{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/110790"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/110790","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Development of synthetic methodologies for polyolefin containing block copolymers","abstract":"The student, Tianwei Yan, submitted this Dissertation for approval on 2021-03-29 at 19:56.","abstract_html":"The student, Tianwei Yan, submitted this Dissertation for approval on 2021-03-29 at 19:56.","abstract_has_math":false,"creators":["Yan, Tianwei"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemical Engineering","degree_department":null,"school":null,"contributors":["Guironnet, Damien S.","Kenis, Paul J.A.","Sing, Charles E.","Fout, Alison R."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-09-17T04:04:06Z","date_published":"2021-09-17T04:04:06Z","updated_at":"2026-07-22T22:24:52Z","subjects":["polyolefin","post-polymerization modification","block copolymer","selective copolymerization"],"languages":["en"],"rights":["Copyright 2021 Tianwei Yan"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/110790","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Guironnet, Damien S.","Kenis, Paul J.A.","Sing, Charles E.","Fout, Alison R."]},{"key":"dc:creator","label":"Author","values":["Yan, Tianwei"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2021-09-17T04:04:06Z","2023-09-17T04:07:01Z","2021-04-07","2021-05"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical Engineering"]},{"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":["polyolefin","post-polymerization modification","block copolymer","selective copolymerization"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Tianwei Yan"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/110790"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The student, Tianwei Yan, submitted this Dissertation for approval on 2021-03-29 at 19:56.","This Dissertation was approved for publication on 2021-04-07 at 08:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #16222 on 2021-09-16 at 20:07:58","Made available in DSpace on 2021-09-17T04:04:06Z (GMT). No. of bitstreams: 3 YAN-DISSERTATION-2021.pdf: 6910957 bytes, checksum: cb7f5c2d129542ff0d7993916f72112b (MD5) LICENSE.txt: 4208 bytes, checksum: 6716446ebc87eae055bb9c93ae382e66 (MD5) PROQUEST_LICENSE.txt: 4554 bytes, checksum: d6aded05895b39282be0a03ba8ef5e83 (MD5) Previous issue date: 2021-04-07","Embargo set by: Seth Robbins for item 118635 Lift date: 2023-09-17T04:04:53Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Polyolefins and block copolymers are two important groups of polymeric materials. On one end, polyolefins are the most commonly produced polymers, as a representative of polymers that have transformed our everyday life. On the other end, block copolymers are specialty materials that are produced at much smaller scales. With unique and well-defined chemical structures, block copolymers result in unmatched properties. However, the synthetic challenge hinders the combination of the two fields. Here my work has proposed a complete set of approaches to end-functionalize polyolefins with post-polymerization modification and selective copolymerization strategies. The strategies enable simple, selective and productive approaches to access well-defined amphiphilic diblock and triblock copolymers containing both polyolefin blocks and polar blocks. Chapter 1 will state the problem and review the previous literature about the synthesis of telechelic polyolefins. This chapter provides an overview of the state-of-the-art strategies in order to obtain telechelic polyolefin, as the key precursor to access polyolefin-containing multiblock copolymers. Chapter 2 will cover the development of a one-pot methodology to access polyolefin-containing diblock copolymers. This general methodology is based on a catalytic tandem hydroformylation/hydrogenation reaction applicable to any polyolefin. Chapter 3 will cover the synthesis of polyethylene-containing triblock copolymers. As an extension of the end-functionalization methodology from chapter 2, the proposed post-polymerization functionalization succeeded in introducing one functionality both randomly in the middle of the polymer backbone and at one chain end, eventually leading to the branched polyethylene-containing triblock copolymer, or 3-miktoarm star. Chapter 4 will cover the design of isotactic polypropylene-containing triblock copolymers. Selective copolymerization strategy was adopted during the synthesis of telechelic polypropylene as the precursor, in order to maintain the stereoregularity of the backbone while also get precise control of the chain-end structure. The desired polypropylene-containing triblock copolymers were then accessed by post-polymerization modification.