Block copolymer characterization by gel permeation chromatography

The purpose of this investigation was to propose a method to determine the composition distribution, on one hand, and the molecular weight distribution, on the other hand, for block copolymers. The technique selected to determine this kind of information was Gel Permeation Chromatography, because, since its introduction in 1964, it has become the most powerful tool for the rapid characterization of homopolymers. The proposed method is introduced by considering a dual-approach: composition distribution (calibration of detectors with composition) and molecular weight distribution (calibration of columns with composition). The absence of heterointeractions in block copolymers led to a behavior which depends solely on the elution behavior of the corresponding homopolymers. Finally, it is concluded that all this meaningful information about block copolymers can be perfectly obtained when adequate raw Gel Permeation Chromatography data handling, taking into account composition, is done.

Name thesis:degree_name

M.S.

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Chemical Engineering

Department dc:contributor.department

Chemical Engineering

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1977

Author dc:creator

• Dominguez, Carlos

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/10919/109880

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/109880