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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of brominated polyethersulfones
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Preparation and characterization of brominated polyethersulfones

机译：溴化聚醚砜的制备与表征

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摘要

A novel derivative of aromatic polyethersulfone (PES) was obtained by bromination. Victrex PES was reacted with bromine under various conditions: in solution, in suspension, and without solvent; with or without catalyst; and at low and elevated temperatures. Practically no bromination occurred in solution; in the other cases, brominated PESs to various extents were obtained. The degree of substitution (DS) varied between 0.3 and 2.3. It was found that no catalyst is required for this reaction; the temperature, the concentrations of bromine and of polymer in the reaction mixture, and the duration of the reaction are the determinant factors of the DS. The modified polymers were characterized by elemental analysis, ~1H-NMR, ~(13)C-NMR, and PGC-MS, and their thermal properties were investigated by TGA and DSC methods. Further transformations of brominated PES as well as other new chemical reactions of PES will be the subject of later publications.
机译：通过溴化获得了一种新型的芳香族聚醚砜（PES）衍生物。 Victrex PES在各种条件下与溴反应：溶液，悬浮液和无溶剂;有或没有催化剂;以及在低温和高温下。溶液中几乎不发生溴化;在其他情况下，获得了不同程度的溴化PES。取代度（DS）在0.3至2.3之间变化。发现该反应不需要催化剂。温度，反应混合物中溴和聚合物的浓度以及反应持续时间是DS的决定因素。通过元素分析，〜1H-NMR，〜（13）C-NMR和PGC-MS对改性聚合物进行了表征，并通过TGA和DSC方法研究了它们的热性能。溴化PES的进一步转化以及PES的其他新化学反应将成为以后出版物的主题。

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