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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
131

Review of natural rubber biosynthesis and synthesis of model intermediates for the preparation of a macroinitiator for the in vitro synthesis of polyisobutylene-polyisoprene diblock copolymer

Gautriaud, Emilie. January 2006 (has links)
Thesis (M.S.)--University of Akron, Dept. of Polymer Science, 2006. / "December, 2006." Title from electronic thesis title page (viewed 12/31/2008) Advisor, Judit E. Puskas; Faculty Reader, Coleen Pugh; Department Chair, Mark D. Foster; Dean of the College, Frank N. Kelley; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
132

Application of dynamic mechanical analyzer to the study of natural rubber /

Prasin Sawadcitang, Krisda Suchiva, January 1982 (has links) (PDF)
Thesis (M.Sc. (Clinical Physics))--Mahidol University, 1982.
133

Manufacture and application of rubber belting

Harbison, Lynn. January 1937 (has links) (PDF)
Thesis (Professional Degree)--University of Missouri, School of Mines and Metallurgy, 1937. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed April 22, 2010) Includes bibliographical references (p. 52-58) and index (p. 59-60).
134

Morphology and mechanical properties of polystyrene/polyethylene blends and its toughening mechanism /

Cheng, Hok Yan. January 2002 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002. / Includes bibliographical references (leaves 93-100). Also available in electronic version. Access restricted to campus users.
135

Beiträge zur Kenntnis des Kautschuks und der Guttapercha

Zieser, Waldemar. January 1907 (has links)
Thesis (Ph. D.)--Universität Bern. / Includes bibliographical references.
136

Diffusion of radioactively tagged hydrocarbons in rubber-like polymers

Chen, Stephen Pokwok, January 1968 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.
137

Value stream mapping of a rubber products manufacturer

Carr, Jeffrey M. January 2006 (has links) (PDF)
Thesis, PlanB (M.S.)--University of Wisconsin--Stout, 2006. / Includes bibliographical references.
138

Dispositivo microfluídico de borracha natural (LAB-ON-A-CHIP) /

Cabrera, Flávio Camargo. January 2015 (has links)
Orientador: Aldo Eloizo Job / Banca: Deuber Lincon da Silva Agostini / Banca: Frank Nelson Crespilho / Banca: Ivan Helmuth Bechtold / Banca: Lucas Fugikawa Santos / Resumo: Esta tese apresenta um novo conceito de dispositivo microfluídico flexível, utilizando a borracha natural como material alternativo, de baixo custo, flexível e elástico, para a preparação de plataformas lab-on-a-chip. A preparação do dispositivo é realizada com a dispersão do látex sobre o molde. Este é construído em placas de acrílico (PMMA - Poli-metilmetacrilato) contendo a configuração do dispositivo. O látex deve recobrir toda a estrutura, utilizando o método casting. Posteriormente, o molde contendo látex é submetido a tratamento térmico para a formação das membranas de borracha natural. As membranas retiradas do molde replicam a configuração do dispositivo em sua superfície. Filmes de policloreto de vinil (PVC) são utilizados como recobrimento interno a fim de evitar a absorção de água e a liberação de composição proteica das membranas de borracha natural. Os dispositivos flexíveis de borracha natural foram implementados como sensores óptico e eletroquímicos, utilizando fibras de carbono flexíveis como eletrodos internos. Torna-se importante ressaltar que as membranas de borracha natural são transparentes (quando consideradas a região vísivel do espectro eletromagnético), bem como biocompatíveis, possibilitando a combinação de propriedades mecânicas, ópticas e biológicas num único dispositivo. Por meio das análises eletroquímicas, demonstrou-se que possuem boa estabilidade e resistência quando submetidos a testes prolongados, mantendo a característica da curva de potencial, bem como o curto intervalo de tempo necessário para atingir a corrente estacionária durante os processos eletroquímicos. Em segunda instância, utilizaram-se os microdispositivos de borracha natural como microreatores para a síntese de nanopartículas de magnetita (Fe3O4) decoradas com nanopartículas de ouro (FeO4-AuNPs). A síntese de partículas decoradas (Fe3O4-AuNPs) mostrou-se efetiva, obtendo relativo grau... / Abstract: This thesis reports a new concept of flexible microfluidic device, using natural rubber as alternative material, flexible and stretchable, for based-plataforms of lab-on-a-chip-devices. The device preparation is carried out dropping the latex over the mold, supported on acrylic dishes, containing the configuration of the device. The latex should cover the entire structure by casting method and, subsequentely subjecting it to thermal treatment to form the natural rubber membranes. The membranes demolded should replicate the configuration of the device on its surface. Poly(vinyl chloride) (PVC) films are implement as covering layer on internal surface, avoiding thw water absorption e protein compounds leaching from natural rubber membranes. The flexible devices of natural rubber were implemented as optical and electrochemical sensors, using flexible carbon fibers as electrodes internal electrodes. Becomes important emphasize, that the natural rubber membranes are transparent when considering the visible region in the electromagnetic sprectrum as well as it is biocompatible, allowing the combination of mechanical, optical and biological properties in a single device. Rely on electrochemical analysis devices demonstrate good stability and resistance for long term stability maintaining the characteristic curve of potential as well as a short interval of time necessary to reach the stationary current for each electrochemical process. In a second instance, we used the natural rubber-based microfluidic as microreactor for the synthesis of magnetic nanoparticles (Fe3O4) decorated with gold nanoparticles (Fe3O4-AuNPs). The synthesis of decorated nanoparticles (Fe3O4-AuNPs) shows effectiveness in order to obtain high degree of homogeneity on gold nanoparticles distribution over the surface of magnetite particles, reaching averages sizes of 6.3 nm / Doutor
139

