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.
Results
Showing 1 to 20 of 33 for “"Functional Polymers"”.
-
Functional Polymers Containing Semi-Rigid Alternating Sequences
Alternating copolymers represent a special class of copolymers in which the two comonomers copolymerize in a regular alternating sequence along the polymer chain. Of particular interest in our group are the stilbene-maleic anhydride/maleimide alternating copolymers. These copolymers possess …
-
Functional polymers for biomedical application : synthesis and applications
… derivatives. It was anticipated the resulting functional polyamides would biodegrade to physiologically acceptable compounds and show pH dependant solubility could be used for biomedical applications ranging from enteric coatings to hydrosoluble drug delivery vehicles capable of targeting areas …
-
New functional polymers for sensors, smart materials and solar cells
Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers has enabled control over their properties and morphology, leading to the …
-
Multi-functional polymers from polyamines and functional five-membered cyclic carbonates
… dissertation is concerned with the synthesis of functional polymers prepared by ring-opening reaction of functional five-membered cyclic carbonates with polyamines. The functionality of the polymers defines their properties and their application: multi-functional poly(ethylene imine)s for …
-
Synthesis and characterization of functional polymers with controlled architecture and their application as anticorrosion primers
… the synthesis and use of carefully designed functional poly(methacrylate) copolymers as a primer coating addressing one of the major failure mechanisms responsible for corrosion: delamination of the coating at the steel-coating interface. Novel polymers were designed and synthesized to …
-
3D PRINTING OF ELASTOMERS AND APPLICATIONS
The demand for the soft functional polymers is very high in our nowadays soft electronics applications. These applications are like flexible touch screens, electronic skins, and energy storage, just to name few. To manufacture these functional polymers by traditional ways to fit in these …
-
Synthesis and transformation reactions of engineering polymers
… of utilizing the procedure to synthesize functionally terminated controlled molecular weight oligomers. High molecular weight tetramethyl substituted bis A arylene ether ketones, sulfones, and nitrile functional polyarylethers have been synthesized successfully. The ketone containing …
-
The preparation of cucurbit[8]uril-based hydrogels for delivery applications
… Its addition to an aqueous solution of guest-functional polymers leads to the formation of cross-links and hydrogels. The first results chapter of this thesis explores the relationship between cross-link dynamics and molecular cargo delivery. The release rate increases with increasing rate of …
-
Replication of Sequence Information in Recognition-Encoded Synthetic Polymers
… be used in directed evolution processes to yield functional polymers. If directed evolution could be applied to synthetic oligomers, then new classes of functional polymers might be discovered. To reach this goal, new methods for replication of information-encoded synthetic oligomers must be …
-
Entwicklung von Polymermembranen für die Abtrennung von Kohlendioxid aus Gasströmen
The development of new polymers for selective separation of carbon dioxide with polymeric membranes is based upon the fact that amino groups in aqueous matrices facilitate the transportation of carbon dioxide. Therefore polymethacrylates and polyacrylates with different amino groups in side chains, …
-
Polymers containing calix[4]arenes and triptycenes : new syntheses, properties and applications
… development of new synthetic methods for making polymers with complex molecular structures. Calix[4]arenes and triptycenes are the two major molecular building blocks for constructing the functional polymers. Unusual properties, with the emphasis on mechanical and sensory properties, are …
-
INVESTIGATION OF PROCESSING-STRUCTURE-PROPERTY RELATIONS IN VAPOR PHASE MODIFIED CELLULOSIC MATERIALS
… used in our daily lives for paper products and functional polymers. The cellulose molecule has a high density of hydroxyl groups, which causes strong intra-/inter- fiber hydrogen bonding. These abundant hydroxyl groups make cellulose super-hydrophilic and difficult to disperse or dissolve in …
-
Surface Modification of Nanoparticles Using Controlled Radical Polymerization For Designed Interfaces
… Chain Transfer Polymerization (RAFT) to graft polymers from the surface of colloidal silica nanoparticles for incorporation in polymers to make composites. </p> <p>In the first part of this work, a new strategy based on Marcomolecular Design via Interchange of Xanthates (MADIX) polymerization …
-
Dendronized Amphiphilic Copolymers Synthesized from Methacrylate Derivatives as Potential Topical Microbicides
… to target low molecular weight (<10,000 g/mol) polymers. Dendronized homopolymers were prepared from MIII with varying MMP concentrations (0–10 mol%). MALDI-TOF MS characterized the homopolymer prepared with 10 mol% MMP (Mn = 2,481 g/mol). In the presence of MMP, MIII (5 to 25 mol%) was …
-
FABRICATION OF FUNCTIONAL NANOSTRUCTURED POLYMERS BASED ON THERMOTROPIC AND LYOTROPIC LIQUID CRYSTALS DERIVED FROM SUSTAINABLE RESOURCES
… molecular-level properties and offering more functional interfaces for interactions compared to bulk structures, enhancing performance across various technical fields. Through self-assembly, liquid crystal (LC) mesophases offer a route to achieve nanostructured polymers, a promising …
-
Non-Covalent Interactions in Block Copolymers Synthesized via Living Polymerization Techniques
… ionic aggregation were studied in block and end-functional polymers synthesized via living polymerization techniques such as nitroxide mediated polymerization and anionic polymerization. The influence of non-covalent association on the structure/property relationships of these materials were …
-
The synthesis of well-defined functional homo- and block copolymers in aqueous media via Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization
… well as the preparation of fluorescent labeled polymers. Their stability against hydrolysis in water was studied, and compared with the most frequently employed water-soluble RAFT agent 4-cyano-4-thiobenzoylsulfanylpentanoic acid dithiobenzoate, using UV-Vis and 1H-NMR spectroscopy. An improved …
-
Synthesis and Characterization of Novel Polyethers and Polypeptides for Use in Biomedicine and Magnetic Resonance Imaging
Copolymers that contain terminal or pendent functional groups have great potential in the biomedical area due to their biocompatibility and tunable properties.1-3 In this research, two vinyl functional epoxides, vinyldimethylsilylpropyl glycidyl ether (VSiGE) and ethoxy vinyl glycidyl ether (EVGE), …
-
Accessing Model, Functional Polyolefins and Polyolefin Copolymers with Ring-Opening Metathesis Polymerization
… due to their low cost and excellent properties. Functionalized polyolefins with polar functional groups are desirable targets for more complex materials benefiting from the excellent properties of polyolefins, but these materials are challenging to synthesize using traditional polymerization …
-
Development of polyurethane-like materials based on proteins
Polymers are now the most widely use man-made substances and have become omnipresent in every aspect of our lives. In particular, polyurethanes (PU), for providing energy savings, safety, lightness and comfort. Nevertheless, their synthesis require the use of petroleum-based polyols and toxic …
Page 1 of 2