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Supramolecular Templation of Trapped Entanglements in Polymer Networks
Supramolecular Templation of Trapped Entanglements in Polymer Networks
Supramolecular Templation of Trapped Entanglements in Polymer Networks

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211153041
ISBN  
9798346871880
DDC  
540
저자명  
Kruse, Benjamin J.
서명/저자  
Supramolecular Templation of Trapped Entanglements in Polymer Networks
발행사항  
[Sl] : The University of North Carolina at Chapel Hill, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
167 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
주기사항  
Advisor: Zhukhovitskiy, Aleksandr V.
학위논문주기  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2024.
초록/해제  
요약Polymer entanglements-topological constraints to chain motion-are fundamental features of polymers that have intrigued scientists for over 80 years. The presence of entanglements in polymers is believed to modify material properties, such as modulus and toughness, which are essential for most applications of soft materials. However, the precise examination of the relationship between how chains entangle and material properties has remained elusive due to both difficulty in synthesizing materials with controlled entanglement topologies and an inability to spectroscopically detect entanglements within the resulting polymer. Controlled installation of entanglements in polymer networks could allow for the direct study of the effects of entanglements on material properties and help to improve existing models for polymer elasticity. In this dissertation, I present my work in the pursuit of installing trapped entanglements in polymer networks and the resulting properties that arise from the inclusion of these mechanical bonds. Chapter 1 provides a background on entanglements, as well as an outline of current methods used to install and characterize entanglements in soft materials. Chapter 2 details an approach to install trapped entanglements in poly(ethylene glycol) (PEG) networks from supramolecular templates composed of phenanthroline-copper(I) complexes. Lastly, Chapter 3 outlines attempts to expand on the installation of trapped entanglements in gels through the creation of an "Olympic" gel (OG), named after its resemblance to the iconic interlocking Olympic rings. Altogether, my work aims to advance our understanding of entanglements in polymer networks by better establishing topology-property relationships in soft materials. Additionally, this work demonstrates a novel approach to tune mechanical properties of polymer networks through the design of a methodology allowing for the controlled installation of entanglements in a network.
일반주제명  
Chemistry
일반주제명  
Polymer chemistry
일반주제명  
Organic chemistry
키워드  
Supramolecular templates
키워드  
Trapped entanglements
키워드  
Polymer networks
키워드  
Poly(ethylene glycol)
기타저자  
The University of North Carolina at Chapel Hill Chemistry
기본자료저록  
Dissertations Abstracts International. 86-06B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a540
■1001  ▼aKruse,  Benjamin  J.
■24510▼aSupramolecular  Templation  of  Trapped  Entanglements  in  Polymer  Networks
■260    ▼a[Sl]▼bThe  University  of  North  Carolina  at  Chapel  Hill▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a167  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-06,  Section:  B.
■500    ▼aAdvisor:  Zhukhovitskiy,  Aleksandr  V.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2024.
■520    ▼aPolymer  entanglements-topological  constraints  to  chain  motion-are  fundamental  features  of  polymers  that  have  intrigued  scientists  for  over  80  years.  The  presence  of  entanglements  in  polymers  is  believed  to  modify  material  properties,  such  as  modulus  and  toughness,  which  are  essential  for  most  applications  of  soft  materials.  However,  the  precise  examination  of  the  relationship  between  how  chains  entangle  and  material  properties  has  remained  elusive  due  to  both  difficulty  in  synthesizing  materials  with  controlled  entanglement  topologies  and  an  inability  to  spectroscopically  detect  entanglements  within  the  resulting  polymer.  Controlled  installation  of  entanglements  in  polymer  networks  could  allow  for  the  direct  study  of  the  effects  of  entanglements  on  material  properties  and  help  to  improve  existing  models  for  polymer  elasticity.  In  this  dissertation,  I  present  my  work  in  the  pursuit  of  installing  trapped  entanglements  in  polymer  networks  and  the  resulting  properties  that  arise  from  the  inclusion  of  these  mechanical  bonds.  Chapter  1  provides  a  background  on  entanglements,  as  well  as  an  outline  of  current  methods  used  to  install  and  characterize  entanglements  in  soft  materials.  Chapter  2  details  an  approach  to  install  trapped  entanglements  in  poly(ethylene  glycol)  (PEG)  networks  from  supramolecular  templates  composed  of  phenanthroline-copper(I)  complexes.  Lastly,  Chapter  3  outlines  attempts  to  expand  on  the  installation  of  trapped  entanglements  in  gels  through  the  creation  of  an  "Olympic"  gel  (OG),  named  after  its  resemblance  to  the  iconic  interlocking  Olympic  rings.  Altogether,  my  work  aims  to  advance  our  understanding  of  entanglements  in  polymer  networks  by  better  establishing  topology-property  relationships  in  soft  materials.  Additionally,  this  work  demonstrates  a  novel  approach  to  tune  mechanical  properties  of  polymer  networks  through  the  design  of  a  methodology  allowing  for  the  controlled  installation  of  entanglements  in  a  network.
■590    ▼aSchool  code:  0153.
■650  4▼aChemistry
■650  4▼aPolymer  chemistry
■650  4▼aOrganic  chemistry
■653    ▼aSupramolecular  templates
■653    ▼aTrapped  entanglements
■653    ▼aPolymer  networks
■653    ▼aPoly(ethylene  glycol)
■690    ▼a0485
■690    ▼a0495
■690    ▼a0490
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bChemistry.
■7730  ▼tDissertations  Abstracts  International▼g86-06B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164753▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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