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Elucidating Molecular Behaviors of Polymers, Proteins, and Surfactants at Buried Interfaces Using Sum Frequency Generation Vibrational Spectroscopy
Elucidating Molecular Behaviors of Polymers, Proteins, and Surfactants at Buried Interfaces Using Sum Frequency Generation Vibrational Spectroscopy
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153006
- ISBN
- 9798384044109
- DDC
- 540
- 저자명
- Gao, Jinpeng.
- 서명/저자
- Elucidating Molecular Behaviors of Polymers, Proteins, and Surfactants at Buried Interfaces Using Sum Frequency Generation Vibrational Spectroscopy
- 발행사항
- [Sl] : University of Michigan, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 150 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Chen, Zhan.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2024.
- 초록/해제
- 요약The way molecules behave at the interfaces where different materials meet plays a key role in how these materials can separate or come together, affecting their overall characteristics. Understanding the structure of molecules at these interfaces is crucial for creating new materials with desired properties. This thesis utilizes sum frequency generation (SFG) vibrational spectroscopy to investigate interfacial molecular interactions and structures. From the detailed investigation of the interfacial adsorption behavior and antifouling capabilities of polymers to the optimization of oil-water separation processes, and the reinforcement attributes of carbon fiber-reinforced polymers (CFRPs), each research facet unveils unique molecular insights. The first project presented in this thesis reveals the interfacial adsorption behavior and antifouling mechanisms of a copolymer designed for resisting malodor for laundry formulation using SFG. It is found that the copolymer actively segregates to a model textile surface with and without the presence of detergent surfactants, and effectively prevents/reduces protein adsorption. Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D) is used to provide supplemental information on the copolymer and protein adsorption behavior, which can be qualitatively correlated to SFG results (Chapter 2). Further SFG studies are performed to examine the molecular structures of an adhesive protein fibrinogen adsorbed on the model textile surface with and without adsorbed surfactants, using a newly developed Hamiltonian SFG data analysis methodology. QCM-D is also used to study the interfacial copolymer adsorption and antifouling activity. The QCM-D results can be quantitatively correlated to the SFG data presented in Chapter 2. This research provides further in-depth understanding of the interfacial behaviors and interactions of copolymer, surfactant, and protein at buried solid/liquid interface. This study also underscores the combined use of SFG and QCM-D in advancing our understanding of molecular interfacial interactions (Chapter 3). SFG is also applied to study interfacial behavior of surfactants and protein at oil/water interfaces. It is found that surfactant molecules can disrupt or remove proteins at the corn oil/water interface, facilitating the oil-water separation. Here SFG is used to study interactions between interfacial glutelin molecules and a conventional surfactant as well as an extended surfactant. Under certain conditions (high temperature and with salt in the solution), extended surfactant can disrupt/remove interfacial glutelin faster, demonstrating the feasibility of using extended surfactant in oil-water separations (Chapter 4). SFG is used to study interfacial behavior of a sizing agent (composed of polyethyleneimine or PEI and surfactants) used to enhance wettability and adhesion between polymer matrices and carbon fibers, supplemented by interfacial tension measurements. It is found that the interfacial tension is mainly determined by the surfactant molecules in the sizing mixture, while SFG can provide more details regarding the interfacial behaviors of both PEI and surfactant (Chapter 5). In summary, this thesis applies SFG to elucidate molecular structures and behaviors of polymers, surfactants, and proteins at buried solid/liquid and liquid/liquid interfaces in situ in real time. Such knowledge is crucial for understanding interfacial interactions and interfacial properties, guiding the design and optimization of interfaces with desired functions. Interfaces are important in many applications ranging from antifouling coatings to oil-water separation, to polymer composites, and beyond.
- 일반주제명
- Chemistry
- 일반주제명
- Materials science
- 일반주제명
- Polymer chemistry
- 일반주제명
- Analytical chemistry
- 키워드
- Surfactants
- 기타저자
- University of Michigan Chemistry
- 기본자료저록
- Dissertations Abstracts International. 86-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798384044109
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■035 ▼a(MiAaPQ)umichrackham005623
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aGao, Jinpeng.
