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首页> 外文期刊>Journal of Applied Polymer Science >Thermostabilizing Effect of Copper(II) Bromide on Poly(ethylene oxide) in Their Binary Blends
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Thermostabilizing Effect of Copper(II) Bromide on Poly(ethylene oxide) in Their Binary Blends

机译：溴化铜（II）对二元混合物中聚环氧乙烷的热稳定作用

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摘要

Thermoanalytical (thermogravimetry,differential thermogravimetry,and differential thermal analysis) and structural (IR spectroscopy,light microscopy,etc.)methods were employed to estimate the thermal behavior of binary blends of poly(ethylene oxide) (PEO) with copper(II) bromide (CuBr_2) of various concentrations under the conditions of a broad temperature interval.Solid residues obtained after heating the blends at different characteristic stages of the thermal destruction were also studied.CuBr_2 introduced in concentrations of 5-10% exhibited a significant thermostabilizing effect on PEO in an air medium,regardless of the mode of the blend preparation.No data about the formation of crystallizing complexes or new compunds prepared from the starting materials on heating the blends were obtained within the concentration range studied (0.1-40% CuBr_2).An assumption for the formation of associations between the oxyaen atoms of PEO and the metal ion,which obstruct the thermal oxidation processes to a certain degree,were made in order to explain the antioxidative mechanism of action of the inoraanic salt.
机译：使用热分析（热重分析，差示热重分析和差示热分析）和结构（红外光谱，光学显微镜等）方法来估算聚环氧乙烷（PEO）与溴化铜（II）的二元共混物的热行为。 （CuBr_2）在宽温度间隔条件下的不同浓度在空气介质中，无论共混物的制备方式如何。在所研究的浓度范围（0.1-40％CuBr_2）内，均未获得有关由结晶原料加热共混物而形成的结晶配合物或新化合物的数据。 PEO含氧原子与金属离子缔合的假设，阻碍了热氧化过程进行了一定程度的研究以解释稻ora盐的抗氧化作用机理。

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