Viscosity molecular weight determination of polyadenylic acid
| dc.contributor.author | Usanmaz A. | |
| dc.contributor.author | Önal A.M. | |
| dc.contributor.author | Testereci H.N. | |
| dc.date.accessioned | 2020-06-25T15:13:09Z | |
| dc.date.available | 2020-06-25T15:13:09Z | |
| dc.date.issued | 1995 | |
| dc.department | Kırıkkale Üniversitesi | |
| dc.description.abstract | In this study viscosity measurements of polyadenylic acid (PolyA) in aqueous solution were carried out under different conditions. In the absence of any additives, the polymer degraded during flow through the capillary of a viscometer or when standing still. Degradation during the former was more severe. The degradation of polyadenylic acid can be prevented by addition of an electrolyte such as KC1 to increase the ionic strength. However, in this case the deviation from linearity was still considerable at most ionic strength values. The best fit to the Huggins and Kraemer equations was obtained using a Tris-EDTA buffer solution with a final pH of 7.65. Estimation from intrinsic viscosity and weight-average molecular weight values gave K and ? as 2.04 X 10 5 and 0.89 from the equation ? = KM ? . The difference between Huggins (k 1 ) and Kraemer (k' 1 ) constants was close to 0.50 for all measurements. © 1995, Taylor & Francis Group, LLC. All rights reserved. | en_US |
| dc.description.sponsorship | We are grateful to METU Research Fund for support of this work. One of us ( A.M.O. ) is grateful to Max-Planck Gesellschaft for a scholarship which enabled him to measure weight-average molecular weights by small-angle laser light scattering. | en_US |
| dc.identifier.doi | 10.1080/10601329508013683 | |
| dc.identifier.endpage | 562 | en_US |
| dc.identifier.issn | 10601325 | |
| dc.identifier.issue | 3 | en_US |
| dc.identifier.scopus | 2-s2.0-0029264122 | |
| dc.identifier.scopusquality | Q2 | |
| dc.identifier.startpage | 553 | en_US |
| dc.identifier.uri | https://doi.org/10.1080/10601329508013683 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12587/1608 | |
| dc.identifier.volume | 32 | en_US |
| dc.indekslendigikaynak | Scopus | |
| dc.language.iso | en | |
| dc.relation.ispartof | Journal of Macromolecular Science, Part A | |
| dc.relation.publicationcategory | Makale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.rights | info:eu-repo/semantics/closedAccess | en_US |
| dc.title | Viscosity molecular weight determination of polyadenylic acid | en_US |
| dc.type | Article |