■24510▼aElucidating Molecular Behaviors of Polymers, Proteins, and Surfactants at Buried Interfaces Using Sum Frequency Generation Vibrational Spectroscopy
■260 ▼a[Sl]▼bUniversity of Michigan▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a150 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Chen, Zhan.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2024.
■520 ▼aThe way molecules behave at the interfaces where different materials meet plays a key role in how these materials can separate or come together, affecting their overall characteristics. Understanding the structure of molecules at these interfaces is crucial for creating new materials with desired properties. This thesis utilizes sum frequency generation (SFG) vibrational spectroscopy to investigate interfacial molecular interactions and structures. From the detailed investigation of the interfacial adsorption behavior and antifouling capabilities of polymers to the optimization of oil-water separation processes, and the reinforcement attributes of carbon fiber-reinforced polymers (CFRPs), each research facet unveils unique molecular insights. The first project presented in this thesis reveals the interfacial adsorption behavior and antifouling mechanisms of a copolymer designed for resisting malodor for laundry formulation using SFG. It is found that the copolymer actively segregates to a model textile surface with and without the presence of detergent surfactants, and effectively prevents/reduces protein adsorption. Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D) is used to provide supplemental information on the copolymer and protein adsorption behavior, which can be qualitatively correlated to SFG results (Chapter 2). Further SFG studies are performed to examine the molecular structures of an adhesive protein fibrinogen adsorbed on the model textile surface with and without adsorbed surfactants, using a newly developed Hamiltonian SFG data analysis methodology. QCM-D is also used to study the interfacial copolymer adsorption and antifouling activity. The QCM-D results can be quantitatively correlated to the SFG data presented in Chapter 2. This research provides further in-depth understanding of the interfacial behaviors and interactions of copolymer, surfactant, and protein at buried solid/liquid interface. This study also underscores the combined use of SFG and QCM-D in advancing our understanding of molecular interfacial interactions (Chapter 3). SFG is also applied to study interfacial behavior of surfactants and protein at oil/water interfaces. It is found that surfactant molecules can disrupt or remove proteins at the corn oil/water interface, facilitating the oil-water separation. Here SFG is used to study interactions between interfacial glutelin molecules and a conventional surfactant as well as an extended surfactant. Under certain conditions (high temperature and with salt in the solution), extended surfactant can disrupt/remove interfacial glutelin faster, demonstrating the feasibility of using extended surfactant in oil-water separations (Chapter 4). SFG is used to study interfacial behavior of a sizing agent (composed of polyethyleneimine or PEI and surfactants) used to enhance wettability and adhesion between polymer matrices and carbon fibers, supplemented by interfacial tension measurements. It is found that the interfacial tension is mainly determined by the surfactant molecules in the sizing mixture, while SFG can provide more details regarding the interfacial behaviors of both PEI and surfactant (Chapter 5). In summary, this thesis applies SFG to elucidate molecular structures and behaviors of polymers, surfactants, and proteins at buried solid/liquid and liquid/liquid interfaces in situ in real time. Such knowledge is crucial for understanding interfacial interactions and interfacial properties, guiding the design and optimization of interfaces with desired functions. Interfaces are important in many applications ranging from antifouling coatings to oil-water separation, to polymer composites, and beyond.
■590 ▼aSchool code: 0127.
■650 4▼aChemistry
■650 4▼aMaterials science
■650 4▼aPolymer chemistry
■650 4▼aAnalytical chemistry
■653 ▼aSum frequency generation
■653 ▼aSurfactants
■653 ▼aOil-water separation
■653 ▼aCarbon fiber-reinforced polymers
■653 ▼aMaterial properties
■690 ▼a0485
■690 ▼a0486
■690 ▼a0794
■690 ▼a0495
■71020▼aUniversity of Michigan▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164472▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
