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POEGMA ‐b‐ PAA comb‐like polymer dispersant for Al 2 suspensions
Author(s) -
Wang Anqi,
Qiao Min,
Xu Jian,
Pan Yumei,
Ran Qianping,
Wu Shishan,
Chen Qiang
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43352
Subject(s) - dispersant , polymer , macromonomer , polymer chemistry , rheology , polyelectrolyte , chemical engineering , materials science , polymerization , composite material , dispersion (optics) , physics , optics , engineering
POEGMA ‐b‐ PAA comb‐like polymer is synthesized through RAFT polymerization, and it is employed as an efficient dispersant for Al 2 O 3 suspensions. The POEGMA ‐b‐ PAA polymer consists of PAA chains and POEGMA comb‐like chains. The former provide electrostatic attraction between Al 2 O 3 particles and polymer, while the latter extend to solution and maintain the stability of suspension due to strong steric hindrance. The adsorption is proven and the rheology behaviors of Al 2 O 3 suspensions are strongly improved. Different POEGMA ‐b‐ PAA polymers with different length of side chains have similar but not identical rheological properties. The polymer with the appropriate length of side chain provides the biggest improvement to rheological properties of Al 2 O 3 suspensions, such as apparent viscosity and granularity. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43352.