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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 79 for “"poly(methyl methacrylate) (PMMA)"”.

  1. Design of a CMOS compatible, athermal, optical waveguide

    Fernandez, Luis Enrique, S.B. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2007

    … explored to serve as the low index material, poly(ether imide) (PI) and poly(methyl methacrylate) (PMMA). The slot waveguide with PI as the low index material had a simulated, device thermo-optic coefficient of -8.5 x 10-4K-1, and the slot waveguide with PMMA as the low index material had a …

    mit Repository record

  2. Presentation and accessibility of surface bound ligands on amphiphilic graft copolymer films

    Kuhlman, William AMassachusetts Institute of Technology2007

    Amphiphilic comb-type graft copolymers comprising a poly(methyl methacrylate) (PMMA) backbone and short, polyethylene oxide (PEO) side chains, PMMA-g-PEO, are proposed to self-organize at the polymer/water interface, resulting in quasi-2D confinement of the backbone at the immediate surface. The …

    mit Repository record

  3. STUDYING THE INTERACTION OF NANO- & MICROPLASTICS WITH ENTEROVIRUS AND THEIR CYTOTOXICITY ON HUMAN LUNG CELL LINE

    KRITIKA PANDEY2025

    … the chronic effects of positively charged mixed polymer nanoplastic particles on a human lung cell line. Positively charged poly(methyl methacrylate) (PMMA) surfaces exhibited enhanced binding to EV-D68 compared with neutral and negatively charged surfaces, resulting in significant viral …

    nus Repository record

  4. Design of a micro-Functional Testing System for process characterization of a hot micro-embossing machine

    Thaker, Kunal H. (Kunal Harish)Massachusetts Institute of Technology2006

    … materials, and increasingly manufacturing. Polymers (Poly(methyl methacrylate)-PMMA in particular) are the current material of choice given their low cost, wide range of material properties, and biocompatibility. Given most fabrication processes have focused on hard materials for the …

    mit Repository record

  5. Stereocomplex poly (methyl methacrylate) fibers and self-reinforced composites and structural color of butterflies and beetles - characterization, replication and mimicry

    Crne, MatijaGeorgia Institute of Technology2009

    Stereocomplex poly(methyl methacrylate) (PMMA) fibers for the purpose of reinforcing PMMA materials were developed. These kinds of composites are known as "self-reinforced" composites. We were successful in producing stereocomplex PMMA fibers with three different methods - wet spinning, gel …

    gatech Repository record

  6. Creation of crosslinkable interphases in polymer blends by means of novel coupling agents

    Sadhu, Veera BhadraiahTechnische Universität Dresden

    … for the modification of interface in immiscible polymer blends, which determine to a large degree of the blend properties. For this purpose novel coupling agents (named SCA) containing 2-oxazoline, 2-oxazinone, and hydrosilane reactive sites have been prepared. In blends of amino- functional and …

    qucosa-diss

  7. High constriction ratio continuous insulator based dielectrophoretic particle sorting

    Wang, Qianru, Ph. D. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2014

    … A 3D constriction is fabricated inside Poly (methyl methacrylate) (PMMA) channels using a micromilling technique. By controlling the channel geometry at the 3D constriction area, a nonuniform electric field with a large intensity gradient perpendicular to the local particle flow …

    mit Repository record

  8. Synthesis of polymeric nanocomposites in supercritical carbon dioxide

    Yang, Hongta

    … last decade. In this thesis, the properties of poly (methyl methacrylate) (PMMA)/silica nanocomposites with different surfactant and filler concentrations synthesized through in-situ polymerization in supercritical carbon dioxide were investigated. In addition, ferromagnetic nano-particles were …

    njit Repository record

  9. Membrane-Based Protein Preconcentration Microfluidic Devices

    Li, Yi2006

    … of low-concentration biological samples. A photopolymerized ion-permeable membrane interfaced with a microchannel in poly(methyl methacrylate) (PMMA) formed the preconcentrator. When a voltage was applied between the sample reservoir and the ionically conductive membrane in a capillary-based …

    byu Repository record

  10. Surface Modification of Commonly used Polymer Plastics for Increased Hemocompatibility in Medical Equipment

    Fedorov, Kirill2017

    … used in making perfusion equipment components: polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl chloride (PVC), polypropylene (PP), poly (methyl methacrylate) (PMMA), polyurethane (PU), polysulfone (PS). All materials had MEG-OH adlayer formed and characterized with x-ray …

    toronto-retro Repository record

  11. Micromechanics, macromechanics and constitutive modeling of the elasto-viscoplastic deformation of rubber-toughened glassy polymers

