{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/16824"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/16824","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Solvent-based self-healing polymeric materials","abstract":"Mechanical damage to bulk polymers typically begins as a microcrack, which can lead to eventual failure of the material if there is no method to inhibit crack growth. In living systems, this damage automatically initiates a healing response. Following the example of nature, self-healing polymers are engineered with the unique ability to extend the lifetime of materials by preventing damage propagation using various chemical mechanisms that are triggered by crack formation. The initial chemistry for self-healing materials employed a room temperature ring-opening metathesis polymerization (ROMP) using encapsulated dicyclopentadiene (DCPD) and wax-protected Grubbs’ catalyst. However the limitations of this system, including catalyst availability, cost, environmental toxicity, stability, and materials processing, motivated the search for a simpler approach to self-healing. Many chemical reactions require the use of a solvent. When an organic solvent is introduced into polymer systems, the mobility of polymer chains increases as the localized glass transition temperature is depressed. Solvent-based self-healing involves wetting of the polymer surface and resultant swelling of the bulk material, leading to interlocking of the polymer chains across a damaged crack plane to recover virgin mechanical properties. To achieve this healing in an autonomic fashion, liquid-filled microcapsules were prepared with various core components and embedded within a bulk polymer during processing. By compartmentalizing reactive fluids containing a solvent into a bulk material, in situ reactions occur upon damage in the form of a crack. A crack propagating through the polymeric material ruptures the embedded microcapsules, thus releasing solvent-based mixtures into the crack plane. The encapsulation of various solvents has been developed for use in self-healing polymers. Solvent-filled microcapsules were incorporated into thermoset matrices and thermoplastic materials such as poly(methyl methacrylate), and the healing performance is discussed in great detail. A self-healing bone cement/dental resin system based on free-radical polymerization reactions has also been studied. The development of solvent-based microcapsules led to the encapsulation of conductive materials for the repair of mechanically damaged electronic devices. Finally, additional research was carried out to examine the use of solid and protected amines for high temperature self-healing systems.","abstract_html":"Mechanical damage to bulk polymers typically begins as a microcrack, which can lead to eventual failure of the material if there is no method to inhibit crack growth. In living systems, this damage automatically initiates a healing response. Following the example of nature, self-healing polymers are engineered with the unique ability to extend the lifetime of materials by preventing damage propagation using various chemical mechanisms that are triggered by crack formation. The initial chemistry for self-healing materials employed a room temperature ring-opening metathesis polymerization (ROMP) using encapsulated dicyclopentadiene (DCPD) and wax-protected Grubbs’ catalyst. However the limitations of this system, including catalyst availability, cost, environmental toxicity, stability, and materials processing, motivated the search for a simpler approach to self-healing. Many chemical reactions require the use of a solvent. When an organic solvent is introduced into polymer systems, the mobility of polymer chains increases as the localized glass transition temperature is depressed. Solvent-based self-healing involves wetting of the polymer surface and resultant swelling of the bulk material, leading to interlocking of the polymer chains across a damaged crack plane to recover virgin mechanical properties. To achieve this healing in an autonomic fashion, liquid-filled microcapsules were prepared with various core components and embedded within a bulk polymer during processing. By compartmentalizing reactive fluids containing a solvent into a bulk material, in situ reactions occur upon damage in the form of a crack. A crack propagating through the polymeric material ruptures the embedded microcapsules, thus releasing solvent-based mixtures into the crack plane. The encapsulation of various solvents has been developed for use in self-healing polymers. Solvent-filled microcapsules were incorporated into thermoset matrices and thermoplastic materials such as poly(methyl methacrylate), and the healing performance is discussed in great detail. A self-healing bone cement/dental resin system based on free-radical polymerization reactions has also been studied. The development of solvent-based microcapsules led to the encapsulation of conductive materials for the repair of mechanically damaged electronic devices. Finally, additional research was carried out to examine the use of solid and protected amines for high temperature self-healing systems.","abstract_has_math":false,"creators":["Caruso, Mary M."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Moore, Jeffrey S.","Silverman, Scott K.","Zimmerman, Steven C.","White, Scott R."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010-08-20T17:58:56Z","date_published":"2010-08-20T17:58:56Z","updated_at":"2026-07-22T22:25:09Z","subjects":["self-healing","polymers","solvent healing","microcapsules","fracture toughness","bone cement"],"languages":["en"],"rights":["Copyright 2010 Mary M. Caruso"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/16824","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Moore, Jeffrey S.","Silverman, Scott K.","Zimmerman, Steven C.","White, Scott R."]},{"key":"dc:creator","label":"Author","values":["Caruso, Mary M."