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Poly(aspartic acid) surface modification of macroporous poly(glycidyl methacrylate) microspheres
Author(s) -
Wu Xiaoyuan,
Jiang Wenwei,
Luo Yu,
Li Jingjing
Publication year - 2019
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.47441
Subject(s) - glycidyl methacrylate , fourier transform infrared spectroscopy , materials science , thermogravimetric analysis , ethylene glycol dimethacrylate , adsorption , porosimetry , polymer chemistry , surface modification , nuclear chemistry , chemical engineering , methacrylate , copolymer , chemistry , porosity , organic chemistry , polymer , composite material , methacrylic acid , porous medium , engineering
Novel macroporous, hydrophilic microspheres with a surface layer of crosslinked poly(aspartic acid) were synthesized. In this study, macroporous poly(glycidyl methacrylate‐ co ‐ethylene glycol dimethacrylate) [poly(GMA‐co‐EGDMA)] microspheres with pore size around 370 nm were first obtained through the surfactant reverse micelle swelling method, and the poly(GMA‐co‐EGDMA) was aminated by ethylene diamine to form poly(GMA‐NH 2 ). The polysuccinimide was grafted onto the surface of poly(GMA‐NH 2 ) microspheres and crosslinked by hexamethylendiamine and γ‐aminopropyltriethoxysilane, respectively, and then hydrolyzed to obtain the poly(aspartic acid)‐functionalized macroporous microspheres. The functionalized hydrophilic microspheres were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X‐ray photoelectron spectroscopy (XPS), thermogravimetric analysis, mercury porosimetry, and elemental analysis. The metal ion adsorption capacity was also studied. The FTIR, XPS, and elemental analysis confirmed the poly(aspartic acid) functionalization of the poly(GMA‐co‐EGDMA) microspheres. SEM and mercury porosimetry showed there was little effect of this surface chemical modification on microsphere porosity, and the obtained macroporous microspheres exhibited excellent thermal stability and adsorption for Ag(I), presenting great potential for applications in adsorption, fixation, and separation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47441.