{"id":{"repo_id":"mo-state","oai_identifier":"oai:bearworks.missouristate.edu:theses-1977"},"canonical_url":"https://search.dev.ndltd.org/etd/mo-state/oai:bearworks.missouristate.edu:theses-1977","repository":{"repo_id":"mo-state","name":"Missouri State University","base_url":"https://bearworks.missouristate.edu/do/oai/"},"display":{"title":"Construction of an Initiated Chemical Vapor Deposition (iCVD) Reactor and Deposition of Polytetrafluoroethylene (Ptfe) Thin Films Using Perfluoro-1-Octanesulfonyl Fluoride as the Initiator","abstract":"Initiated Chemical Vapor Deposition (iCVD) is a surface polymerization technique that is different from other traditional chemical vapor deposition (CVD) techniques. iCVD is carried under a vacuum without the use of solvents, therefore eliminating contaminations. An initiator and a monomer are metered into a vacuum reactor chamber. Inside the reaction chamber is an array of resistively heated filaments and a cooled substrate stage. Monomer species adsorb on to the cooled substrate surface underneath the filament array. The thermal energy from the resistively heated filaments breaks the bonds in the initiator molecule, generating free radicals. These generated free radicals chemisorb to the monomer initiating an in situ free radical polymerization reaction which results in the formation of a polymer thin film. The overall objective of this research was to assemble a custom-built iCVD reactor and use it to grow polytetrafluoroethylene (PTFE) thin films. Perfluoro-1-octanesulfonyl fluoride (PFOSF) was used as the initiator while hexafluoropropylene oxide (HFPO) was used as the monomer. HPFO is well known for its good thermal decomposition. Nichrome filaments were resistively heated at temperature less than 400 ˚C and substrate surface cooled between 10 ˚C and 35 ˚C. Various characterization techniques such FTIR, XPS, SEM, and EDX were performed on as-deposited iCVD PTFE thin films. FTIR spectra of iCVD PTFE showed that the as-deposited iCVD thin films are spectroscopically identical to bulk PTFE.","abstract_html":"Initiated Chemical Vapor Deposition (iCVD) is a surface polymerization technique that is different from other traditional chemical vapor deposition (CVD) techniques. iCVD is carried under a vacuum without the use of solvents, therefore eliminating contaminations. An initiator and a monomer are metered into a vacuum reactor chamber. Inside the reaction chamber is an array of resistively heated filaments and a cooled substrate stage. Monomer species adsorb on to the cooled substrate surface underneath the filament array. The thermal energy from the resistively heated filaments breaks the bonds in the initiator molecule, generating free radicals. These generated free radicals chemisorb to the monomer initiating an in situ free radical polymerization reaction which results in the formation of a polymer thin film. The overall objective of this research was to assemble a custom-built iCVD reactor and use it to grow polytetrafluoroethylene (PTFE) thin films. Perfluoro-1-octanesulfonyl fluoride (PFOSF) was used as the initiator while hexafluoropropylene oxide (HFPO) was used as the monomer. HPFO is well known for its good thermal decomposition. Nichrome filaments were resistively heated at temperature less than 400 ˚C and substrate surface cooled between 10 ˚C and 35 ˚C. Various characterization techniques such FTIR, XPS, SEM, and EDX were performed on as-deposited iCVD PTFE thin films. FTIR spectra of iCVD PTFE showed that the as-deposited iCVD thin films are spectroscopically identical to bulk PTFE.","abstract_has_math":false,"creators":["Kosgey, Edgar Kiprop"],"institution":null,"degree_name":"Master of Science in Materials Science","degree_level":"Masters","degree_discipline":"Physics, Astronomy, and Materials Science","degree_department":null,"school":null,"contributors":["Saibal Mitra"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-12-01T08:00:00Z","date_published":"2015-12-01T08:00:00Z","updated_at":"2026-07-24T03:16:00Z","subjects":["iCVD","PTFE","free radicals","HFPO","PFOSF","Materials Science and Engineering"],"languages":[],"rights":["© Edgar Kiprop Kosgey"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://bearworks.missouristate.edu/theses/978","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Saibal Mitra"]},{"key":"dc:creator","label":"Author","values":["Kosgey, Edgar Kiprop"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics, Astronomy, and