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New approach in the application of lignin for the synthesis of hybrid materials
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology.
2017 (English)In: Pure and Applied Chemistry, ISSN 0033-4545, E-ISSN 1365-3075, Vol. 89, no 1, p. 161-171Article in journal (Refereed) Published
Abstract [en]

In 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.

Place, publisher, year, edition, pages
Walter de Gruyter GmbH , 2017. Vol. 89, no 1, p. 161-171
Keyword [en]
biomaterials, lignin, microspheres, NMR, POC-16, Polymerization, surface properties, synthesis, thermal properties, Emulsification, Fourier transform infrared spectroscopy, Gas adsorption, Mesoporous materials, Nuclear magnetic resonance, Nuclear magnetic resonance spectroscopy, Porosity, Scanning electron microscopy, Swelling, Synthesis (chemical), Temperature, Thermodynamic properties, Attenuated total reflectance, Experimental protocols, Low-temperature nitrogen, Methacryloyl chloride, Nuclear magnetic resonance(NMR), Porous microspheres, Suspension polymerization, Nitrogen adsorption, Hybrid materials
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-207431DOI: 10.1515/pac-2016-1009ISI: 000396505000015Scopus ID: 2-s2.0-85016055782OAI: oai:DiVA.org:kth-207431DiVA, id: diva2:1098256
Note

QC 20170523

Available from: 2017-05-23 Created: 2017-05-23 Last updated: 2017-05-23Bibliographically approved

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Sevastyanova, Olena

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