2022年8月22日 · The morphological and structural evolution of isotactic polypropylene (iPP) in thin and ultrathin films casted by hot-solution spin coating is investigated by means of atomic force microscopy (AFM) and grazing incidence wide angle X-ray scattering (GIWAXS).

摘 要:利用偏光显微镜(plm)和广角x 射线衍射法(xrd)对β 成核聚丙烯的结晶行为的表征，以及拉伸性 能和冲击性能测试研究的结果表明:β 成核剂的加入使聚丙烯中有β 晶型出现，随着成核剂加入量的增加，β 成核

In this paper, propylene–ethylene copolymer (POP) is used to toughen the PP-based shielding layer. The effects of POP content (40 parts, 50 parts and 60 parts) on the electrical and mechanical...

X-ray Diffraction (XRD) curves of the iPP sheets under different stretching conditions are shown in Figure 1. In comparison to the unstretched iPP sheet, the diffraction...

2014年2月1日 · Analysis of the phase iPP composition in the composite using XRD and DSC revealed a dominating α-phase with polymer molecules uniaxially oriented in the same direction as the nanotube alignment. Furthermore, kinetic in situ Synchrotron XRD studies verified that the enhanced crystallisation was induced mainly by shear stress occurring in the ...

2018年10月29日 · In this study, the lamellar orientation in iPP thin films on silicon wafer substrates was investigated using polarizing optical microscopy (POM), AFM, and GIWAXD. Transmission electron microscopy...

2014年10月16日 · A few thin films of iPP were treated with oxidizing solution at 90 °C. The crystalline properties were analyzed using XRD, and it had shown the presence of the α-monoclinic phases. The ATR-FTIR spectra had indicated that characteristic iPP peaks after thermo-oxidative chemical pre-treatment diminished sharply.

This is illustrated clearly in Fig. 1, which shows X-ray diffraction (XRD) data for mixtures of an impact polypropylene copolymer (Carmel Olefins S.A.; melt flow index, MFI, 25), PP, with either...

2013年3月20日 · Wide-angle XRD experiments of iPP and iPP composites filled by wollastonite with a β-nucleating surface were conducted with a Rigaku Geigerflex Model D/Max-IIIA rotating anode X-ray diffractometer. The radiation source was Graphite monochromatic Cu Kα radiation and the X-ray source was set at a voltage of 40 kV and a current of 20 mA.

2002年2月1日 · Our results represent the first documentation of the melting memory effect of β-iPP using real-time in situ X-ray diffraction studies. This paper also takes into consideration temperature–time kinetics such as the effect of the final fusion temperature and hold time on the in situ characterization.