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 16 of 16 for “"plasma polymerization"”.
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A plasma polymerization investigation and low temperature cascade arc plasma for polymeric surface modification
The plasma polymerization behavior of fluorocarbon systems was investigated using the monomers C₃F₆, C₂H₂F₄, C₄F₁₀ and C₃F₆O, which were compared to methane and butane, Section III. In Sections V and VII, surface modification treatments were performed on seven polymers using low temperature cascade …
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A fundamental investigation of the gas phase polymerization of styrene and vinyl type monomers in a low power inductively coupled 4 MHz RF plasma
"A study has been made on the plasma polymerization of styrene and vinyl type monomers in a cold, low power, inductively-coupled RF plasma. All vinyl type monomers yielded an insoluble, crosslinked film which was slightly colored. A kinetic study is reported for styrene. The effects of power level, …
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Functional and complex topological applications of plasma polymerized ultrathin films
This study is focused on the fabrication of plasma polymerized ultrathin films and the elucidation of their unique properties with an emphasis on the solvent-less, dry polymerization process to introduce post-deposition functionality, robustness, and shape preservation. Two major classes of …
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Surface Chemical Functionalization based on Plasma Techniques
… replaced by other techniques, in particular by plasma surface modification processes. Low-temperature plasmas are produced by electrical discharge sustained by gases at low-pressure condition. They consist of a mixture of highly reactive species, i.e., ions, radicals, electrons, photons and …
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MATRIX-ASSISTED LASER DESORPTION/IONIZATION (MALDI) TARGET MODIFICATION FOR ENHANCED PROTEOMICS ANALYSIS AND PLASMA POLYMER CHARACTERIZATION BY MALDI MASS SPECTROMETRY
… MALDI target, produced via radio frequency (rf) plasma deposited ethylenediamine (EDA), for on-target separation of complex protein mixtures. The third section develops a new approach for characterization of rf plasma-deposited bulk polymers by using MALDI MS. Previous studies in our group have …
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Plasma-assisted deposition of chromium, fluorocarbon and chromium/carbon/fluorine films on glass, polymer and metal substrates
Sputter deposition of chromium (Cr), plasma polymerization of hexafluoroethane (C$\sb2$F$\sb6$), and plasma-assisted deposition of chromium/carbon/fluorine (Cr/C/F) thin films onto glass, polytetrafluoroethylene (PTFE), and low carbon, cold rolled steel substrates has been studied. Depositions were …
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FTIR-ATR Characterization of Hydrogel, Polymer Films, Protein Immobilization and Benzotriazole Adsorption on Copper Surface
Plasma polymerization techniques were used to synthesize and deposit hydrogel on silicon (Si) substrate. Hydrogel is a network of polymer chains that are water-insoluble and has a high degree of flexibility. The various fields of applications of hydrogel include drug release, biosensors and tissue …
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Design and fabrication of nanostructures for thermal conductivity measurements and picosecond acoustics
… its atomic confinement in one dimension. Using plasma polymerization technique, sub-10 nm polymer film can be easily deposited by reactive ion etching system (RIE) with 80 sccm of CHF3 flow rate, 80W of RF power, and 150 mTorr of pressure. Bonding components of these polymers are also analyzed …
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Assessment of the biocompatibility, stability, and suitability of novel thermoresponsive films for the rapid generation of cellular constructs
… with a sol-gel, was optimized and compared to plasma polymerization deposition. Furthermore, proper storage conditions (e.g. temperature and relative humidity) for these films were investigated to increase stability of the films for using tissue culture conditions. To increase the speed of …
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Polymeric nitrogen by plasma enhanced chemical vapor deposition
… describes the first detailed study of a plasma-enhanced chemical vapor deposition (PECVD) approach to the synthesis of polymeric nitrogen. PECVD provides non-equilibrium conditions known to produce high pressure-temperature phases. Molecular nitrogen mixed with hydrogen and argon is used …
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Development of Multifunctional Nanoparticles for Cancer Therapy Applications
… delivery.</p><p> CNT surfaces were modified by plasma polymerization, providing functional groups for conjugation. Luminescent amine labeled quantum dots were fixed to the surface of the CNTs to aid in cancer diagnosis by in vivo imaging. Mice, injected with the quantum dot functionalized carbon …
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An Investigation of Plasma Pretreatments and Plasma Polymerized Thin Films for Titanium/Polyimide Adhesion
Plasma pretreatments are environmentally benign and energy efficient processes for modifying the surface chemistry of materials. In an effort to improve the strength of the titanium alloy/FM-5 polyimide adhesive joint for aerospace applications, oxygen plasma pretreatments and novel thin plasma …
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The effect of surface wettability on frost growth and densification on flat plates
… with coatings that have undergone conversion by plasma-polymerization to alter their wettability, are used to create surfaces that range from completely wetting to hydrophobic, with advancing contact angles as high as 110o. The coated aluminum plates are then subjected to frosting conditions in …
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Enhanced surface functionality via plasma modification and plasma deposition techniques to create more biologically relevant materials
… This dissertation examines the use of plasma processing as an alternative method for producing these highly functionalized surfaces on nanoparticles and polymeric scaffolds through the use of plasma modification and plasma enhanced chemical vapor deposition techniques. Specifically, …
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Depozice tenkých polymerních vrstev v povrchovém DBD výboji
Plazmová polymerace je vysoce efektivní metoda pro tvorbu tenkých vrstev s unikátními vlastnostmi, které mohou být přizpůsobeny specifickým aplikacím. Tato práce se zaměřuje na depozici tenkých oxazolinových vrstev, konkrétně vrstev na bázi 2ethyl2-oxazolinu metodou plazmové polymerace. Povrchová …
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Filmes biocompatíveis obtidos da polimerização a plasma das misturas dos monômeros HEMA/DEAEMA e THFMA/MOx para aplicações em drug delivery
Polímeros a plasma são uma classe de materiais que possuem aplicações em diversos tipos de indústrias, como biomédica, alimentícia, embalagens, eletrônica, farmaceutica, entre outras. Esses materiais possuem características que os diferem dos polímeros convencionais, como uma estrutura química …