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Characterization of several modified jute fibers using zeta-potential measurements |
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| Authors: | A. Bismarck J. Springer A. K. Mohanty G. Hinrichsen M. A. Khan |
| Affiliation: | Technische Universit?t Berlin Institut für Technische Chemie, TC6 Fachgebiet Makromolekulare Chemie Strasse des 17, Juni 135 D-10623 Berlin, Germany e-mail: spri0534@mailszrz.zrz.tu-berlin.de Tel.: +49-30-31422262 Fax: +49-30-31479237, DE Technische Universit?t Berlin Institut für Nichtmetallische Werkstoffe Polymerphysik, ES5 Englische Strasse 20 D-10587 Berlin, Germany, DE Bangladesh Atomic Energy Commission Radiation and Polymer Chemistry Laboratory Institute of Nuclear Science and Technology P.O. Box 3787 Dhaka, Bangladesh, BD |
| Abstract: | ζ-potential measurements using the streaming potential method were performed on several differently modified jute fibers. The time dependence of the ζ-potential measured in 1 × 10−3 M KCl solution offers the possibility to characterize the water-uptake behavior and the velocity constant of this process for almost all the jute fibers investigated. All the jute fibers contain, as expected, dissociable acidic surface functional groups as could be verified by measuring the pH dependence of the ζ-potential. Remarkably a peak (increase in the negative ζ-potential values) was detected while measuring the ζ–pH dependency. The origin of this peak is still questionable; however, it could be observed that this peak is a function of the degree of surface coverage of additional components, such as fats, waxes or grafted polymers, i.e. the accessibility of ether functions in the jute fiber surface. Received: 26 May 1999/Accepted in revised form: 28 September 1999 |
| Keywords: | Jute fiber Surface modification Zeta-potential |
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