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首页> 外文期刊>Journal of Applied Polymer Science >MISCIBILITY AND PHASE BEHAVIOR IN BLENDS CONTAINING RANDOM COPOLYMERS OF POLY(ETHER ETHER KETONE) AND PHENOLPHTHALEIN POLY(ETHER ETHER KETONE)
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MISCIBILITY AND PHASE BEHAVIOR IN BLENDS CONTAINING RANDOM COPOLYMERS OF POLY(ETHER ETHER KETONE) AND PHENOLPHTHALEIN POLY(ETHER ETHER KETONE)

机译：含聚醚醚酮和酚酞聚醚醚酮的无规共混物的混溶性和相行为

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摘要

The miscibility and phase behavior of polysulfone (PSF) and poly(hydroxyether of bisphenol A) (phenoxy) with a series of copoly(ether ether ketone) (COPEEK), a random copolymer of poly(ether ether ketone) (PEEK), and phenolphthalein poly(ether ether ketone) (PEK-C) was studied using differential scanning calorimetry. A COPEEK copolymer containing 6 mol % ether ether ketone (EEK) repeat units is miscible with PSF, whereas copolymers containing 12 mol % EEK and more are not. COPEEK copolymers containing 6 and 12 mol % EEK are completely miscible with phenoxy, but those containing 24 mol % EEK and more are immiscible with phenoxy. Moreover, a copolymer containing 17 mol % EEK is partially miscible with phenoxy; the blends show two transitions in the midcomposition region and single transitions at either extreme. Two T(g)s were observed for the 50/50 blend of phenoxy with the copolymer containing 17 mol % EEK, whereas a single composition-dependent T-g appeared for all the other compositions. An FTIR study revealed that there exist hydrogen-bonding interactions between phenoxy and the copolymers. The strengths of the hydrogen-bonding interactions in the blends of the COPEEK copolymers containing 6 and 12 mol % EEK are the same as that in the phenoxy/PEK-C blend. However, for the blends of copolymers containing 17, 24, and 28 mol % EEK, the hydrogen-bonding interactions become increasingly unfavorable and the self-association of the hydroxyl groups of phenoxy is preferable as the content of EEK units in the copolymer increases. The observed miscibility was interpreted qualitatively in terms of the mean-field approach. (C) 1996 John Wiley & Sons, Inc. [References: 37]
机译：聚砜（PSF）与双酚A的聚羟基醚（苯氧基）与一系列共聚（醚醚酮）（COPEEK），聚醚醚酮的无规共聚物（PEEK）的混溶性和相行为用差示扫描量热法研究了酚酞聚醚醚酮（PEK-C）。含有6摩尔％醚醚酮（EEK）重复单元的COPEEK共聚物可与PSF混溶，而含有12摩尔％EEK和更高含量的共聚物则不能。含有6和12摩尔％EEK的COPEEK共聚物可以与苯氧基完全混溶，但是含有24摩尔％EEK和更多摩尔的EPE共聚物与苯氧基不溶混。此外，含有17摩尔％EEK的共聚物可与苯氧基部分混溶;共混物在中间成分区域显示两个过渡，在任一极端处显示单个过渡。对于苯氧基与含有17 mol％EEK的共聚物的50/50共混物，观察到两个T（g），而对于所有其他组合物，均出现了一个依赖于组分的T-g。 FTIR研究表明，苯氧基与共聚物之间存在氢键相互作用。包含6和12摩尔％EEK的COPEEK共聚物的共混物中氢键相互作用的强度与苯氧基/ PEK-C的共混物中的氢键相互作用的强度相同。然而，对于含有17、24和28mol％EEK的共聚物的共混物，氢键相互作用变得越来越不利，并且随着共聚物中EEK单元含量的增加，苯氧基的羟基的自缔合是优选的。根据平均场方法对观察到的混溶性进行了定性解释。 （C）1996 John Wiley＆Sons，Inc. [参考：37]

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