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 “"Cellulose derivative"”.
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Process-Structure-Property Relationships of Cellulose Derivative/Thermoplastic Urethane Polymer Composites
Cellulose-reinforced thermoplastic composites have garnered significant attention as sustainable alternatives to conventional petroleum-based materials, offering advantages such as biodegradability, mechanical reinforcement, and tunable functionality. These composites hold immense potential for …
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Studies of Macromolecule/Molecule Adsorption and Activity at Interfaces
… Fenton (CMF) non-enzymatic degradations on cellulose and chitin thin films was studied by liquid-phase QCM-D and AFM. QCM-D is a powerful tool to monitor the kinetics of hydrolysis of regenerated cellulose and chitin model surfaces. Results from QCM-D and AFM showed that the majority of the …
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Investigation of injection moulding for novel drug delivery systems. An investigation into the use of injection moulding to produce pharmaceutical dosage forms and to understand the relationship between materials, processing conditions and performance, in particular drug release and stability
… formulations were developed using a substituted cellulose derivative, hydroxypropyl methyl cellulose acetate succinate (HPMCAS) and a graft co-polymer (Soluplus®). BCS class II drugs ibuprofen and the felodipine were selected based on their physicochemical properties. In the present work, a …
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Development of an Adhesive Emulsion Hydrogel for Soft Tissue Reconstruction
… to achieve adhesion in a hydrated environment. Cellulose is the most abundant biopolymer on Earth and its derivatives have been approved by the FDA for use in a multitude of food, cosmetic, and biomedical products. Methylcellulose (MC), an amphiphilic cellulose derivative, may be methacrylated …
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EVALUATION OF HYDROLYTIC ENZYMES IN THE DESIGN OF ORAL DRUG DELIVERY SYSTEMS
… having as functional polymer hydroxypropyl methylcellulose (HPMC), a hydrophilic cellulose derivative which is substrate of the enzyme itself. Previous examples of the use of enzymes in drug delivery were investigated through a literature survey, which highlighted their high potential as …
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Development of an Injectable Methylcellulose Hydrogel System for Nucleus Pulposus Repair and Regeneration
… and characterize an injectable, bioactive, cellulose-based hydrogel system for NP replacement and repair. Methylcellulose (MC) is cellulose derivative that forms physically crosslinked gels at increasing temperatures. Methacrylation of MC allows for the formation of more robust, chemically …
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Cellulose fiber-reinforced thermoplastic composites: surface and adhesion characterization
… properties. A model consisting of amorphous cellulose spherical beads was used to eliminate the effects of morphology, composition, and fiber size and orientation; adhesion was studied only in terms of surface properties. The surface of the cellulose beads was modified by blending, by coating …
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Developments in White Pigment Production Using Biocompatible Cellulose-Based Materials
… alternatives. Over the last few years, cellulose-based materials have gained interest in different industrial sectors as well as in fundamental research, basically due to its abundance, biocompatibility, biodegradability, and environmental friendliness. This thesis presents the …