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Polymer Deconstruction and Chemical Transformation Through Catalyst-Controlled Photooxidation and Photothermal Conversion
Polymer Deconstruction and Chemical Transformation Through Catalyst-Controlled Photooxidation and Photothermal Conversion
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104639
- ISBN
- 9798293824984
- DDC
- 547
- 저자명
- Oh, Sewon.
- 서명/저자
- Polymer Deconstruction and Chemical Transformation Through Catalyst-Controlled Photooxidation and Photothermal Conversion
- 발행사항
- [Sl] : Cornell University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 520 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Fors, Brett.
- 학위논문주기
- Thesis (Ph.D.)--Cornell University, 2025.
- 초록/해제
- 요약Plastics are ubiquitous in society due to their diverse applications, but they persist in nature without degradation, creating environmental problems for living creatures. Unfortunately, most recycling techniques either downgrade the quality of virgin plastics or demand high energy inputs, consequently necessitating other efficient approaches. To address these problems, photo-mediated strategies were developed to upcycle or recycle plastic wastes to useful small molecule feedstocks as sustainable alternatives for the plastic valorization.The contents of this dissertation detail the developments of catalyst-controlled photooxidation and photothermal conversion for polymer deconstruction and chemical transformation. Chapter 1 presents the challenges of current plastic recycling techniques and introduces the concepts of photooxidative degradation and photothermal conversion. Chapter 2 describes the optimization of photooxidative degradation of polystyrene to benzoic acid using a chlorine radical generated by light irradiation to FeCl3. Chapter 3 expands upon this work and investigates the polystyrene degradation mechanism and product distribution using a site-selective bromine radical from a FeBr3 photocatalyst. Chapter 4 utilizes a similar bromine radical system to initiate the cumene-phenol process to transform cumene to phenol. Chapter 5 shows the optimization of photothermal depolymerization of polystyrene to styrene monomer using carbon black as a photothermal agent and white LED light. Chapter 6 explores the synthesis of copolymers with strained bicyclobutane comonomers and assesses their thermal properties and depolymerization behaviors through photothermal depolymerization.
- 일반주제명
- Organic chemistry
- 일반주제명
- Polymer chemistry
- 일반주제명
- Plastics
- 키워드
- Photooxidation
- 키워드
- Benzoic acid
- 키워드
- Depolymerization
- 기타저자
- Cornell University Chemistry and Chemical Biology
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798293824984
■035 ▼a(MiAaPQ)AAI32113765
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a547
■1001 ▼aOh, Sewon.▼0(orcid)0000-0002-6453-4621
■24510▼aPolymer Deconstruction and Chemical Transformation Through Catalyst-Controlled Photooxidation and Photothermal Conversion
■260 ▼a[Sl]▼bCornell University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a520 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Fors, Brett.
■5021 ▼aThesis (Ph.D.)--Cornell University, 2025.
■520 ▼aPlastics are ubiquitous in society due to their diverse applications, but they persist in nature without degradation, creating environmental problems for living creatures. Unfortunately, most recycling techniques either downgrade the quality of virgin plastics or demand high energy inputs, consequently necessitating other efficient approaches. To address these problems, photo-mediated strategies were developed to upcycle or recycle plastic wastes to useful small molecule feedstocks as sustainable alternatives for the plastic valorization.The contents of this dissertation detail the developments of catalyst-controlled photooxidation and photothermal conversion for polymer deconstruction and chemical transformation. Chapter 1 presents the challenges of current plastic recycling techniques and introduces the concepts of photooxidative degradation and photothermal conversion. Chapter 2 describes the optimization of photooxidative degradation of polystyrene to benzoic acid using a chlorine radical generated by light irradiation to FeCl3. Chapter 3 expands upon this work and investigates the polystyrene degradation mechanism and product distribution using a site-selective bromine radical from a FeBr3 photocatalyst. Chapter 4 utilizes a similar bromine radical system to initiate the cumene-phenol process to transform cumene to phenol. Chapter 5 shows the optimization of photothermal depolymerization of polystyrene to styrene monomer using carbon black as a photothermal agent and white LED light. Chapter 6 explores the synthesis of copolymers with strained bicyclobutane comonomers and assesses their thermal properties and depolymerization behaviors through photothermal depolymerization.
■590 ▼aSchool code: 0058.
■650 4▼aOrganic chemistry
■650 4▼aPolymer chemistry
■650 4▼aPlastics
■653 ▼aPhotothermal conversion
■653 ▼aPhotooxidation
■653 ▼aEnvironmental problems
■653 ▼aBenzoic acid
■653 ▼aDepolymerization
■690 ▼a0490
■690 ▼a0495
■690 ▼a0795
■71020▼aCornell University▼bChemistry and Chemical Biology.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0058
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358292▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
