Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Crystalline content"”.
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A Quantitative Study of Drug Recrystallization in Drug-In-Adhesive Transdermal Patches Using Vibrational Spectroscopy
… a systematic approach to quantify the crystalline content of the API in DIA systems. This approach uses a novel method of preparing calibration standards and a spectroscopic method to reliably predict crystalline content in DIA patches. Spectroscopic tools, including Raman spectroscopy …
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The crystallisation of Poly (aryl ether etherketone) (PEEK) and its carbon fibre composites
… Poly aryl ether ether ketone (PEEK) is a semi-crystalline, high-performance engineering polymer whose properties can be enhanced through fibre reinforcement. The properties of PEEK and its composites are sensitive to changes in the crystalline content and morphology, which are influenced by the …
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Radiation response and optical characterization of carbon based thin-films prepared by saddle field plasma enhanced chemical vapor deposition
… (PECVD) method was used to prepare a set of nano-crystalline diamond samples. The relation between the deposition pressure, the gases mixing ratios and the resultant film characteristics were studied. The optical, microstructure and electronic properties of the prepared samples were studied using …
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Characterization of Pharmaceutical Materials by Thermal and Analytical Methods
… in drugs as well as their amorphous and crystalline content in the solid state have been distinguished by Thermal Analytical techniques, which include dielectric analysis (DEA), differential scanning calorimetry (DSC), and macro-photo-micrography. These techniques were used to establish a …
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Investigations of Structure–Property Relationships in Semicrystalline Thermoplastic Polymers: Blown Polyethylene Films and Polyacrylonitrile Copolymers
… three frost line heights (FLH), were produced. Crystalline orientation and tear resistance properties of the films were measured. Under appropriate conditions, the formation of two populations of lamellar stacks with their surface normals orthogonal to one another were observed. Increasing the …
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Chemical and physical stability of spray-dried and glass encapsulated spray-dried flavors stored below their glass transition temperatures
… is the use of a quenched melted glass-forming crystalline material as an extra layer of encapsulation for spray-dried (SD) flavors to further enhance stability and extend shelf life. The objectives of this research were to: 1) compare and contrast the chemical and physical stability of SD and …
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Investigating the effect of amorphization method on the physicochemical properties and heat- and moisture-induced crystallization behaviors of amorphous sucrose
… of amorphous sugars created from the same crystalline starting material. In general, amorphous materials can be produced via several different preparation routes, including supercooling from the melt (e.g., melt-quenching, spin-melt-quenching), precipitation from solution (e.g., …
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Crystalline Morphologies of Poly(butadiene)-b-Poly(ethylene oxide) Block Copolymers in n-Heptane
This thesis reports the development of micellar crystalline morphologies in a selective solvent. The phase diagram of solution morphologies as a function of the molecular composition of the semicrystalline poly(butadiene)-b-poly(ethylene oxide)(PB-b-PEO) block copolymers was investigated. The …