Graduate Thesis Or Dissertation
 

Polybenzimidazole synthesis from compounds with sulfonate ester linkages

Public Deposited

Contenu téléchargeable

Télécharger le fichier PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/rb68xg08x

Descriptions

Attribute NameValues
Creator
Abstract
  • This investigation of polybenzimidazole synthesis involved the two-stage low temperature solution polymerization of dialdehydes, One-step polycondensation of dialdehydes, two-stage melt polycondensation of diesters, and one-step solution polycondensation of diesters with 3,3'-diaminobenzidine. Dialdehyde or diester monomers were prepared which contained aromatic units which were hooked together with sulfonate linkages. Polymerization of these monomers with 3,3'-diaminobenzidine resulted in moderate viscosities of 0.4-0.8 dl/g in DMSO at 19°C. The polybenzimidazoles obtained appear to be linear; most of them when tested immediately after preparation, were largely soluble in certain acidic or dipolar approtic solvents. Films, obtained by dissolving the polymer in dipolar approtic solvents such as N,N-dimethylacetamide or N,N-dimethyl formamide, were flexible, clear, yellow to brown in color, and foldable depending upon which monomers and which polymerization methods were used.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Déclaration de droits
Publisher
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces

Des relations

Parents:

This work has no parents.

Dans Collection:

Articles

La vignette Titre Date de téléchargement Visibilité actes
file details SeckinTurgay1988.pdf 2017-08-16 Public Télécharger