We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Synthesis of a hyperbranched polymer with a dihydroxyl nucleus and its demulsifying performance.
- Authors
Feng, Xuening; Jiang, Shanhong; Li, Bin; Yang, Ying; Shen, Liwei; Zhang, Zejun; Yuan, Huaikui; Ye, Fan; Mi, Yuanzhu
- Abstract
[Display omitted] • PDBM demulsifier with lower concentration can achieve a good demulsification effect in a short settling time at 25 ℃. • The effect of hydroxyl groups at the central core on the demulsification was verified. • PDBM demulsifier can be obtained by a simple "one-pot" method. In this work, a hyperbranched polymer (PDBM) was prepared via a simple "one-pot" reaction process using diethyl bis(hydroxymethyl)malonate as the centronucleus. Its structure and thermal stability were characterized by 1H NMR, FT-IR and TG-DTG. The factors affecting the demulsifying performance such as the dosage of demulsifier, standing time and salinity were systematically studied in diesel-in-water (O/W) emulsion at 25 ℃. After adding 100 mg/L of PDBM and standing for 60 min at 25 ℃, the light transmittance of separated water (TSW) could up to 91.4%. In addition, the properties of interface and surface, zeta potential, microscopic images and droplet size distribution provided the clues for possible demulsifying mechanism. To further exploring the mechanism, the polymer (PDM) with a similar structure was also synthesized by the same method. It showed that the hydroxyl groups at the centronucleus of PDBM played a key role in the demulsification process of the O/W emulsion.
- Subjects
POLYMERIZATION; DEMULSIFICATION; HYDROXYL group; ZETA potential; THERMAL stability
- Publication
Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A, 2021, Vol 174, p267
- ISSN
0263-8762
- Publication type
Article
- DOI
10.1016/j.cherd.2021.08.014