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2010-08-20T17:58:56Z","2010-08"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["self-healing","polymers","solvent healing","microcapsules","fracture toughness","bone cement"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2010 Mary M. Caruso"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/16824"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Mechanical damage to bulk polymers typically begins as a microcrack, which can lead to eventual failure of the material if there is no method to inhibit crack growth. In living systems, this damage automatically initiates a healing response. Following the example of nature, self-healing polymers are engineered with the unique ability to extend the lifetime of materials by preventing damage propagation using various chemical mechanisms that are triggered by crack formation. The initial chemistry for self-healing materials employed a room temperature ring-opening metathesis polymerization (ROMP) using encapsulated dicyclopentadiene (DCPD) and wax-protected Grubbs’ catalyst. However the limitations of this system, including catalyst availability, cost, environmental toxicity, stability, and materials processing, motivated the search for a simpler approach to self-healing. Many chemical reactions require the use of a solvent. When an organic solvent is introduced into polymer systems, the mobility of polymer chains increases as the localized glass transition temperature is depressed. Solvent-based self-healing involves wetting of the polymer surface and resultant swelling of the bulk material, leading to interlocking of the polymer chains across a damaged crack plane to recover virgin mechanical properties. To achieve this healing in an autonomic fashion, liquid-filled microcapsules were prepared with various core components and embedded within a bulk polymer during processing. By compartmentalizing reactive fluids containing a solvent into a bulk material, in situ reactions occur upon damage in the form of a crack. A crack propagating through the polymeric material ruptures the embedded microcapsules, thus releasing solvent-based mixtures into the crack plane. The encapsulation of various solvents has been developed for use in self-healing polymers. Solvent-filled microcapsules were incorporated into thermoset matrices and thermoplastic materials such as poly(methyl methacrylate), and the healing performance is discussed in great detail. A self-healing bone cement/dental resin system based on free-radical polymerization reactions has also been studied. The development of solvent-based microcapsules led to the encapsulation of conductive materials for the repair of mechanically damaged electronic devices. Finally, additional research was carried out to examine the use of solid and protected amines for high temperature self-healing systems.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-07-01T20:23:22Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Caruso_Mary.pdf: 13005627 bytes, checksum: 3e0400dce8dabc605b682e32359b4232 (MD5)","Made available in DSpace on 2010-08-20T17:58:56Z (GMT). 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The initial chemistry for self-healing materials employed a room temperature ring-opening metathesis polymerization (ROMP) using encapsulated dicyclopentadiene (DCPD) and wax-protected Grubbs’ catalyst. However the limitations of this system, including catalyst availability, cost, environmental toxicity, stability, and materials processing, motivated the search for a simpler approach to self-healing. Many chemical reactions require the use of a solvent. When an organic solvent is introduced into polymer systems, the mobility of polymer chains increases as the localized glass transition temperature is depressed. Solvent-based self-healing involves wetting of the polymer surface and resultant swelling of the bulk material, leading to interlocking of the polymer chains across a damaged crack plane to recover virgin mechanical properties. To achieve this healing in an autonomic fashion, liquid-filled microcapsules were prepared with various core components and embedded within a bulk polymer during processing. By compartmentalizing reactive fluids containing a solvent into a bulk material, in situ reactions occur upon damage in the form of a crack. A crack propagating through the polymeric material ruptures the embedded microcapsules, thus releasing solvent-based mixtures into the crack plane. The encapsulation of various solvents has been developed for use in self-healing polymers. Solvent-filled microcapsules were incorporated into thermoset matrices and thermoplastic materials such as poly(methyl methacrylate), and the healing performance is discussed in great detail. A self-healing bone cement/dental resin system based on free-radical polymerization reactions has also been studied. The development of solvent-based microcapsules led to the encapsulation of conductive materials for the repair of mechanically damaged electronic devices. Finally, additional research was carried out to examine the use of solid and protected amines for high temperature self-healing systems.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-07-01T20:23:22Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Caruso_Mary.pdf: 13005627 bytes, checksum: 3e0400dce8dabc605b682e32359b4232 (MD5)","Made available in DSpace on 2010-08-20T17:58:56Z (GMT). No. of bitstreams: 2 Caruso_Mary.pdf: 13005627 bytes, checksum: 3e0400dce8dabc605b682e32359b4232 (MD5) license.txt: 4061 bytes, checksum: a32a94814a5c2c1f2d8e2df73550d3bb (MD5)"],"dc:identifier":["http://hdl.handle.net/2142/16824"],"dc:language":["en"],"dc:rights":["Copyright 2010 Mary M. Caruso"],"dc:subject":["self-healing","polymers","solvent healing","microcapsules","fracture toughness","bone cement"],"dc:title":["Solvent-based self-healing polymeric materials"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:09Z"}