The preparation of D-phenylalanine imprinted microbeads by a novel method of modified suspension polymerization

2006 ◽  
Vol 11 (6) ◽  
pp. 503-509 ◽  
Author(s):  
Hamayun Khan ◽  
Joong Kon Park
Keyword(s):  
Suspension Polymerization ◽  
Novel Method ◽  
Modified Suspension Polymerization

scholarly journals New approach in the application of lignin for the synthesis of hybrid materials

2017 ◽  
Vol 89 (1) ◽  
pp. 161-171 ◽  
Author(s):  
Beata Podkościelna ◽  
Marta Goliszek ◽  
Olena Sevastyanova
Keyword(s):  
Suspension Polymerization ◽  
Nitrogen Adsorption ◽  
Experimental Protocol ◽  
New Approach ◽  
Surface Areas ◽  
Adsorption Data ◽  
Novel Method ◽  
Derivatives Of ◽  
Polymerization Method ◽  
Nitrogen Adsorption Data

AbstractIn this study, a novel method for the synthesis of hybrid, porous microspheres, including divinylbenzene (DVB), triethoxyvinylsilane (TEVS) and methacrylated lignin (L-Met), is presented. The methacrylic derivatives of kraft lignin were obtained by reaction with methacryloyl chloride according to a new experimental protocol. The course of the modification of lignin was confirmed by attenuated total reflectance (ATR-FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The emulsion-suspension polymerization method was employed to obtain copolymers of DVD, TEVS and L-Met in spherical forms. The porous structures and morphologies of the obtained lignin-containing functionalized microspheres were investigated by low-temperature nitrogen adsorption data and scanning electron microscopy (SEM). The microspheres are demonstrated to be mesoporous materials with specific surface areas in the range of 430–520 m2/g. The effects of the lignin component on the porous structure, shape, swelling and thermal properties of the microspheres were evaluated.

Magnetite loaded cross-linked polystyrene composite particles prepared by modified suspension polymerization and their potential use as adsorbent for arsenic(III)

2017 ◽  
Vol 25 (7) ◽  
pp. 671-679 ◽  
Author(s):  
Hasan Ahmad ◽  
Mostafa Kaiyum Sharafat ◽  
Mohammad Ashraful Alam ◽  
Mohammad Mahbubor Rahman ◽  
Klaus Tauer ◽  
...  
Keyword(s):  
Suspension Polymerization ◽  
Composite Particles ◽  
Modified Suspension Polymerization ◽  
Potential Use

Preparation of lignin-containing porous microspheres through the copolymerization of lignin acrylate derivatives with styrene and divinylbenzene

Holzforschung ◽  
2015 ◽  
Vol 69 (6) ◽  
pp. 769-776 ◽  
Author(s):  
Beata Podkościelna ◽  
Magdalena Sobiesiak ◽  
Yadong Zhao ◽  
Barbara Gawdzik ◽  
Olena Sevastyanova
Keyword(s):  
Acrylic Acid ◽  
Pore Structure ◽  
Solid Phase ◽  
Suspension Polymerization ◽  
Molar Ratio ◽  
Attenuated Total Reflectance ◽  
Total Reflectance ◽  
Phenolic Pollutants ◽  
Novel Method ◽  
Constant Molar Ratio

Abstract A novel method for synthesizing microspheres from lignin or lignin acrylate derivatives through copolymerization with styrene (St) and divinylbenzene (DVB) has been developed. The copolymers were obtained by the emulsion-suspension polymerization with a constant molar ratio of DVB to St of 1:1 (w/w) and different amounts of lignin or its derivatives. The morphologies of the obtained materials were examined by scanning electron microscopy. Two types of lignin modifications were performed to introduce vinyl groups into the lignin molecules: modification with acrylic acid and modification with epichlorohydrin plus acrylic acid. The course of modification was confirmed by attenuated total reflectance Fourier transform infrared spectroscopy. The thermal stability and degradation behavior of the obtained microspheres were investigated by thermogravimetric analysis, and the pore structure was characterized via nitrogen sorption experiments. Owing to the presence of specific functional groups and the well-developed pore structure, the obtained Lignin-St-DVB microspheres may have potential application as specific sorbents for the removal of phenolic pollutants from water, as demonstrated by the solid-phase extraction technique.

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