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 71 for “"photopolymerization"”.
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Nanoparticle transport via holographic photopolymerization
… of silica nanoparticles into holographic photopolymerization systems for the purpose of controlling the location of the nanoparticle within the periodic structure based upon control of the surface chemistry of the nanoparticle. Herein we report the successful sequestration of methacrylate …
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Synthesis and Photopolymerization of Novel Dimethacrylates
… intensity, and initiator concentration on the photopolymerization kinetics of ethoxylated and propoxylated dimethacrylates was investigated by isothermal DSC. The DSC curves showed a rapid increase in rate due to the Trommsdorff effect, and then a decline due to the decrease of monomer …
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Transdermal photopolymerization of hydrogels for tissue engineering
Thesis (Ph.D.)--Harvard--Massachusetts Institute of Technology Division of Health Sciences and Technology, 1999.
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Method for Photopolymerization 3D Printing of Recyclable Thermoplastic Polymers
… at scale. This thesis studies a method for photopolymerization 3D printing of the common polymers polyacrylonitrile (PAN) and polymethyl methacrylate (PMMA) to address the growing demand for low-waste production of high-resolution polymer parts with complex geometries in industrial-scale …
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Photopolymerization-based signal amplification : mechanistic characterization and practical implementation
… atom-transfer radical polymerization (ATRP), photopolymerization, reversible addition-fragmentation chain transfer polymerization (RAFT), and enzyme-mediated redox polymerization. This thesis focuses on the development of photopolymerization-based signal amplification (PBA) as a platform …
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Boosting Biodetection Signals via Photopolymerization: Strategies for Photocatalyst Amplification
Photopolymerization-based signal amplification (PBA) is a method to enhance biodetection signals by coupling molecular recognition events with photocatalyst labels (eosin Y) and amplifying through visible light-initiated free radical polymerization. Leveraging inherent amplification in the radical …
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Advancing Vat Photopolymerization of Photosensitive Polyimides: Process-Structure-Property Relationships
Vat photopolymerization (VPP) is a robust additive manufacturing (AM) technology which can produce products with high resolution features, smooth service finish, and at relatively high throughput. These advantages are leveraged in applications like jewelry manufacturing as well as dental and …
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Enabling Soft Mechanosensing via Vat Photopolymerization 3D Printing: Materials, Design and Integration
L'abstract è presente nell'allegato / the abstract is in the attachment
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Development and fabrication of self-healing hydrogels via vat photopolymerization 3D printing technology
L'abstract è presente nell'allegato / the abstract is in the attachment
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Step-growth thiol-ene photopolymerization to form degradable, cytocompatible and multi-structural hydrogels
Hydrogels prepared from photopolymerization have been used for a variety of tissue engineering and controlled release applications. Polymeric biomaterials with high cytocompatibility, versatile degradation behaviors, and diverse material properties are particularly useful in studying cell fate …
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Exploiting thiol and disulfide reactive groups in photopolymerization and preparation of stimuli-responsive coatings
L'abstract è presente nell'allegato / the abstract is in the attachment
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Designing Scaffolds for Directed Cell Response in Tissue Engineering Scaffolds Fabricated by Vat Photopolymerization
Vat photopolymerization (VP) is an additive manufacturing (AM) technology that permits the fabrication of parts with complex geometries and feature sizes as small as a few microns. These attributes make VP an attractive option for the fabrication of scaffolds for tissue engineering. However, there …
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Methylated DNA detection using a high-affinity methyl-CpG binding protein and photopolymerization-based amplification
… colorimetric (visible hydrogel) signal formed by photopolymerization with short (<2 min) reaction times.
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Investigating the Process-Structure-Property Relationships in Vat Photopolymerization to Enable Fabrication of Performance Polymers
Vat photopolymerization's (VP) use in large-scale industrial manufacturing is limited due to poor scalability, and limited catalogue of engineering polymers. The challenges in scalability stem from an inherent process paradox: the feature resolution, part size, and manufacturing throughput cannot …
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Vat Photopolymerization of High-Performance Materials through Investigation of Crosslinked Network Design and Light Scattering Modeling
… resins limits the accessible properties for vat photopolymerization (VP) materials required for engineering applications. This has limited the adoption of VP for producing end-use parts, which typically require high MW polymers and/or more stable chemical functionality. Decoupling the viscosity …
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Spatially-Directed Interfacial Polymerization
… Polymerization (ISIP) and Interfacial Photopolymerization (IPP), two room-temperature, interfacial polymerization (IP)-based methods for rapid manufacturing of polymers and their composites. First, In Situ Interfacial Polymerization (ISIP) is introduced as a fabrication technique for …
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Studying the effects of polymerization temperature, composition, and initiation rate on network structure formation by free radical photopolymerization of a low Tg̳ monoacrylate/diacrylate system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Structure and Morphology of Photoreactive Monomer–Nanoparticle Mixtures Under Patterned Irradiation
… propagation in photoreactive media due to photopolymerization–induced rise in refractive index of the medium. Notably, LISW in polymeric materials has found use predominantly for the fabrication of optical waveguides but has not been explored in polymer–inorganic mixtures. Using …
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Synthesis of Nanostructured Organic and Inorganic Materials by Self-Assembly
… is considered for the organic synthesis by photopolymerization of a semi-polar monomer, carboxylated oligobutadiene, at the interfacial region of surfactant assemblies in non-lamellar mesophases. Investigation of mesophase structure in the presence of the oligomer n&d1;=6 indicates a …
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Tailoring Fluorene-based Oligomers for micron and sub-micron sized Photopatterning
… adjusted in view of the optimization of their photopolymerization behaviour. The first oligomer series deals with the effect of the molecular weight on the properties and photopatterning behaviour of pure fluorene oligomers. The molecular weights were controlled by the amount of functionalized …
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