Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
ID:
Password:
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

Agents/Distributors
 Regional Subscription Agents/Distributors
 
Current Trends in Polymer Science   Volumes    Volume 4 
Abstract
Synthesis and characterization of novel polyamides, polyimides and polyamide-imides
Der-Jang Liaw, Been-Yang Liaw
Pages: 225 - 239
Number of pages: 15
Current Trends in Polymer Science
Volume 4 

Copyright © 1999 Research Trends. All rights reserved

ABSTRACT
 
A variety of concepts for structural modification such as flexible bridging linkages, bulky substituents, noncoplanar conformation unit, and bulky pendent group have been used to enhance the solubility and processability of polyamides, polyimides and polyamide-imides which were derived from several new diamines, dicarboxylic acids and diimide-dicarboxylic acids. It was observed that the incorporation of flexible units, such as aryl ether, hexafluoroisopropylidene, sulfonyl, isopropylidene, oxyethylene and hydroxyl units, and bulky substituents such as tert-butyl group, and noncoplanar conformation such as 2,2`-dimethyl-4,4`-biphenyl unit, as well as of pendent groups such as cyclododecylidene, adamantane, tricyclodecane and diphenylmethylene, enhances the solubility and processability of these polymers. In comparison with the effect of various structural modifications on the polymer properties, the incorporation of rigid and bulky pendent group such as adamantane group led to the most success. The introduction of sulfonyl and oxyethylene units in the polymer backbone showed relatively less satisfied results.
Buy this Article


 
search


E-Commerce
Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Login
Search Products
Browse in Alphabetical Order : Journals
Series/Books
Browse by Subject Classification : Journals
Series/Books

Miscellaneous
Ordering Information Ordering Information
Downloadable forms Downloadable Forms