Journal
PURE AND APPLIED CHEMISTRY
Volume 89, Issue 1, Pages 161-171Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/pac-2016-1009
Keywords
biomaterials; lignin; microspheres; NMR; POC-16; Polymerization; surface properties; synthesis; thermal properties
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Funding
- People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7/under REA grant [PIRSES-GA-2013-612484]
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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 m(2)/g. The effects of the lignin component on the porous structure, shape, swelling and thermal properties of the microspheres were evaluated.
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