PET纤维结晶度测定的研究

本文提出了一种改进的Ruland方法,用以计算PET纤维的结晶度,应用这种方法可以消除结晶不完善性对结晶度数值的影响,从而使由此得到的结晶度值能真正代表试样中晶体部分的百分含量,具有确切的物理意义。文中考虑了众多因子对衍射强度曲线的影响,提出了一种分离无定形衍射强度的新方法,同时还编写了一个FORTRAN程序,使用微处理机计算结晶度,取得了较满意的结果。

A STUDY ON THE MEASUREMENT OF THE CRYSTALLINITY OF PET FIBERS

A modified Ruland's method is presented for the calculation of PET fiber crystallinity. By applying the method, we can get rid of the effect of imperfectivity in crystal structure on the value of crystallinity, so that the value can really represent the percent content of crystal part in samples and possesses the correct meaning. The effect of many factors on the diffraction intensity profile is considered, meanwhile a new method for resolution of amorphous halo is given, and a FORTRAN program is also written for the calculation of crystallinity by the use of microcomputer. The results are satisfactory.