Heat-resistant and soluble fluorinated poly(amide imide)s based on non-coplanar ortho-linked diimide-dicarboxylic acid

被引：33

作者：

Abouzari-Lotf, Ebrahim ^{[1
]}

Shockravi, Abbas ^{[2
]}

Javadi, Ali ^{[2
]}

机构：

[1] Tarbiat Moallem Univ Branch, ACECR, Membrane Res Grp, Tehran, Iran

[2] Tarbiat Moallem Univ, Fac Chem, Tehran 15614, Iran

来源：

POLYMER DEGRADATION AND STABILITY | 2011年 / 96卷 / 05期

关键词：

Fluorinated poly(amide imide)s; Non-coplanar; Thermal stability; Improved solubility; Dielectric constant; HYPERVALENT MOLECULES; AROMATIC POLYAMIDES; POLYIMIDES; SULFOXIDE; BENZENE;

D O I：

10.1016/j.polymdegradstab.2011.01.004

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of novel fluorinated heat-resistant poly(amide imide)s (PAIS) based on non-coplanar diimide-diacid monomer (DIDA) were synthesized and characterized. The poly(amide imide)s were obtained in high yields and possessed inherent viscosities in the range of 0.47-0.91 dL g(-1). All of the polymers were amorphous in nature, showed outstanding solubility and could be readily soluble in common organic solvents such as N,N-dimethylacetamide, N-methyl-2-pyrrolidinoned, dimethyl sulfoxide. N,N-dimethylformamide, pyridine and tetrahydrofuran. Glass transition temperatures were in the range of 221-263 degrees C, as determined by differential scanning calorimetry. Degradation temperatures for 10% weight loss occurred all above 520 degrees C and char yields was more than 50% at 700 degrees C in nitrogen atmosphere. Moreover, these PAIs possessed low refractive indexes (n = 1.58-1.59), birefringence (Delta n = 0.008-0.013), and dielectric constants (epsilon approximate to 2.5) due to the trifluoromethyl pendent groups and ortho-catenated aromatic rings that interrupt chain packing and increase free volume. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1022 / 1028

页数：7

共 39 条

[31] Synthesis and crystal structure determination of 2,2′-sulfinyl-bis(4-methyl phenol) and 2,2′-thio-bis(4-metryl phenol) [J].

Shockravi, A ;

Alizadeh, R ;

Aghabozorg, H ;

Moghimi, A ;

Rostami, E ;

Bavili, S .

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, 2003, 178 (12) :2519-2527

[32] Soluble and thermally stable polyamides bearing 1,1'-thiobis(2-naphthoxy) groups [J].

Shockravi, Abbas ;

Mehdipour-Ataei, Shahram ;

Abouzari-Lotf, Ebrahim ;

Zakeri, Masoomeh .

EUROPEAN POLYMER JOURNAL, 2007, 43 (02) :620-627

[33] Preparation and properties of new ortho-linked polyamide-imides bearing ether, sulfur, and trifluoromethyl linkages [J].

Shockravi, Abbas ;

Abouzari-Lotf, Ebrahim ;

Javadi, Ali ;

Atabaki, Fariborz .

EUROPEAN POLYMER JOURNAL, 2009, 45 (05) :1599-1606

[34] Synthesis and Properties of Novel Fluorinated Polyamides Based on Noncoplanar Sulfoxide Containing Aromatic Bis(ether amine) [J].

Shockravi, Abbas ;

Abouzari-Lotf, Ebrahim ;

Javadi, Ali ;

Taheri, Salman .

POLYMER JOURNAL, 2009, 41 (03) :174-180

[35] Synthesis and Properties of Organosoluble Fluorinated Polyamides Bearing 2-2′-Thio-bis(4-methyl Phenoxy) Groups [J].

Shockravi, Abbas ;

Abouzari-Lotf, Ebrahim ;

Javadi, Ali .

DESIGNED MONOMERS AND POLYMERS, 2009, 12 (02) :119-128

[36] PARA-LINKED, AROMATIC, THERMOTROPIC POLYESTERS WITH LOW MESOPHASE TEMPERATURES [J].

SINTA, R ;

GAUDIANA, RA ;

MINNS, RA ;

ROGERS, HG .

MACROMOLECULES, 1987, 20 (10) :2374-2382

[37]

Wilson D., 1990, POLYIMIDES

[38] STUDIES ON REACTIONS OF N-PHOSPHONIUM SALTS OF PYRIDINES .14. WHOLLY AROMATIC POLYAMIDES BY DIRECT POLYCONDENSATION REACTION BY USING PHOSPHITES IN PRESENCE OF METAL-SALTS [J].

YAMAZAKI, N ;

MATSUMOTO, M ;

HIGASHI, F .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1975, 13 (06) :1373-1380

[39] Fluorinated aromatic polyamides and poly(amide-imide)s: Synthesis and properties [J].

Yang, CP ;

Su, YY .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2005, 206 (19) :1947-1958

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