Synthesis and characterization of highly-fluorinated colorless polyimides derived from 4,4′-((perfluoro-[1,1′-biphenyl]-4,4′-diyl)bis(oxy))bis(2,6-dimethylaniline) and aromatic dianhydrides

被引：81

作者：

Yeo, Hyeonuk ^{[1
]}

Goh, Munju ^{[1
]}

Ku, Bon-Cheol ^{[1
]}

You, Nam-Ho ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Inst Adv Composites Mat, Carbon Composite Mat Res Ctr, Wanju Gun 565905, Jeollabuk Do, South Korea

来源：

POLYMER | 2015年 / 76卷

关键词：

Polyimide; Refractive index; High fluorine content; Dielectric constant; Polymer optics; SOLUBLE POLYIMIDES; OPTICAL-PROPERTIES; TRANSPARENT; 2,2-BIS(TRIFLUOROMETHYL)-4,4-DIAMINOBIPHENYL;

D O I：

10.1016/j.polymer.2015.09.019

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The authors report the synthesis and characterization of a polyimide (PI) series derived from 4,4'-((perfluoro-[1,1'-biphenyl]-4,4'-diyl)bis(oxy))bis(2,6-dimethylaniline) (8FBPODMA). The 8FBPODMA monomer containing a perfluorobiphenyl group with two 2,6-dimethylaniline units connected by an ether bond was synthesized and polycondensed with several aromatic dianhydrides, including 4,4'-biphthalic anhydride (BPDA), 4,4'-oxydiphthalic anhydride (ODPA), pyromellitic dianhydride (PMDA), and 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), by the traditional two-step imidization procedure. All Pis shows high optical transparency, higher than 80% at 500 nm for a thickness of ca. 10 urn and good thermal properties. The thermal decomposition temperatures (T-10%) of the PIs are in the range of 507-527 degrees C and the glass transition temperatures (T-g) are in the range of 280-345 degrees C. In addition, the PIs have low refractive indices because of their high fluorine contents. In particular, 8FBPODMA-6FDA shows a very low refractive index (1.5389) and a low birefringence (0.0054) at 637 nm. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：280 / 286

页数：7

共 37 条

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