نتایج جستجو برای: poly hema

تعداد نتایج: 81092  

2013
Kabil Özcan Tozak Mahmut Erzengin Idris Sargin Nuri Ünlü

In this study, the DNA sorption performance of diatomite-Zn(II) embedded supermacroporous monolithic p(HEMA) cryogels were investigated for the purpose of designing a novel adsorbent that can be utilized for DNA purification, separation and immunoadsorption studies such as removal of anti-dsDNA antibodies from systemic lupus erythematosus (SLE) patient plasma. Poly(2-hydroxyethyl methacrylate) ...

Journal: :Materials science & engineering. C, Materials for biological applications 2013
Bilgen Osman Lokman Uzun Necati Beşirli Adil Denizli

In this study, we prepared surface plasmon resonance (SPR) sensor using the molecular imprinting technique for myoglobin detection in human serum. For this purpose, we synthesized myoglobin imprinted poly(hydroxyethyl methacrylate-N-methacryloyl-l-tryptophan methyl ester) [poly(HEMA-MATrp)] nanofilm on the surface of SPR sensor. We also synthesized non-imprinted poly(HEMA-MATrp) nanofilm withou...

2012
Jia-Hao Syu Yu-Cheng Chiu Wen-Chang Chen Henrich Cheng

meso -2,6-Dichlorophenyltripyrrinone (TPN-Cl 2 ), a probe molecule for zinc II ions, is dispersed in a polymer host. The red fl uorescence peak at 620 nm appears when the molecule forms a complex with zinc at its center. TPNCl 2 has a high selectivity for zinc II and tolerates many common metal ions present in the human body. The probe molecules are blended with a hydrogel polymer, poly(2-hydro...

2010
HOSSEIN OMIDIAN KINAM PARK

Superporous hydrogels (SPHs), based on poly(2-hydroxyethyl methacrylate) (PHEMA), were prepared by adding minute amounts of an ioncomplexable hydrophilic acrylic acid. PHEMA SPHs are generally strong, but their swelling is minimal. To improve the swelling, different poly(HEMA-coacrylic acid) hydrogels were polymerized and crosslinked, then physically treated with divalent calcium and trivalent ...

Journal: :Turkish Journal of Chemistry 2022

The primary aim of this article was to improve the solubility and bioavailability drugs nifedipine, niclosamide, furosemide due their poor dissolution rate. Therefore, these require improvement in rate formulation development, especially solid dosage forms such as hydrogels capsules. Hydrogel structures were synthesized by using a biocompatible, nontoxic, protective pure 2-hydroxy ethyl methacr...

2014
Ana M. Díez-Pascual Peter S. Shuttleworth

This review deals with the layer-by-layer (LbL) assembly of polyelectrolyte multilayers of biopolymers, polypeptides (i.e., poly-l-lysine/poly-l-glutamic acid) and polysaccharides (i.e., chitosan/dextran sulphate/sodium alginate), onto thermo- and/or pH-responsive micro- and nano-gels such as those based on synthetic poly(N-isopropylacrylamide) (PNIPAM) and poly(acrylic acid) (PAA) or biodegrad...

2010
Palapparambil Sunny Gils Debajyoti Ray Prafulla Kumar Sahoo

In order to modify the xanthan gum (XG) polysaccharide and to develop the hydrogels meant for the drug delivery, we have prepared XG-g-poly [HEMA-co-AA] superporous hydrogel (SPH) through chemical cross-linking by graft copolymerization of 2-hydroxyethyl methacrylate (HEMA) and acrylic acid (AA) on to XG via redox initiator system of ammonium persulfate (APS) and N, N, N’, N’tetramethylethylene...

1999
L. Ferreira M. M. Vidal C.F.G.C. Geraldes M. H. Gil

Sugar-based hydrogels were prepared by non-selective modification of sucrose with the introduction of vinyl groups. Sucrose was reacted with glycidyl methacrylate (1:1 molar ratio) in DMSO and in the presence of 4-(N,N-dimethylamino)pyridine (4-DMAP) as catalyst. The structure of the product (SucMA) was established using H NMR, H DQF-COSY NMR and C NMR analysis. Gels were prepared by copolymeri...

2017
Sylwia Sekula-Neuner Monica de Freitas Lea-Marie Tröster Tobias Jochum Pavel A Levkin Michael Hirtz Harald Fuchs

Nanoporous poly(2-hydroxyethyl methacrylate-co-ethylene dimethacrylate) (HEMA-EDMA) is used as a 3D mesh for spotting lipid arrays. Its porous structure is an ideal matrix for lipid ink to infiltrate, resulting in higher fluorescent signal intensity as compared to similar arrays on strictly 2D substrates like glass. The embedded lipid arrays show high stability against washing steps, while stil...

Journal: :Dental materials journal 2013
Kazuhiro Yoshida Tadafumi Kurogi Tetsurou Torisu Ikuya Watanabe Hiroshi Murata

This study evaluated the effects of the fluorinated monomer of 2,2,2-trifluoroethyl methacrylate (TFEMA) on the properties of autopolymerized hard direct denture reline resins. Iso-butyl methacrylate (i-BMA) and 2-hydroxyethyl methacrylate (2-HEMA) containing 30% TFEMA by weight were used as monomers, while poly(ethyl methacrylate) was used as a powder. Setting characteristics, dynamic mechanic...

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