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Low Tc Thiolactone Monomers for Chemically Recyclable Polythioesters
Low Tc Thiolactone Monomers for Chemically Recyclable Polythioesters
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105327
- ISBN
- 9798263325503
- DDC
- 600
- 서명/저자
- Low Tc Thiolactone Monomers for Chemically Recyclable Polythioesters
- 발행사항
- [Sl] : Georgia Institute of Technology, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 244 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
- 주기사항
- Advisor: Gutekunst, Will.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2025.
- 초록/해제
- 요약This thesis investigates the polymerization thermodynamics of thiolactones, focusing on their potential for chemical recycling to monomer (CRM). Chapter 2 examines a series of six-membered thiolactone derivatives, where methyl substitution and sulfur incorporation are used to modulate enthalpy, entropy, and ceiling temperature (Tc). Polymerization experiments and variable-temperature NMR reveal how structural changes impact polymerizability, while computational studies highlight the role of ring strain and conformation. Chapter 3 identifies common sources of error in Tc measurements, including incorrectly assigned entropy values, limited conversion ranges, and cyclic oligomer formation. Using Me₂-DTN as a model system, the chapter provides practical guidance for improving the accuracy and reproducibility of experimental Tc determinations. Chapter 4 examines the synthesis and characterization of chemically recyclable crosslinked polythioester networks, transitioning from linear to network polymers to enhance mechanical properties. The chapter also explores cyclic polythioester polymer formation via DBU initiation and the use of a dilipoate (DiLp) crosslinker to simplify synthesis and improve gel fraction. Together, these studies offer a framework for designing and characterizing low Tc monomers that support efficient chemical recycling.
- 일반주제명
- Mechanical properties
- 일반주제명
- Polymers
- 일반주제명
- Mass spectrometry
- 일반주제명
- Thermodynamics
- 일반주제명
- Recycling
- 일반주제명
- Solvents
- 일반주제명
- Polymerization
- 일반주제명
- Sulfur
- 일반주제명
- Crystallization
- 일반주제명
- Design
- 일반주제명
- Molecular weight
- 일반주제명
- Scientific imaging
- 일반주제명
- Chromatography
- 일반주제명
- Entropy
- 일반주제명
- Analytical chemistry
- 일반주제명
- Mechanics
- 일반주제명
- Medical imaging
- 일반주제명
- Polymer chemistry
- 일반주제명
- Sustainability
- 기본자료저록
- Dissertations Abstracts International. 87-05A.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105327
■006m o d
■007cr#unu||||||||
■020 ▼a9798263325503
■035 ▼a(MiAaPQ)AAI32307892
■035 ▼a(MiAaPQ)GeorgiaTech78657
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a600
■1001 ▼aStellmach, Kellie Anne.
■24510▼aLow Tc Thiolactone Monomers for Chemically Recyclable Polythioesters
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a244 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: A.
■500 ▼aAdvisor: Gutekunst, Will.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2025.
■520 ▼aThis thesis investigates the polymerization thermodynamics of thiolactones, focusing on their potential for chemical recycling to monomer (CRM). Chapter 2 examines a series of six-membered thiolactone derivatives, where methyl substitution and sulfur incorporation are used to modulate enthalpy, entropy, and ceiling temperature (Tc). Polymerization experiments and variable-temperature NMR reveal how structural changes impact polymerizability, while computational studies highlight the role of ring strain and conformation. Chapter 3 identifies common sources of error in Tc measurements, including incorrectly assigned entropy values, limited conversion ranges, and cyclic oligomer formation. Using Me₂-DTN as a model system, the chapter provides practical guidance for improving the accuracy and reproducibility of experimental Tc determinations. Chapter 4 examines the synthesis and characterization of chemically recyclable crosslinked polythioester networks, transitioning from linear to network polymers to enhance mechanical properties. The chapter also explores cyclic polythioester polymer formation via DBU initiation and the use of a dilipoate (DiLp) crosslinker to simplify synthesis and improve gel fraction. Together, these studies offer a framework for designing and characterizing low Tc monomers that support efficient chemical recycling.
■590 ▼aSchool code: 0078.
■650 4▼aMechanical properties
■650 4▼aPolymers
■650 4▼aMass spectrometry
■650 4▼aThermodynamics
■650 4▼aRecycling
■650 4▼aNuclear magnetic resonance--NMR
■650 4▼aSolvents
■650 4▼aPolymerization
■650 4▼aSulfur
■650 4▼aCrystallization
■650 4▼aDesign
■650 4▼aMolecular weight
■650 4▼aScientific imaging
■650 4▼aChromatography
■650 4▼aEntropy
■650 4▼aAnalytical chemistry
■650 4▼aMechanics
■650 4▼aMedical imaging
■650 4▼aPolymer chemistry
■650 4▼aSustainability
■690 ▼a0389
■690 ▼a0800
■690 ▼a0348
■690 ▼a0486
■690 ▼a0346
■690 ▼a0574
■690 ▼a0495
■690 ▼a0640
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05A.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360245▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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