通过sol-gel技术合成了聚氧化乙烯(PEO)和 二氧化硅(SiO2)的有机-无机杂化材料,通过DSC和WAXD方法测试了杂化样品中PEO的结晶 度、结晶结构和(120)晶面的微晶尺寸,说明了PEO在该杂化体系中的受限结晶行为。
Poly(ethylene oxide)(PEO) and silica (SiO2) organic-inorganic hybrid materials have been synthesized by sol-gel appro ach. The crystallization behavior of PEO in hybrid system has been investigated by DSC and WAXD methods. The result shows that the mass percentage of crystallin e PEO reduces with the increase of silica in PEO and SiO2 organic-inorganic hybrid samples, PEO is not crystallizable when the concentration of PEO is lower than 50 mass% in this system. The DSC and WAXD results show that the crystalline behavior of PEO in PEO／SiO2 hybrid system has been rigid confined, the reason is that PEO is absorbed by the micropores silica.
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