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 6 of 6 for “"acid degradable"”.
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Development and applications of acid degradable polymeric materials
… oxocarbenium ion formation with an organic acid induces intramolecular cyclization to depolymerize a polyurethane (PU) backbone at room temperature in anhydrous or low moisture environments. With minimal chemical modification, the resulting degradation products can be repurposed into strong …
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Development of novel polymeric architectures for applications in drug delivery and studies towards the synthesis of perfect polymers by iterative exponential growth "Plus" (IEG+)
… drug delivery. Specifically, a series of novel acid-cleavable bisnorbornene crosslinkers were synthesized and evaluated as building blocks for the formation of acid-degradable brush-arm star polymers (BASPs) via the brush-first ring-opening metathesis polymerization (ROMP) method. A …
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Imparting Functionality to Macromolecules for Selective Stimulus Response
… copolymers. In particular, neutralization of acid-containing polymers readily imparted ionic functionality and yielded microphase-separated block copolymer domains, enhancing polymer thermomechanical properties and ion transport. An ABA triblock copolymer composed of mechanically reinforcing …
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PH-responsive polymeric materials for encapsulation and triggered release
… the first part of the dissertation, a diester diacid chloride monomer, PDDC, was utilized in the preparation of a novel pH-responsive polyamide microcapsule. PDDC was selected for its susceptibility to hydrolysis as well as simplicity in structure and synthesis. A mixture of polyamine monomers, …
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Design and development of stimuli-responsive materials: pH sensitive polymersomes and poly(olefin sulfone)s
… split into two main parts: 1) the development of acid-triggerable covalently-crosslinked polymersomes and 2) the design and synthesis of base-, heat-, and fluoride-sensitive poly(olefin sulfone)s. Polymersomes are a useful approach for encapsulation but are susceptible to environmental stressors …
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Stimuli-responsive microcapsules for self-protecting and self-healing material systems
… walls are formed with hydrophobic cores. The acid-triggered release of Eudragit and cPPA microcapsules containing an oil core is demonstrated. Tunable, monodisperse double emulsion templates with an aqueous core are formed with sizes ranging from 295 µm to 1200 µm. The double emulsion …