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首页> 外文会议>Conference on Applied Crystallography; 20060911-14; Wisla(PL) >Poly(ethylene oxide)/Styrene Ionomers Blends: Crystallization of Poly(ethylene oxide) Component Studied by Wide-angle X-ray Diffraction
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Poly(ethylene oxide)/Styrene Ionomers Blends: Crystallization of Poly(ethylene oxide) Component Studied by Wide-angle X-ray Diffraction

机译：聚环氧乙烷/苯乙烯离聚物共混物：广角X射线衍射研究聚环氧乙烷组分的结晶

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Wide-angle X-ray diffraction (WAXD) and the scanning electron microscopy (SEM) were used to determine the morphology of crystalline phase of blends of poly(ethylene-oxide) (PEO) and styrene-acrylic acid (S-AA) copolymers neutralized with sodium ions (Na~+). In this study, we investigated the effects of blend composition and the content of ionic groups in amorphous ionomers on the degree of crystallinity and the crystallite sizes. It was found that the degree of crystallinity of PEO in the blends decreases both with increasing S-ANa(6.4) content and with increasing ANa content. The sizes of PEO crystallites, measured both in the direction perpendicular and parallel to the polymer axis, are almost independent of ionic groups content in the amorphous component of the blends but they decrease with increasing S-ANa(6.4) content. For the blends containing small amounts of PEO the confined crystallization of this polymer were observed. The final crystalline morphology of these blends, observed by SEM method, is different in comparison to that formed without spatial confinement.
机译：广角X射线衍射（WAXD）和扫描电子显微镜（SEM）用于确定聚环氧乙烷（PEO）和苯乙烯-丙烯酸（S-AA）共聚物的共混物的结晶相形态用钠离子（Na〜+）中和。在这项研究中，我们研究了共混物组成和非晶离聚物中离子基团含量对结晶度和微晶尺寸的影响。发现掺混物中PEO的结晶度随S-ANa（6.4）含量的增加和随ANa含量的增加而降低。在垂直和平行于聚合物轴的方向上测量的PEO晶粒的尺寸几乎与共混物无定形组分中离子基团的含量无关，但随着S-ANa（6.4）含量的增加而减小。对于含有少量PEO的共混物，观察到该聚合物的受限结晶。与没有空间限制的情况相比，通过SEM方法观察到的这些混合物的最终晶体形态是不同的。

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