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. , YU , K.N. , KIM , J.H. , P ARK , S.J. , LEE , H.J. , KIM , S.H. , P ARK , Y.K. , P ARK , Y.H. , H WANG , C.Y. , KIM , Y.K. , LEE , Y.S. , J EONG , D.H. & C HO , M.H. ( 2007 ): Antimicrobial effects of silver nanoparticles
developed a silica-supported Pd nanoparticle catalyst and compared its dechlorination activity with a conventional Pd/C. We adopted p -chloroanisole and DDE as the substrates; the former is often used as a simple model of chlorinated dioxins, and the latter
processability, and loss of mechanical properties very early during degradation. To improve the properties of polymeric biomaterials, composites and mainly nanocomposites made from synthetic/natural polymers and ceramic nanoparticles may become good alternative
. 173 , 677 – 702 . 5. Bystrzejewska-Piotrowska , G. , Golimowski , J. , Urban , P. L. ( 2009 ) Nanoparticles: their potential toxicity, waste and environmental
conditions is attracting considerable attention, especially for intermediates that contain multiple, sensitive functional groups. A variety of catalysts, including polymer-stabilized metal nanoparticles [ 3 – 5 ], supported metallic catalysts [ 6 – 8 ], and
nanoparticles that could be used for high density magnetic recording sensors etc., has attracted many workers toward the cubic spinel-structured cobalt ferrite of variable particle size in which Co 2+ and Fe 3+ occupy tetrahedral/octahedral sites in the fcc
Crystallisation of triacylglycerols in nanoparticles
Effect of dispersion and polar lipids
Abstract
The crystallisation properties of a mixture of triacylglycerols (TG), cocoa butter (CB) 75%/miglyol 25%, were investigated on cooling at 0.5 °C/min using differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The influence of (i) the dispersion of TG within nanoparticles stabilised by proteins, and of (ii) the presence of polar lipids were characterised. In bulk, crystallisation of TG successively occurred with a α 2L (49.3 Å) structure, then the formation of longitudinal stackings of 44.5 and 34.5 Å of β′ form was interpreted as co-crystallisation of TG from CB and miglyol. The dispersion of TG in nanoparticles of about 400 nm induced a higher supercooling and changed their crystallisation properties. The formation of α 49.2 Å and β′ 45 Å structures corresponded to the segregation of TG from CB in solid phases while TG from miglyol remained liquid. Phospholipids with saturated fatty acid chains affected the thermal properties of TG, which demonstrated their localisation at the surface of the nanoparticles. DSC and XRD revealed to be very sensitive and adapted methods to increase the knowledge about the mechanisms of crystallisation in emulsion.
explosively with atmospheric oxygen liberating enormous amount of energy which is sufficient to oxidatively decompose the hydrazinated complex into its respective metal oxide. The formation of monophasic Co 0.8 Zn 0.2 Fe 2 O 4 nanoparticles soon after the
transfer using alumina particles compared to the conventional fluid. Das et al. [ 13 ] experimentally studied the effect of adding alumina nanoparticles based water nanofluid on the behavior of the pool-boiling curve and heat transfer coefficient from
Introduction Solid lipid nanoparticles (SLN) consist of solid lipids in nanosized range dispersed in aqueous medium have attracted increasing attention in recent years as an alternative drug delivery system to the traditional
