Phase transitions of saturated triglycerides
نویسندگان
چکیده
منابع مشابه
Phase transitions of saturated triglycerides
The a--> P phase transition of Tristearin (SSS) has been investigated both by Differential Scanning Calorimetry and Small Angle X-Ray Diffraction as a function of temperature at the same heating rate ( 2 deglmin ) in order to elucidate either this transition occurs in the solid state or is melt mediated. INTRODUCTION iriglycerides display a complex monotropic polymorphism. They frequently exhib...
متن کاملModeling the solid-liquid phase transition in saturated triglycerides.
We investigated theoretically two competing published scenarios for the melting transition of the triglyceride trilaurin (TL): those of (1) Corkery et al. [Langmuir 23, 7241 (2007)], in which the average state of each TL molecule in the liquid phase is a discotic "Y" conformer whose three chains are dynamically twisted, with an average angle of approximately 120 degrees between them, and those ...
متن کاملComputer Modeling of Packing Arrangements and Transitions in Saturated..cis..Unsaturated Mixed Triglycerides
Conformational analysis of modeled cis-unsaturated chains in triunsaturated and symmetrical monounsaturated triglycerides has identified pseudo-linear chain orientations that allow lower molecular mechanical energies than are possible with conventional cis-chains. Energy plots recorded during bond rotations near the double bond show that energy barriers between linear and normal cis-configurati...
متن کاملCrystal Packing of Odd-Chain Saturated Triglycerides
Single crystal electron diffraction d a ta from an odd-chain trig lyceride, glycerol trihep tadecanoate, are compared w ith the known structure o f the even-chain hom o-acid triglycerides. Both class es o f triglycerides are found to resem ble one ano ther in chain packing: they both have the sam e chain tilt (61 °) for the /?-polymorph and, further, the o rien ta tio n o f the T|| subcell in ...
متن کاملNUMERICAL SIMULATIONS OF THE PHASE TRANSITIONS IN CLUSTERS
We have studied the phase transitions in atomic clusters by molecular dynamics simulation, assuming Lennard-Jones interatomic pair potential. Calculations are performed by DAP parallel computer. The results are analyzed by simulating their orientational distribution plots (dot-plot), and neutron diffraction patterns. It is shown that all the main features of the bulk phase transitions are e...
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ژورنال
عنوان ژورنال: Le Journal de Physique IV
سال: 1993
ISSN: 1155-4339
DOI: 10.1051/jp4:1993825