The nature of the base polymer and the properties of N.B.R. gum vulcanizates

Kiroski, Dusko January 1995 (has links)
No description available.
140

Dispositivo microfluídico de borracha natural (LAB-ON-A-CHIP)

Cabrera, Flávio Camargo [UNESP] 27 February 2015 (has links) (PDF)
Made available in DSpace on 2015-06-17T19:34:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-02-27. Added 1 bitstream(s) on 2015-06-18T12:47:26Z : No. of bitstreams: 1 000829736.pdf: 1859346 bytes, checksum: ac12f4b0269718c847e0aa061aeef3c4 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Esta tese apresenta um novo conceito de dispositivo microfluídico flexível, utilizando a borracha natural como material alternativo, de baixo custo, flexível e elástico, para a preparação de plataformas lab-on-a-chip. A preparação do dispositivo é realizada com a dispersão do látex sobre o molde. Este é construído em placas de acrílico (PMMA - Poli-metilmetacrilato) contendo a configuração do dispositivo. O látex deve recobrir toda a estrutura, utilizando o método casting. Posteriormente, o molde contendo látex é submetido a tratamento térmico para a formação das membranas de borracha natural. As membranas retiradas do molde replicam a configuração do dispositivo em sua superfície. Filmes de policloreto de vinil (PVC) são utilizados como recobrimento interno a fim de evitar a absorção de água e a liberação de composição proteica das membranas de borracha natural. Os dispositivos flexíveis de borracha natural foram implementados como sensores óptico e eletroquímicos, utilizando fibras de carbono flexíveis como eletrodos internos. Torna-se importante ressaltar que as membranas de borracha natural são transparentes (quando consideradas a região vísivel do espectro eletromagnético), bem como biocompatíveis, possibilitando a combinação de propriedades mecânicas, ópticas e biológicas num único dispositivo. Por meio das análises eletroquímicas, demonstrou-se que possuem boa estabilidade e resistência quando submetidos a testes prolongados, mantendo a característica da curva de potencial, bem como o curto intervalo de tempo necessário para atingir a corrente estacionária durante os processos eletroquímicos. Em segunda instância, utilizaram-se os microdispositivos de borracha natural como microreatores para a síntese de nanopartículas de magnetita (Fe3O4) decoradas com nanopartículas de ouro (FeO4-AuNPs). A síntese de partículas decoradas (Fe3O4-AuNPs) mostrou-se efetiva, obtendo relativo grau... / This thesis reports a new concept of flexible microfluidic device, using natural rubber as alternative material, flexible and stretchable, for based-plataforms of lab-on-a-chip-devices. The device preparation is carried out dropping the latex over the mold, supported on acrylic dishes, containing the configuration of the device. The latex should cover the entire structure by casting method and, subsequentely subjecting it to thermal treatment to form the natural rubber membranes. The membranes demolded should replicate the configuration of the device on its surface. Poly(vinyl chloride) (PVC) films are implement as covering layer on internal surface, avoiding thw water absorption e protein compounds leaching from natural rubber membranes. The flexible devices of natural rubber were implemented as optical and electrochemical sensors, using flexible carbon fibers as electrodes internal electrodes. Becomes important emphasize, that the natural rubber membranes are transparent when considering the visible region in the electromagnetic sprectrum as well as it is biocompatible, allowing the combination of mechanical, optical and biological properties in a single device. Rely on electrochemical analysis devices demonstrate good stability and resistance for long term stability maintaining the characteristic curve of potential as well as a short interval of time necessary to reach the stationary current for each electrochemical process. In a second instance, we used the natural rubber-based microfluidic as microreactor for the synthesis of magnetic nanoparticles (Fe3O4) decorated with gold nanoparticles (Fe3O4-AuNPs). The synthesis of decorated nanoparticles (Fe3O4-AuNPs) shows effectiveness in order to obtain high degree of homogeneity on gold nanoparticles distribution over the surface of magnetite particles, reaching averages sizes of 6.3 nm / FAPESP: 2011/23362-0

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