𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Polyphenylquinoxalines containing pendant phenylethynyl groups: Preliminary mechanical properties

✍ Scribed by Paul M. Hergenrother

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
704 KB
Volume
28
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Polyphenylquinoxalines (PPQ's) containing various amounts of crosslinkable pendant phenylethynyl groups were prepared from the reaction of 3,3',4,4'-tetraaminodiphenyl ether, 4,4'-oxydibenzil, and 4,4'-oxybis(4"-phenylethynylbenzil). The distribution of the pendant phenylethynyl groups along the polymer chain was varied in an attempt to alter the properties of the polymers. Preliminary film, adhesive, and laminate properties of PPQ void of pendant crosslinkable groups and containing pendant phenylethynyl groups were determined. The thermally induced reaction of the phenylethynyl group crosslinked the polymer which resulted in better dimensional stability a t elevated temperatures.

📜 SIMILAR VOLUMES

Synthesis and properties of new crystall
Synthesis and properties of new crystalline poly(arylene ether)s containing pendant benzoyl groups
✍ Keiji Konno; Nobuo Deguchi; Koichiro Yonetake; Mitsuru Ueda; Patrick E. Cassidy; 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 181 KB 👁 2 views

Poly(arylene ether)s ( 3) containing pendant benzoyl groups were prepared by the aromatic substitution reaction of 2,5-difluoro-4-benzoylbenzophenone ( 2) with hydroquinone (1a) and methylhydroquinone (1b) in the presence of potassium carbonate in N,N-dimethylacetamide. The polycondensation proceede

Novel poly(aryl ether ketone)s containin
Novel poly(aryl ether ketone)s containing various pendant groups. II. Gas-transport properties
✍ Zhonggang Wang; Tianlu Chen; Jiping Xu 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB 👁 2 views

The gas transport of hydrogen, oxygen, nitrogen, carbon dioxide, and methane gases in a series of poly(aryl ether ketone)s was examined. These polymer membranes have a wide range of permeability coefficients and permselectivity coefficients, showing excellent gas-transport properties. The enhanced i

Preparation and properties of new photo-
Preparation and properties of new photo-functional polymers, 1. N-substituted maleimide/styrene copolymers containing pendant para-nitrobenzyl groups
✍ Wen-Yen Chiang; Jin-Yuh Lu 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 435 KB

## Abstract A new photo‐functional copolymer was designed by etherification or esterification of poly‐[__N__‐(4‐hydroxyphenyl)maleimide‐__co__‐styrene] or poly[__N__‐(4‐carboxyphenyl)maleimide‐__co__‐styrene] with __p__‐bromomethylnitrobenzene using 1,8‐diazabicyclo[5.4.0]‐undec‐7‐ene (DBU) as the