    Danielsson, Mats, 1973-Massachusetts Institute of Technology2003

    Glassy polymers, such as polystyrene (PS), poly(methyl methacrylate) (PMMA) and polycarbonate (PC), are common engineering polymers that have found uses in consumer products ranging from portable computers and optical lenses, to automotive components and appliance housings. PMMA and PS are …

    mit Repository record

  12. An internal variable theory for isotropic visco-elastic-plastic solids : application to indentation of amorphous polymeric solids

    Ames, Nicoli M. (Nicoli Margret), 1978-Massachusetts Institute of Technology2003

    … in modeling the plastic deformation of amorphous polymers has been made by Parks, Argon, Boyce, Arruda, and their co-workers (e.g. Parks, Argon, & Bagepalli, 1985; Boyce, Parks, & Argon, 1998; Arruda & Boyce, 1993), and by Wu and Van der Giessen (1993). Although these models phenomenologically …

    mit Repository record

  13. The blending of hydroxypropyl lignin with poly(methylmethacrylate) and poly(vinyl alcohol)

    Ciemniecki, Scott LawrenceVirginia Polytechnic Institute and State University1986

    Polymer blends consisting of hydroxypropyl lignin (HPL ) and commercially available poly(methyl methacrylate) (PMMA ) and poly(vinyl alcohol) (PVA) were evaluated in terms of their morphology, viscoelastic properties and mechanical properties. In the case of HPL/PMMA blends experimental variables …

    vt Repository record

  14. Ultrafast dynamic ellipsometry of laser driven shock waves

    Bolme, Cynthia AnneMassachusetts Institute of Technology2008

    … and the shocked refractive indices of thin polymer films of polycarbonate, poly(methyl methacrylate) (PMMA), poly(chlorotrifluoroethylene-co-vinylidene fluoride) (Kel-F 800), and polydimethylsiloxane (Sylgard 184). Next, UDE was used to measure the Hugoniots of liquid samples over a range of …

    mit Repository record

  15. Air-gap sacrificial materials by initiated chemical vapor deposition

    Lee, Long HuaMassachusetts Institute of Technology2007

    P(neopentyl methacrylate-co-ethylene glycol dimethacrylate) copolymer, abbreviated as P(npMAco-EGDA), was selected as the potential air-gap sacrificial material among possible combination of twenty monomers and four crosslinkers. P(npMA-co-EGDA) was deposited onto substrates using initiated …

    mit Repository record

  16. Luminescent organic materials and their application in solar technologies

    Gutierrez, Gregory D. (Gregory Daniel)Massachusetts Institute of Technology2016

    … (LSC) that employs two 7r-conjugated polymers as surrogate absorbers for a minority amount of the perylene bisimide Lumogen F Red 305. We developed a small LSC wherein a mixture of the two polymers act as both the host layer and antennae for a 1.5 wt% loading of Lumogen F Red 305. A …

    mit Repository record

  17. The applications of comb polymer to the study of liver cell adhesion and signaling

    Yin, David, 1973-Massachusetts Institute of Technology2004

    Comb polymer, which consists of a hydrophobic poly(methyl methacrylate) (PMMA) backbone with hydrophilic hydroxy-poly(ethylene oxide) (HPOEM) side chains, is a tool that has many possible applications for the study of liver cell adhesion and signaling. This polymer has the unique properties of …

    mit Repository record

  18. Impact Mechanics of PMMA/PC Multi-Laminates with Soft Polymer Interlayers

    Stenzler, Joshua SaulVirginia Tech2009

    … and energy dissipation mechanisms of all-polymer multi-laminates. An instrumented, intermediate impact velocity experimental setup with strain rates on the order of 100 s-1, is used to assess the impact mechanics of three-layered samples consisting of a poly(methyl methacrylate) (PMMA) …

    vt Repository record

  19. Advanced Dispersion Strategies of Carbon Nanofillers and their use to enhance Mechanical and Electrical Properties of Polyacrylonitrile Fibers

    Arias Monje, Pedro JoseGeorgia Institute of Technology2020

    This study focuses on making next generation of polyacrylonitrile fibers containing carbon nanofillers, namely carbon nanotubes (CNTs) and carbon black (CB). Mechanically strong and electrically conducting poly(acrylonitrile) (PAN) fibers were obtained by incorporating up to (a) 15 wt% single wall …

    gatech Repository record

  20. Physical Aging of Miscible Polymer Blends

    Robertson, Christopher G.Virginia Tech1999

    … aging measurements were performed on various polymeric glasses with the overriding goal of developing a better molecular picture of the nonequilibrium glassy state. To this end, aging-induced changes in mechanical properties and in the thermodynamic state (volume and enthalpy) were assessed …

    vt Repository record

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