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Showing 1 to 7 of 7 for “"amorphous solid state"”.
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Statistical mechanics of the amorphous solid state of randomly crosslinked macromolecules
… together with sulfur, he obtained an elastic solid material. This liquid-solid transformation was later found to entail the random crosslinking of the linear macromolecules forming natural rubber, until the crosslink density is high enough that an equilibrium phase transition--the …
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Structural Dynamics of Amorphous Solid-State Macromolecular Materials at Terahertz Frequencies
Structural Dynamics of Amorphous Solid-State Macromolecular Materials at Terahertz Frequencies Talia Amira Shmool The aim of this thesis is to investigate the ability of terahertz time-domain spectroscopy (THz-TDS) to study complex amorphous solid-state systems. THz-TDS is a vibrational optical …
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Statistical Mechanics of the Amorphous Solid State of Randomly Cross-Linked Macromolecules
… theory of the elastic properties of the amorphous solid state is presented that accounts for both thermal fluctuations and quenched disorder. It is found that the shear modulus grows continuously from zero at the transition, and does so with the classical exponent, i.e., with the third …
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The Vulcanization Transition and the Amorphous Solid State It Yields: A Statistical Mechanical Perspective
… phase transition from the liquid to the amorphous solid state. In order to understand the origins and consequences of the universal aspects of this transition and the emergent solid state, we construct a minimal model in the spirit of the Landau approach to continuous phase transitions. …
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Cellulose Esters and Cellulose Ether Esters for Oral Drug Delivery Systems
Amorphous solid dispersion (ASD) is a popular method to increase drug solubility and consequently poor drug bioavailability. Cellulose ω-carboxyesters were designed and synthesized specifically for ASD preparations in Edgar lab that can meet the ASD expectations such as high Tg, recrystallization …
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Modeling and Prediction of Amorphous Solid Dispersion Formation Using a Molecular Descriptor
… drug development. Delivering a drug in its amorphous solid-state is a potential method to overcome this issue, since the amorphous form has increased apparent aqueous solubility. However, the amorphous state is only metastable, and is thermodynamically driven to recrystallize. As a result, …
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Enhanced Etoposide Solubility and Anticancer Activity using Complexation and Nanotechnology
… been prepared with three specific aims: (i) co-amorphous salt formation with drug complexation by L-Arginine (ARG), (ii) solid dispersion of V-P16 (C-VP-16) in Sodium Acetate (SA) crystal, and (iii) nanomicellar formulation (NMF) using D -α-Tocopherol polyethylene glycol 1000 succinate (Vitamin …