Thermal measurements on poly[2,2′-(m-phenylene)-5,5′-bibenzimidazole] fibers

被引：0

作者：

Menczel, J.D. ^{[1
]}

机构：

[1] Hoechst Research and Technology U.S., 86 Morris Ave., Summit, NJ 07901, United States

来源：

Journal of Thermal Analysis and Calorimetry | 2000年 / 59卷 / 03期

关键词：

Differential scanning calorimetry - Glass transition - High temperature properties - Organic polymers - Temperature - Thermodynamic stability;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Fibers drawn form poly[2,2′-(m-phenylene)-5,5′-bibenzimidazole] (PBI) were studied by DSC and DMA. PBI is a high temperature polymer Tg is between 387 and 450°C depending on the measurement technique used. The as-spun fiber is free of orientation. The oriented fiber exhibits considerable dependence on whether the DSC measurements were carried out in free-to-shrink or fixed-length modes. The β-relaxation is at 290°C, and was associated with loss of water. The γ-transition at 20°C was not identified, while the δ-transition at -90°C seems to correspond to rotation of the m-phenylene ring.

引用

页码：1023 / 1027

共 50 条

[31] POLY-2,2'-(META AND PARA-PHENYLENE)-5,5'-DIBENZOXAZODYLSULPHONES - PREPARATION AND BEHAVIOR
VOZNESENSKAYA, NN
SHALYGIN, GF
BRAZ, GI
YAKUBOVI.AY
VYSOKOMOLEKULYARNYE SOEDINENIYA SECTION A, 1970, 12 (06): : 1396 - +
[32] Synthesis of a 5,5′-linked poly(2,2′-biphenol).
Hu, QS
Agrawal, A
Lu, Y
Tang, ZY
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2003, 225 : U577 - U577
[33] Molecular simulations of neat, hydrated, and phosphoric acid-doped polybenzimidazoles. Part 1: Poly(2,2′-m-phenylene-5,5′-bibenzimidazole) (PBI), poly(2,5-benzimidazole) (ABPBI), and poly(p-phenylene benzobisimidazole) (PBDI)
Li, Shuo
Fried, J. R.
Colebrook, John
Burkhardt, Jonathan
POLYMER, 2010, 51 (23) : 5640 - 5648
[34] 2,2′,5,5′-Tetrachlorobenzidine
Ugono, Onome
Douglas, Marcel, Jr.
Rath, Nigam P.
Beatty, Alicia M.
ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2010, 66 : O2285 - U144
[35] PROTON MAGNETIC SPECTRA OF POLY(M-PHENYLENE BIBENZIMIDAZOLE)-LITHIUM CHLORIDE SOLUTIONS IN DIMETHYLACETAMIDE
RYAN, MT
HELMINIA.TE
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1973, (AUG26): : 115 - 115
[36] Aromatic polyesters derived from 5,5′-disubstituted bis(m-phenylene) crown ethers
Gibson, Harry W.
Nagvekar, Devdatt S.
Yamaguchi, Norimitsu
Delaviz, Yadollah
Jones, Jason W.
Balanda, Peter
Prasad, Abaneshwar
Marand, Herve'
POLYMER, 2018, 142 : 256 - 266
[37] Studies on the thermal behaviour and safety of a novel thermostable explosive 5,5′,6,6′-tetranitro-2,2′-bibenzimidazole
Golofit, Tomasz
Szala, Mateusz
Gutowski, Lukasz
Zybert, Magdalena
THERMOCHIMICA ACTA, 2018, 668 : 126 - 131
[38] NEW FINDINGS ON POLY[(2,2'-DITHIENYL)-5,5'-DIYLVINYLENE] (PDTE)
BRAGADIN, M
CESCON, P
BERLIN, A
PAGANI, GA
SANNICOLO, F
SYNTHETIC METALS, 1987, 18 (1-3) : 241 - 246
[39] 2,2'-DISUBSTITUTED 5,5'-BIPYRIMIDINES
PATER, R
JOURNAL OF HETEROCYCLIC CHEMISTRY, 1971, 8 (05) : 743 - &
[40] Improve the performance of proton exchange membranes based on sulfopropylated amino polyethersulfone/poly [2,2ʹ-(m-pyrazolidene)-5,5ʹ-bibenzimidazole] blend through SiO2 nanoparticles importing
Behzad Bagheri
Malihe Pooresmaeil
Hassan Namazi
Journal of Polymer Research, 2021, 28

← 1 2 3 4 5 →