Effect of isomeric oxydiphenylene diamine on the water sorption behavior of high temperature polyimide thin films
Effect of isomeric oxydiphenylene diamine on the water sorption behavior of high temperature polyimide thin films
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DOI：
10.1295/polymj.31.324
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发表时间：
1999-01-01
期刊：
影响因子：
2.8
通讯作者：
Han, JS
中科院分区：
文献类型：
--
作者：
Seo, J;Han, HS;Han, JS
研究了氧代二苯二胺（ODA）异构体3，4 ′ ODA和4，4 ′ ODA对均苯四甲酸二酐（PMDA）-ODA、联苯四甲酸二酐（BPDA）-ODA和3，3 ′，4，4 ′-苯并二酮四甲酸二酐（BTDA）-ODA体系吸水行为的影响。和4，4 '-六氟异亚丙基二邻苯二甲酸酐（6 FDA）-ODA聚酰亚胺进行了重量分析。水的吸附曲线相当好地拟合Fickian扩散，尽管它们的形态异质性的聚酰亚胺薄膜。然而，异构的ODA对吸水性的影响是完全不同的，这取决于聚酰亚胺的种类。水和4，4 'ODA基聚酰亚胺膜的互扩散系数在3.0 × 10（-10）cm（2）s（-1）~ 15.2 × 10（-10）cm（2）s（-1）范围内变化，且其大小顺序为：BPD，4- 4.4' ODA < BTDA-4，4 'ODA-PMDA-4.4' ODA <6 FDA-4，4 'ODA。吸水率在1.62重量%至3.25重量%之间变化。BPDA-4，4'ODA < 6FDA-4，4'ODA < PMDA-4.4'ODA < BTDA-4.4'ODA。然而，3，4 'ODA基聚酰亚胺膜的扩散系数在6.7 × 10（-10）cm（2）s（-1）至8.6 × 10（-10）cm（2）s（-1）的范围内变化。BPDA-3.4'ODA < 6FDA-3.4'ODA-BTDA-3.4'ODA-PMDA-3，4'ODA。吸水率在2.02 ~ 2.98wt%范围内变化，且呈递增顺序。6 FDA-3，4 'ODA < BPDA-3，4' ODA < BTDA-3，4 'ODA < PMDA-3，4' ODA。聚酰亚胺具有较高的链序，高度结晶的结构，和较小的平均分子间距离显示相对较低的扩散系数和水的平衡吸收。
The effects of isomeric oxydiphenylene diamines (ODA), 3,4'ODA and 4,4'ODA, on the water sorption behavior in pyromellitic dianhydride (PMDA)-ODA, biphenyltetracarboxylic dianhydride (BPDA)-ODA, 3,3',4,4'-benzo phenonetetracarboxylic dianhydride (BTDA)-ODA. and 4,4'-hexafluoroisoyropylidenediphthalic anhydride (6FDA)-ODA polyimides were gravimetrically investigated. Water sorption curves were reasonably well fitted by Fickian diffusion despite their morphological heterogeneities in the polyimide thin films. However, the effects of isomeric ODA on the water sorption were quite different depending upon the sort of polyimide. The mutual diffusion coefficient of water and 4,4'ODA based polyimide films varies in the range of 3.0 x 10(-10) cm(2) s(-1) to 15.2 x 10(-10) cm(2) s(-1), and is in the increasing order: BPD,4-4.4'ODA < BTDA-4,4'ODA-PMDA-4.4'ODA < 6FDA-4,4'ODA. The water uptake varies from 1.62wt% to 3.25 wt%. and is in the increasing order: BPDA-4,4'ODA < 6FDA-4,4'ODA < PMDA-4.4'ODA < BTDA-4.4'ODA. However, the diffusion coefficient for 3,4'ODA based polyimide films varies in the range of 6.7 x 10(-10) cm(2) s(-1) to 8.6 x 10(-10) cm(2) s(-1). and is in the increasing order: BPDA-3.4'ODA < 6FDA-3.4'ODA-BTDA-3.4'ODA-PMDA-3,4'ODA. Thr water uptake varies from 2.02 wt% to 2.98 wt%, and is in the increasing order. 6FDA-3,4'ODA < BPDA-3,4'ODA < BTDA-3,4'ODA < PMDA-3,4'ODA. Polyimides having higher chain order, highly crystalline structure, and smaller mean intermolecular distance revealed relatively lower diffusion coefficients and water uptakes in equilibrium.