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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received September 16, 2019
Accepted February 11, 2020

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Utilization of cross-linked polybutadiene nanoparticles for asymmetric membrane synthesis

Mehrdad Manteghian^† Farzaneh Sayyahpour

Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran

Manteghi@modares.ac.ir

Korean Journal of Chemical Engineering, July 2020, 37(7), 1195-1198(4), 10.1007/s11814-020-0513-6

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Abstract

This research synthesized polybutadiene nanoparticles and investigated the induction time for their nucleation under different supersaturations and their cross-linking to be utilized in an asymmetric membrane synthesis. Purchased (bulk) polybutadiene was dissolved in toluene and then ethanol was added dropwise to the solution as an antisolvent. The induction time, i.e., the time interval between adding the last drop of ethanol till appearance of a turbidity due to polybutadiene nucleation, was determined. The nucleation mechanism was investigated. Dependence of the induction time on supersaturation suggests that the mechanism of nucleation is primary. The correlation coefficient was obtained as 0.986. After formation, the nanoparticles were cross-linked with sodium persulfate as initiator and divinylbenzene as cross-linking agent. The SEM photos showed the formation of nanoparticles as well as their cross-linking. Such a finely porous layer can act as an effective support for active non-porous layers in applications such as gas separation. Also, based on the practical results, it was determined that for pressure equal 7 bar, temperature of 70 °C, membrane thickness of 1.15 mm and polybutadiene to divinyl benzene ratio of 1.5, the relative separation will be 93.58.

Keywords

Polybutadiene Nanoparticles Nucleation Induction Time Cross-linking

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