiber w ith O/C atom ratio of 0.21（Table 1）.The XPS spectra of SE-PET fiber are similar to those of pristine PET fiber，w hile the oxygen content increased（O/C atom ratio=0.37，Table 1）.N1s peak can be observed，indicating the presence of CS on PET fiber.The Na1s peak can be explained by the residual of NaOH during CS gelation process.Figure 3presents the C1s core level spectra of three kinds of PET fiber.The spectra of C1s core level obtained from pristine PET fiber are show n in Fig.3（a）and can be deconvoluted into three peaks with binding energies at about 284.5 e V（C—C or C—H），286.5 e V（C—O），and 288.9 e V（O—CO），respectively.It is easy to find no new peak appears in Fig.3（b），indicating that PET and SE w ere bonded by hydrogen bonds and Van Edw ard force.M oreover，due to a large number of hydroxyl and ester groups on SE，the peaks intensity both at 286.5 eV（C—O）and288.9 eV（O—CO）are enhanced remarkably.What's more，it can be seen that a new peak at 288.2 eV emerges in Fig.3（c），w hich corresponds to N—CO bond，indicating that CS has been grafted onto SE-PET fiber successfully.