title: Polyethylene glycol diacrylate-based supermacroporous monolithic cryogel as high-performance liquid chromatography stationary phase for protein and polymeric nanoparticle separation.
abstract: A supermacroporous monolithic cryogel was directly prepared by in situ cryo-copolymerization in a stainless steel cartridge (70mmx5.0mm I.D.) using methacrylic acid (MAA) as functional monomer and polyethylene glycol diacrylate (PEGDA) as crosslinker. The highly crosslinked (90%, molar ratio) poly(MAA-PEGDA) cryogel had more uniform supermacropores with a mean diameter of 25microm compared to the poly(acrylamide)-based cryogels. The viability of poly(MAA-PEGDA) cryogel as a medium was demonstrated for separations of lysozyme from chicken egg white (CEW) and water-soluble poly(N-isopropylacrylamide-co-3-(dimethylamino) propyl methacrylamide) (NIPAM-DMAPMA) nanoparticles from its crude reaction solution. The dynamic binding capacities of lysozyme and the polymeric nanoparticles were 4.51x10(-3)micromol/ml and 33.4microg/ml, respectively. The lysozyme recovered from the above separations had a purity of more than 85%, and retained 90% of its enzymatic activity.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), The Key Laboratory of Bioorganic Chemistry & Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Xu
authors.forename: Yuan
authors.initials: Y
authors.lastname: Liang
authors.forename: Jianbin
authors.initials: J
authors.lastname: Wang
authors.forename: Meiping
authors.initials: M
authors.lastname: Zhao
authors.forename: Yuanzong
authors.initials: Y
authors.lastname: Li
mesh_terms: D001798:Blood Proteins / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D059985:Cryogels; D005353:Fibronectins / Q000737:chemistry*; D020100:Hydrogels; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011506:Proteins / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D001798:Blood Proteins; D059985:Cryogels; D005353:Fibronectins; D020100:Hydrogels; D011506:Proteins; C437167:poly(ethylene glycol)diacrylate; D011092:Polyethylene Glycols