Mechanical behavior of crystal lattice strains detected by xhyphen;ray diffraction technique in a polymer spherulite to external excitation

摘要

A estimation of crystal lattice strain detected by dynamic xhyphen;ray diffraction technique is proposed by using a linear isothermal viscoelastic theory. In the actual calculation, the results with regard to the polar angle dependences of the apparent dynamic crystal lattice strain as well as the crystal lattice strain normalized by sample strain, are obtained and are tested by the experimental ones. In addition, from the theoretical calculation, the distribution of the inhyphen;phase component of crystal lattice strain is affected by the magnitude with regard to the real part of mechanical quantity such as viscoelastic Youngrsquo;s modulus, while that of the outhyphen;ofhyphen;phase component is affected by the magnitude with regard to the imaginary part of the mechanical quantity.