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首页> 外文期刊>Journal of Applied Polymer Science >Phototransparency and water vapor sorption properties of ABA-type triblock copolymers derived from 6FDA-TeMPD and poly(2-methyl-2-adamantylmethacrylate)
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Phototransparency and water vapor sorption properties of ABA-type triblock copolymers derived from 6FDA-TeMPD and poly(2-methyl-2-adamantylmethacrylate)

机译：6FDA-TeMPD和聚（2-甲基-2-金刚烷基甲基丙烯酸甲酯）衍生的ABA型三嵌段共聚物的光透明性和水蒸气吸附性能

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摘要

The phototransparency and water vapor sorption properties of ABA-type triblock copolymer membranes derived from 4,4-(hexafluoroisopropylidene) diphthalic anhydride-2,3,5,6-tetramethyl-1,4-phenylenediamine (PI) and poly(2-methyl-2-adamantylmethacrylate) (PMAdMA) were investigated, with focus on the effect of the adamantane component. The phototransparency of PMAdMA-block-PI-block-PMAdMA [Block(PI/PMAdMA)] was about 10-20% higher than that of poly(methyl methacrylate)-block-PI-block-Poly(methylmethacrylate) [Block(PI/PMMA)] because the high symmetric structure of adamantane inhibited photoabsorbance. The water vapor solubility of Block(PI/PMAdMA) decreased with increased PMAdMA because the PMAdMA had a hydrophobic property. Interestingly, in all relative-pressure regions, Block(PI/PMAdMA) with the least PMAdMA content showed a higher solubility coefficient than PI because the high mobility of PMAdMA in Block(PI/PMAdMA) resulted in additional sorption sites in the PI segment. A comparison of Block(PI/PMAdMA) with Block(PI/PMMA) in terms of relative pressure at the beginning of clustering further revealed that cluster formation in Block(PI/PMAdMA) was inhibited compared with Block(PI/PMMA) because bulky structure of adamantane restricted the mobility of the polymer main chain. (C) 2016 Wiley Periodicals, Inc.
机译：4,4-（六氟异亚丙基）二邻苯二甲酸酐-2,3,5,6-四甲基-1,4-苯二胺（PI）和聚（2-甲基）衍生的ABA型三嵌段共聚物膜的光透明性和水蒸气吸附特性研究了甲基丙烯酸-2-金刚烷基酯（PMAdMA），重点是金刚烷组分的作用。 PMAdMA-嵌段-PI-嵌段-PMAdMA [嵌段（PI / PMAdMA）]的光透明性比聚（甲基丙烯酸甲酯）-PI-嵌段-聚（甲基丙烯酸甲酯）[嵌段（PI）高约10-20％ / PMMA）]，因为金刚烷的高对称结构抑制了光吸收。 Block（PI / PMAdMA）的水蒸气溶解度随PMAdMA的增加而降低，因为PMAdMA具有疏水性。有趣的是，在所有相对压力区域，PMAdMA含量最低的嵌段（PI / PMAdMA）显示出比PI高的溶解度系数，因为PMAdMA在嵌段中的高迁移率（PI / PMAdMA）会导致PI段中出现更多的吸附位点。将Block（PI / PMAdMA）与Block（PI / PMMA）在聚类开始时的相对压力方面进行比较，进一步发现与Block（PI / PMMA）相比，Block（PI / PMAdMA）中的簇形成受到抑制金刚烷的结构限制了聚合物主链的迁移率。 （C）2016威利期刊公司

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