物理化学学报 >> 1996, Vol. 12 >> Issue (01): 39-43.doi: 10.3866/PKU.WHXB19960109

研究论文 上一篇    下一篇

用对称透射二维WAXS强度研究PET取向非晶态结构

韩甫田,陈济舟,王俊桥,伍宣池,宾仁茂   

  1. 中国广州分析测试中心,广州 510070|天津理工学院,天津 300191
  • 收稿日期:1995-01-24 修回日期:1995-06-16 发布日期:1996-01-15
  • 通讯作者: 韩甫田

Strcuture of Oriented Non-crystalline PET Studied with Two-dimensional WAXS Intensity by Symmetrical Transmission

Han Fu-Tian,Chen Ji-Zhou,Wang Jun-Qiao,Wu Xuan-Chi,Bin Ren-Mao   

  1. Guangdong Institute of Analysis,Guangzhou 510070|Tianjin Institute of Science and Technology,Tianjin 300191
  • Received:1995-01-24 Revised:1995-06-16 Published:1996-01-15
  • Contact: Han Fu-Tian

摘要:

用对称透射法,测试聚酯(PET)取向非晶试样的二维广角X射线散射相干强度Ie(K,α),将不同方位角α上的Ie(K,α)非晶重叠峰曲线进行计算机分解,获得分子链间原子散射引起的二个峰为A(K=0.126)、B(K=0.169);分子链内原子散射引起的五个峰分别为C(K=0.304)、D(K=0.553)、E(K=0.374)、F(K=0.465)、G(K=0.606),K单位为nm-1.分析了它们的结构起源以及主要峰参数与α的关系,得到PET取向非晶态的细微结构信息.

关键词: 对称透射, 方位角, 广角X射线散射, 聚酯, 取向非晶态结构

Abstract:

The two dimensional Wide Angle X-ray Scattering (WAXS) coherent intensity of oriented non-crystalline polyethylene tetrephthalate (PET) is determined by Symmetrical Transmission method; Besides, self-compiled WAXS Multi-peak Separation program 90 (MPS90) is used as well to separate the overlapped peaks at WAXS coherent intensity curves obtained at different azimuthal angles, thereof resulting in the two peaks caused by intermolecular atomic scattering, A(K=0.126) and B(K=0.169), and the other fives by intermolecular atomic scattering such as: C(K=0.304), D(K=0.553), E(K=0.374), F(K=0.465) and G(K=0.606)(K unit: nm-1), of which the origin of structure and the curves of primary peak parameters as a function of azimuthal angles are analysed in detail, thus obtaining the fine structural imformation from oriented non-crystalline PET.

Key words: Symmetrical transmission, Azimuthal angle, Wide angle X-ray scattering, PET, Oriented non-crystalline structure