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(CTEI网讯) 会议:第十二届亚洲纺织会议暨2013中国纺织学术年会 时间:2013年10月24-26日 地点:上海东华大学 分会场:纤维与低维材料 报告题目:采用新型SANS光谱仪"TAIKAN"观测烤肉串状晶体结构形成过程 报告人:Go MATSUBA
报告英文简介: We carried out in very precise analysis of the shish and kebab structure based on small and wide angle neutron scattering (SANS and WANS) data with the TAIKAN spectrometer in J-PARC, JAEA, Tokai, Japan. We performed neutron scattering measurements in a wide range of scattering vector Q = 4π/sinθ (1 x 10-3~ 2 ?-1) on elongated PE blend of low molecular weight deuterated PE (dPE, 97 wt%) and high molecular weight hydrogenated PE (hPE, 3 wt%). We observed the quenched sample in the strain = 0.0, 0.1, 0.4, 1.2, 1.9 and 5.0. In low strain condition (strain = 0.07), the profile was isotropic, and so the effect of strain was not large then the lamellar crystals could not be oriented or broken. After yield point (strain = 0.6), the SANS profiles became anisotropic. The lamellar crystals were oriented stretched direction and the nm scaled shish-structure was grown. On further stretch, we observed 4-point scattering patterns. The lamellar crystals was tilted but the chains was parallel to the stretch direction.
【专题】第十二届亚洲纺织会议暨2013中国纺织学术年会 http://www.ctei.gov.cn/special/2013nzt/atc12/
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