Abstract
Aggregation of polyaniline emeraldine base dissolved in polar aprotic solvents containing lithium chloride salt results in distorted non-Gaussian elution peaks in the size exclusion chromatogram. This results in significant error for the calculation of the weight average and number average molecular weights measured by size exclusion chromatography. We compare the effectiveness of LiCl, LiBr, and LiBF 4 , for limiting polymer aggregation in a high molecular weight sample of polyaniline, and thereby improving chromatographic peak shape. Weight average and number average molecular weight values were most accurately determined for dilute polyaniline in NMP solutions containing LiBF 4 .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