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-05-01","The student, Tianwei Yan, accepted the attached license on 2021-03-29 at 19:32.","Embargo set by: Seth Robbins for item 118635 Lift date: 2023-09-17T04:07:01Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Development of synthetic methodologies for polyolefin containing block copolymers"]}]}],"canonical_facts":{"dc:contributor":["Guironnet, Damien S.","Kenis, Paul J.A.","Sing, Charles E.","Fout, Alison R."],"dc:creator":["Yan, Tianwei"],"dc:date":["2021-09-17T04:04:06Z","2023-09-17T04:07:01Z","2021-04-07","2021-05"],"dc:description":["The student, Tianwei Yan, submitted this Dissertation for approval on 2021-03-29 at 19:56.","This Dissertation was approved for publication on 2021-04-07 at 08:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #16222 on 2021-09-16 at 20:07:58","Made available in DSpace on 2021-09-17T04:04:06Z (GMT). No. of bitstreams: 3 YAN-DISSERTATION-2021.pdf: 6910957 bytes, checksum: cb7f5c2d129542ff0d7993916f72112b (MD5) LICENSE.txt: 4208 bytes, checksum: 6716446ebc87eae055bb9c93ae382e66 (MD5) PROQUEST_LICENSE.txt: 4554 bytes, checksum: d6aded05895b39282be0a03ba8ef5e83 (MD5) Previous issue date: 2021-04-07","Embargo set by: Seth Robbins for item 118635 Lift date: 2023-09-17T04:04:53Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Polyolefins and block copolymers are two important groups of polymeric materials. On one end, polyolefins are the most commonly produced polymers, as a representative of polymers that have transformed our everyday life. On the other end, block copolymers are specialty materials that are produced at much smaller scales. With unique and well-defined chemical structures, block copolymers result in unmatched properties. However, the synthetic challenge hinders the combination of the two fields. Here my work has proposed a complete set of approaches to end-functionalize polyolefins with post-polymerization modification and selective copolymerization strategies. The strategies enable simple, selective and productive approaches to access well-defined amphiphilic diblock and triblock copolymers containing both polyolefin blocks and polar blocks. Chapter 1 will state the problem and review the previous literature about the synthesis of telechelic polyolefins. This chapter provides an overview of the state-of-the-art strategies in order to obtain telechelic polyolefin, as the key precursor to access polyolefin-containing multiblock copolymers. Chapter 2 will cover the development of a one-pot methodology to access polyolefin-containing diblock copolymers. This general methodology is based on a catalytic tandem hydroformylation/hydrogenation reaction applicable to any polyolefin. Chapter 3 will cover the synthesis of polyethylene-containing triblock copolymers. As an extension of the end-functionalization methodology from chapter 2, the proposed post-polymerization functionalization succeeded in introducing one functionality both randomly in the middle of the polymer backbone and at one chain end, eventually leading to the branched polyethylene-containing triblock copolymer, or 3-miktoarm star. Chapter 4 will cover the design of isotactic polypropylene-containing triblock copolymers. Selective copolymerization strategy was adopted during the synthesis of telechelic polypropylene as the precursor, in order to maintain the stereoregularity of the backbone while also get precise control of the chain-end structure. The desired polypropylene-containing triblock copolymers were then accessed by post-polymerization modification.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-05-01","The student, Tianwei Yan, accepted the attached license on 2021-03-29 at 19:32.","Embargo set by: Seth Robbins for item 118635 Lift date: 2023-09-17T04:07:01Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/110790"],"dc:language":["en"],"dc:rights":["Copyright 2021 Tianwei Yan"],"dc:subject":["polyolefin","post-polymerization modification","block copolymer","selective copolymerization"],"dc:title":["Development of synthetic methodologies for polyolefin containing block copolymers"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Chemical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:52Z"}