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Physicochemical and electrokinetic properties of silica/lignin biocomposites

, : Physicochemical and electrokinetic properties of silica/lignin biocomposites. Carbohydrate Polymers 94(1): 345-355

A new method of synthesis of novel composites obtained from silica and Kraft lignin has been proposed. Silica used in the study was obtained by three methods (hydrolysis and condensation of tetraethoxysilane, precipitation in a nonpolar and polar medium with the use of sodium silicate). To extend the possible range of applications, the silica was preliminary modified with N-2-(aminoethyl)-3-aminopropyltrimethoxsysilane, and finally it was modified with Kraft lignin earlier oxidised with sodium periodate (lignin bonded to SiO2 by covalent interactions). The products physicochemical and electrokinetic properties were thoroughly analysed. The dispersive properties and surface morphology were evaluated on the basis of particle size distributions and SEM images. The stability of dispersion in inorganic-organic systems were characterised on the basis of the zeta potential, whose value also permitted concluding on the interactions between colloidal molecules dispersed in water solutions. The products were subjected to elemental analysis to get percentage contents of N, C, H, S elements and were also characterised by XPS and FT-IR spectroscopy. Results of the study are of practical importance in prospective applications of SiO2/lignin biocomposites.


PMID: 23544548

DOI: 10.1016/j.carbpol.2013.01.058

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Difonzo, N.; Wiesel, P.; Patel, A.; Marria, P.B.; Sim, C.U.; Pellacani, A.; Maemura, K.; Yet,; Perrella, M.A., 1999: Endotoxin-induced mortality is related to increased oxidative stress and multiple organ failure, not refractory hypotension, in heme oxygenase-1 deficient mice. Circulation 100(18 SUPPL ): I 236, Nov 2

Schmidt, K.; Wuth, E., 1963: Maize and field bean silage, a protein-rich winter feed.. The silage was of good quality and had no butyric acid. Proximate composition of maize alone, maize and field bean, 3: 4 or 1: 4, was dry matter 15.59, 18.75, 24.05, crude protein 1.52, 2.63, 3.98, crude fat 0.61, 0.66, 0.75, fibre 4.40, 5.36, 6.7...

Van Der Tjemara Ziekte, Veen R., 1938: Frenching in tobacco as a toxicity phenomenon. Meded Besoekisch Proejstat 61: 14-20

Brotzu G.; Musinu C.; Gessa R., 1968: Effect of pargyline cardio vasc epinephrine cardio vasc isoprenaline cardio vasc on the contractility of the myo cardium in vivo and in vitro guinea pig dog. Acta Anaesthesiologica (Padua) 18(SUPPL 3): 359-366

Boussina, I.; Gerster, J.C.; Epiney, J.; Fallet, G.H., 1975: A study of the incidence of articular chondrocalcinosis in Paget's disease of bone. Annals of the Rheumatic Diseases 34(2): 198-198

Yoshikawa, M.; Murakami, T.; Harada, E.; Murakami, N.; Yamahara, J.; Matsuda, H., 1996: Bioactive saponins and glycosides. VII. On the hypoglycemic principles from the root cortex of Aralia elata Seem.: structure related hypoglycemic activity of oleanolic acid oligoglycoside. The hypoglycemic component, elatoside E, was isolated from the root cortex of Aralia elata SEEM. (Araliaceae) together with elatoside F and eight known oleanolic acid glycosides. elatosides A and C, oleanolic acid 3-O-(alpha-L-arabinofuranosyl (1...

Glantz, R.M.; Nudelman, H.B.; Waldrop, B., 1984: Linear integration of convergent visual inputs in an oculomotor reflex pathway. The functional connectivity between identified visual interneurons [sustaining fibers (SF)] and oculomotor neurons was assessed by simultaneous recording and cross-correlation analysis. A small group of SFs exhibit excitatory functional connection...

Szabo, J., 2010: Safety. Study: keys to reducing needlestick injuries for residents. Hospitals & Health Networks 84(3): 17, 19-17, 19

Malone, P.S.; Kiely, E.M., 1990: Role of aortopexy in the management of primary tracheomalacia and tracheobronchomalacia. Between 1986 and 1988 aortopexy was carried out on 12 patients with primary tracheomalacia and five with tracheobronchomalacia; their median age was 5 months (1 month - 7 years). All patients had stridor, 14 had had cyanotic and apnoeic episodes,...

Janetzky, B.; God, R.; Bringmann, G.; Reichmann, H., 1995: 1-Trichloromethyl-1,2,3,4-tetrahydro-beta-carboline, a new inhibitor of complex I. The neurotoxic agent MPP+ is an artificial substance producing a syndrome very similar to that of idiopathic Parkinson's disease. There are also naturally occuring neurotoxic substances under discussion like the group of isoquinoline and beta...