{"id":{"repo_id":"texas-state","oai_identifier":"oai:digital.library.txst.edu:10877/12584"},"canonical_url":"https://search.dev.ndltd.org/etd/texas-state/oai:digital.library.txst.edu:10877/12584","repository":{"repo_id":"texas-state","name":"Texas State University","base_url":"https://digital.library.txst.edu/server/oai/request"},"display":{"title":"Partially-Fluorinated Polyimides using Aliphatic Diamines","abstract":"Two series of polyimides were created in order to address several of the existing problems with gas permeation membranes used today. These issues include the lack of flexibility and inverse ratio that exists between selectivity and permeation. The approach taken in order to solving the flexibility issue involved the incorporation of flexible spacers. The ratio of selectivity to permeation issue was addressed by the incorporation of titanium dioxide nanoparticles. Two series of partially-fhiorinated polyimides made using aliphatic diamines as the flexible component and titaniumdioxide nanoparticles were synthesized. All of the reactions were performed via condensation polymerization. Thermal data suggest that the obtained films have thermal stability between 395 - 490 °C. Mechanical data suggest that the resulting films have a dramatic increase in flexibility, when compared to existing materials, displaying storage modulus values of 1640 - 2740 MPa. In addition, both series show above normal molecular weights with values of 11 - 260 KDa for most of the films. This lends support to the justification for the above average mechanical performances reported.","abstract_html":"Two series of polyimides were created in order to address several of the existing problems with gas permeation membranes used today. These issues include the lack of flexibility and inverse ratio that exists between selectivity and permeation. The approach taken in order to solving the flexibility issue involved the incorporation of flexible spacers. The ratio of selectivity to permeation issue was addressed by the incorporation of titanium dioxide nanoparticles. Two series of partially-fhiorinated polyimides made using aliphatic diamines as the flexible component and titaniumdioxide nanoparticles were synthesized. All of the reactions were performed via condensation polymerization. Thermal data suggest that the obtained films have thermal stability between 395 - 490 °C. Mechanical data suggest that the resulting films have a dramatic increase in flexibility, when compared to existing materials, displaying storage modulus values of 1640 - 2740 MPa. In addition, both series show above normal molecular weights with values of 11 - 260 KDa for most of the films. This lends support to the justification for the above average mechanical performances reported.","abstract_has_math":false,"creators":["Sokolova, Alisa Yuriyivna"],"institution":"Texas State University-San Marcos","degree_name":"Master of Science","degree_level":"Masters","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":[],"advisors":["Booth, Chad Jeffrey"],"committee_chairs":[],"committee_members":["Cassidy, Patrick E.","Sun, Luyi"],"year":2010,"date_issued":"2010-05","date_published":"2010-05","updated_at":"2026-07-27T21:22:35Z","subjects":["polyimides","titanium dioxide","polycondensation"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10877/12584","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Booth, Chad Jeffrey"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Cassidy, Patrick E.","Sun, Luyi"]},{"key":"dc:creator","label":"Author","values":["Sokolova, Alisa Yuriyivna"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2020-09-11T14:22:25Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2020-09-11T14:22:25Z"]},{"key":"dc:date.issued","label":"Date","values":["2010-05"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Texas State University-San Marcos"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["polyimides","titanium dioxide","polycondensation"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10877/12584"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Two series of polyimides were created in order to address several of the existing problems with gas permeation membranes used today. These issues include the lack of flexibility and inverse ratio that exists between selectivity and permeation. The approach taken in order to solving the flexibility issue involved the incorporation of flexible spacers. The ratio of selectivity to permeation issue was addressed by the incorporation of titanium dioxide nanoparticles. Two series of partially-fhiorinated polyimides made using aliphatic diamines as the flexible component and titaniumdioxide nanoparticles were synthesized. All of the reactions were performed via condensation polymerization. Thermal data suggest that the obtained films have thermal stability between 395 - 490 °C. Mechanical data suggest that the resulting films have a dramatic increase in flexibility, when compared to existing materials, displaying storage modulus values of 1640 - 2740 MPa. In addition, both series show above normal molecular weights with values of 11 - 260 KDa for most of the films. This lends support to the justification for the above average mechanical performances reported."]},{"key":"dc:format","label":"Dc Format","values":["Text"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["1 file (.pdf)"]},{"key":"dc:title","label":"Title","values":["Partially-Fluorinated Polyimides using Aliphatic Diamines"]}]}],"canonical_facts":{"dc:contributor.advisor":["Booth, Chad Jeffrey"],"dc:contributor.committeemember":["Cassidy, Patrick E.","Sun, Luyi"],"dc:creator":["Sokolova, Alisa Yuriyivna"],"dc:date.accessioned":["2020-09-11T14:22:25Z"],"dc:date.available":["2020-09-11T14:22:25Z"],"dc:date.issued":["2010-05"],"dc:description.abstract":["Two series of polyimides were created in order to address several of the existing problems with gas permeation membranes used today. These issues include the lack of flexibility and inverse ratio that exists between selectivity and permeation. The approach taken in order to solving the flexibility issue involved the incorporation of flexible spacers. The ratio of selectivity to permeation issue was addressed by the incorporation of titanium dioxide nanoparticles. Two series of partially-fhiorinated polyimides made using aliphatic diamines as the flexible component and titaniumdioxide nanoparticles were synthesized. All of the reactions were performed via condensation polymerization. Thermal data suggest that the obtained films have thermal stability between 395 - 490 °C. Mechanical data suggest that the resulting films have a dramatic increase in flexibility, when compared to existing materials, displaying storage modulus values of 1640 - 2740 MPa. In addition, both series show above normal molecular weights with values of 11 - 260 KDa for most of the films. This lends support to the justification for the above average mechanical performances reported."],"dc:format":["Text"],"dc:format.medium":["1 file (.pdf)"],"dc:identifier.uri":["https://hdl.handle.net/10877/12584"],"dc:language.iso":["en"],"dc:subject":["polyimides","titanium dioxide","polycondensation"],"dc:title":["Partially-Fluorinated Polyimides using Aliphatic Diamines"],"dc:type":["Thesis"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Texas State University-San Marcos"]},"updated_at":"2026-07-27T21:22:35Z"}