{"id":{"repo_id":"buffalo","oai_identifier":"oai:ubir.buffalo.edu:10477/79422"},"canonical_url":"https://search.dev.ndltd.org/etd/buffalo/oai:ubir.buffalo.edu:10477/79422","repository":{"repo_id":"buffalo","name":"Buffalo","base_url":"https://ubir.buffalo.edu/oai/request"},"display":{"title":"Fluorinated Polystyrene-b-polybutadiene-b-polystyrene (SBS) for Membrane Gas Separation","abstract":"M.S.","abstract_html":"M.S.","abstract_has_math":false,"creators":["Jia, Weiguang; 0000-0002-6856-1678"],"institution":"State University of New York at Buffalo","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Lin, Haiqing","Chemical and Biological Engineering"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-04-04T20:32:45Z","date_published":"2019-04-04T20:32:45Z","updated_at":"2026-07-27T19:05:16Z","subjects":["chemical engineering"],"languages":["eng"],"rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10477/79422","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lin, Haiqing","Chemical and Biological Engineering"]},{"key":"dc:creator","label":"Author","values":["Jia, Weiguang; 0000-0002-6856-1678"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-04-04T20:32:45Z","2019","2019-01-18 11:20:15"]},{"key":"dc:publisher","label":"Institution","values":["State University of New York at Buffalo"]},{"key":"dc:type","label":"Dc Type","values":["Text","Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["chemical engineering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/10477/79422"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["M.S.","Fluorine-containing polymers are of interest as materials for gas separation membranes due to their good gas separation properties, chemical resistance, and thermal stability. In this study, polystyrene-b-polybutadiene-b-polystyrene (SBS) was modified via gem-difluorocyclopropanation of double bonds in the PB phase and investigated for CO2/N2 and CO2/CH4 separation. 1HNMR confirmed the degree of the fluorination, and physical properties of polymers were studied, including density, fractional free volume, and glass transition temperature. The Maxwell model and additive model were used to obtaining the gas permeability and solubility in the fluorinated PB (FPB) phase, respectively. Increasing the F content from 0 to 27 wt% in the FPB phase increases the CO2 solubility from 0.58 to 1.1 cm3 (STP)/cm3 atm and CO2/C2H6 solubility selectivity from 0.45 to 1.2 at 35 oC, suggesting that mutual attraction between F groups and CO2 and unfavorable interaction with C2H6. The introduction of the F groups also increases Tg and decreases FFV, increasing the size sieving ability, which can be satisfactorily described using the free volume model. This work demonstrates that the F groups could be useful for materials design to improve the CO2/gas separation properties."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Fluorinated Polystyrene-b-polybutadiene-b-polystyrene (SBS) for Membrane Gas Separation"]}]}],"canonical_facts":{"dc:contributor":["Lin, Haiqing","Chemical and Biological Engineering"],"dc:creator":["Jia, Weiguang; 0000-0002-6856-1678"],"dc:date":["2019-04-04T20:32:45Z","2019","2019-01-18 11:20:15"],"dc:description":["M.S.","Fluorine-containing polymers are of interest as materials for gas separation membranes due to their good gas separation properties, chemical resistance, and thermal stability. In this study, polystyrene-b-polybutadiene-b-polystyrene (SBS) was modified via gem-difluorocyclopropanation of double bonds in the PB phase and investigated for CO2/N2 and CO2/CH4 separation. 1HNMR confirmed the degree of the fluorination, and physical properties of polymers were studied, including density, fractional free volume, and glass transition temperature. The Maxwell model and additive model were used to obtaining the gas permeability and solubility in the fluorinated PB (FPB) phase, respectively. Increasing the F content from 0 to 27 wt% in the FPB phase increases the CO2 solubility from 0.58 to 1.1 cm3 (STP)/cm3 atm and CO2/C2H6 solubility selectivity from 0.45 to 1.2 at 35 oC, suggesting that mutual attraction between F groups and CO2 and unfavorable interaction with C2H6. The introduction of the F groups also increases Tg and decreases FFV, increasing the size sieving ability, which can be satisfactorily described using the free volume model. This work demonstrates that the F groups could be useful for materials design to improve the CO2/gas separation properties."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/10477/79422"],"dc:language":["eng"],"dc:publisher":["State University of New York at Buffalo"],"dc:rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"dc:subject":["chemical engineering"],"dc:title":["Fluorinated Polystyrene-b-polybutadiene-b-polystyrene (SBS) for Membrane Gas Separation"],"dc:type":["Text","Thesis"]},"updated_at":"2026-07-27T19:05:16Z"}