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 20 of 190 for “"biopolymers"”.
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Biopolymers for Bioartificial Pancreas
The concept of the bioartificial pancreas has developed substantially in the last decade, after the first successful islet transplantation in 2000. Islets are clusters of endocrine cells found in the pancreas. Amongst these cells, the insulin secreting beta cells are targeted by the immune system …
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Counterion Behavior in Biopolymers
Counterion behavior controls interactions between charged surfaces in aqueous environments, and can cause attraction between like charged objects. Mean field approaches to describing counterion behavior, such as the Poisson-Boltzmann formalism and Manning condensation theory, predict that charged …
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Synthesis and applications of aminated biopolymers
… The introduction of amino groups into biopolymers is one method to improve solubility in water and enhance other properties such as bioactivity. The solubility of polymers in water is advantageous and enables opportunities for applications in many industries. A simple, green and …
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Biodegradation, surface rugosities and biofilm coverage of biopolymers
… has resulted in the emergence of a wide range of biopolymers. The biodegradability of these alternative biopolymers requires investigation prior to their application in environmental and medical systems. This Thesis describes biodegradation of poly(3-hydroxybutyrate) (PHB), …
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Applications of Laser Light Scattering Spectroscopy to Biopolymers
Made available in DSpace on 2014-12-13T20:10:01Z (GMT). No. of bitstreams: 1 7709152.pdf: 4447494 bytes, checksum: bac48d8876e08a62eccaec7e3b8bbc1b (MD5) Previous issue date: 1976
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Modification of Biopolymers Using Palladium Oxidative Addition Complexes
… 1: Introduction to the Chemical Modification of Biopolymers This chapter introduces biopolymers as a discrete chemical entity via a brief historical account of the field of protein biochemistry. Other details such as the therapeutic role of key biopolymers, chemical modification strategies, …
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SYNTHESIS AND CHARACTERISATION OF NOVEL BIOPOLYMERS VIA CLICK CHEMISTRY
… Click reaction, for the synthesis of novel biopolymers with a broad range of potential medical/industrial applications. The strategy is to develop a powerful tool for the synthesis of libraries of materials, which will be discussed in separate chapters. Chapter one is a general introduction …
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The rheology and dynamic properties of biopolymers in a colloidal suspension
… many industries have now opted to use biopolymers in their products and operations. Biopolymers, such as xanthan gum, provide good suspension and stability to solutions and exhibit excellent resistance against high shear and high temperature environments. To further expand the …
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Structure and Property of Polymers and Biopolymers from Molecular Dynamic Simulations
<p>Natural and synthetic polymers and biopolymers have been studied for a variety of applications in food emulsion, biopharmaceutical purification, tissue engineering, and biosensor. The structure and property of polymers and biopolymers are critically important to determine their functions. …
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The role of biopolymers in thickening and dewatering of activated sludge
The purpose of this study was to investigate the qualitative and quantitative characteristics of high molecular weight exocellular materials (biopolymer) produced in biological waste treatment systems and examine the relationship between biopolymer and sludge settling and dewatering properties. The …
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Biosynthesis and characterisation of polyhydroxyalkanoate biopolymers and their oligomers for circular economy
Polyhydroxyalkanoates (PHAs) are biodegradable bioplastics that can potentially replace non-biodegradable petroleum-based plastics. However, the high production cost of PHAs which is associated with the high cost of starting substrate extraction solvents limits its integration into large scale …
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Dynamics Of Biopolymers On Nanomaterials Studied By Quasielastic Neutron Scattering And Mdsimulations
<p>Neutron scattering has been proved to be a powerful tool to study the dynamics of biological systems under various conditions. This thesis intends to utilize neutron scattering techniques, combining with MD simulations, to develop fundamental understanding of several biologically interesting …
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Growth of Platinum Clusters in Solution and on Biopolymers: The Microscopic Mechanisms
Thema der vorgelegten Dissertation ist der Mechanismus der Keimbildung und des Wachstums von Platinclustern in Lösung und auf Biopolymeren nach der Reduktion von Platin-Salzen. Die Untersuchung wird auf atomarer Skala durch ab-initio Molekulardynamik mit der Methode von Car und Parrinello …
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Single Molecule Force Extension Measurement on Semi-Flexible Biopolymers Using Magnetic Tweezers
Polymers are pervasive in modern society and are commonly encountered in a wide-range of industrial processes. Polymer chains exhibit complex dynamical phenomena in solutions undergoing convective transport, and a proper understanding of chain dynamics is key to optimizing process conditions. The …
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The Engineering and Development of pH-Responsive Biopolymers for Drug Delivery Applications
This dissertation describes experimental studies to understand the structure of biocompatible pH responsive polymers and their interaction with the biological system in order to design more effective entities for biomedical applications. A systemic approach was used to study the structure and …
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Liquid-liquid extraction of biopolymers : selective solubilization of proteins in reverse micelles
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1986.
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Α-HYDROXY FATTY ACIDS AND BIOPOLYMERS: NEW FATES FOR LIPID-ENRICHED FOOD SCRAPS
… products were involved in the production of new biopolymers. Specifically, saturated α-hydroxy fatty acids were used for the synthesis of polylactic acid analogues, with the intent to overcome the drawbacks related to the parent polymer (such as brittleness, low barrier properties and poor …
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Foam fractionation of biopolymers: studies of protein behaviour in analytical and preparative systems
The aim of the present work was to study the effects of molecular interactions between proteins upon foam quality in batch and continuous operations, and to investigate foam fractionation as a method of protein recovery from real biological feedstocks. Foam stability studies of model protein …
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Phase Separation in Highly Asymmetric Mixtures: From Charged Biopolymers to Binary Hard Disks
Finally, Chapter 5 treats the phase behavior of both additive and non-additive binary hard disk fluid mixtures, for very large size asymmetries. Using a systematic extrapolation in the non-additivity parameter I have been able to resolve the long-standing issue of fluid-fluid phase separation in …
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Tools for decoding the structure-function relationships of biopolymers in nanotechnology and glycobiology
… relationships governing complex biopolymers that have emerged as key players in biology, biotechnology, and medicine. Specifically: (1.) The first part of this thesis addresses the structure-function relationship of synthetic biodegradable plastics that are at the forefront of …
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