Materials Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Materials Science"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["iCVD","PTFE","free radicals","HFPO","PFOSF","Materials Science and Engineering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["© Edgar Kiprop Kosgey"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://bearworks.missouristate.edu/theses/978"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Initiated Chemical Vapor Deposition (iCVD) is a surface polymerization technique that is different from other traditional chemical vapor deposition (CVD) techniques. iCVD is carried under a vacuum without the use of solvents, therefore eliminating contaminations. An initiator and a monomer are metered into a vacuum reactor chamber. Inside the reaction chamber is an array of resistively heated filaments and a cooled substrate stage. Monomer species adsorb on to the cooled substrate surface underneath the filament array. The thermal energy from the resistively heated filaments breaks the bonds in the initiator molecule, generating free radicals. These generated free radicals chemisorb to the monomer initiating an in situ free radical polymerization reaction which results in the formation of a polymer thin film. The overall objective of this research was to assemble a custom-built iCVD reactor and use it to grow polytetrafluoroethylene (PTFE) thin films. Perfluoro-1-octanesulfonyl fluoride (PFOSF) was used as the initiator while hexafluoropropylene oxide (HFPO) was used as the monomer. HPFO is well known for its good thermal decomposition. Nichrome filaments were resistively heated at temperature less than 400 ˚C and substrate surface cooled between 10 ˚C and 35 ˚C. Various characterization techniques such FTIR, XPS, SEM, and EDX were performed on as-deposited iCVD PTFE thin films. FTIR spectra of iCVD PTFE showed that the as-deposited iCVD thin films are spectroscopically identical to bulk PTFE."]},{"key":"dc:title","label":"Title","values":["Construction of an Initiated Chemical Vapor Deposition (iCVD) Reactor and Deposition of Polytetrafluoroethylene (Ptfe) Thin Films Using Perfluoro-1-Octanesulfonyl Fluoride as the Initiator"]}]}],"canonical_facts":{"dc:contributor":["Saibal Mitra"],"dc:creator":["Kosgey, Edgar Kiprop"],"dc:description.abstract":["Initiated Chemical Vapor Deposition (iCVD) is a surface polymerization technique that is different from other traditional chemical vapor deposition (CVD) techniques. iCVD is carried under a vacuum without the use of solvents, therefore eliminating contaminations. An initiator and a monomer are metered into a vacuum reactor chamber. Inside the reaction chamber is an array of resistively heated filaments and a cooled substrate stage. Monomer species adsorb on to the cooled substrate surface underneath the filament array. The thermal energy from the resistively heated filaments breaks the bonds in the initiator molecule, generating free radicals. These generated free radicals chemisorb to the monomer initiating an in situ free radical polymerization reaction which results in the formation of a polymer thin film. The overall objective of this research was to assemble a custom-built iCVD reactor and use it to grow polytetrafluoroethylene (PTFE) thin films. Perfluoro-1-octanesulfonyl fluoride (PFOSF) was used as the initiator while hexafluoropropylene oxide (HFPO) was used as the monomer. HPFO is well known for its good thermal decomposition. Nichrome filaments were resistively heated at temperature less than 400 ˚C and substrate surface cooled between 10 ˚C and 35 ˚C. Various characterization techniques such FTIR, XPS, SEM, and EDX were performed on as-deposited iCVD PTFE thin films. FTIR spectra of iCVD PTFE showed that the as-deposited iCVD thin films are spectroscopically identical to bulk PTFE."],"dc:identifier":["https://bearworks.missouristate.edu/theses/978"],"dc:rights":["© Edgar Kiprop Kosgey"],"dc:subject":["iCVD","PTFE","free radicals","HFPO","PFOSF","Materials Science and Engineering"],"dc:title":["Construction of an Initiated Chemical Vapor Deposition (iCVD) Reactor and Deposition of Polytetrafluoroethylene (Ptfe) Thin Films Using Perfluoro-1-Octanesulfonyl Fluoride as the Initiator"],"thesis:degree_discipline":["Physics, Astronomy, and Materials Science"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science in Materials Science"]},"updated_at":"2026-07-24T03:16:00Z"}