DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kim, Sang-Youl | - |
dc.contributor.advisor | 김상율 | - |
dc.contributor.author | Yim, Byoung-Tak | - |
dc.contributor.author | 임병탁 | - |
dc.date.accessioned | 2015-04-23T02:22:30Z | - |
dc.date.available | 2015-04-23T02:22:30Z | - |
dc.date.issued | 2014 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=568656&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/196465 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 화학과, 2014.2, [ viii, 64 p. ] | - |
dc.description.abstract | This thesis deals with functional polyolefins consisting of polyolefin chains and other functional groups, which allow unique properties such as compatibility and self-healability. It consists of three chapters, concerning the functionalized polyolefins prepared through a combination of coordination polymerization and controlled living radical polymerization/grafting techniques as well as their unique properties. In chapter 2, end-functionalized poly(ethylene-co-propylene) (PEP) macro RAFT chain transfer agents were prepared by a series of end functionalization of PEP with the vinylidene end group via thiol-ene ‘Click’ reaction and esterification. By using these PEP macro chain transfer agents, the controlled living radical polymerizations of styrene were carried out to give PEP-b-PS block copolymers. SEM observation of PE/PS blends compatibilized with the block copolymer revealed that the size of PS domain dispersed in PEP matrix became finer in the range of 5~10μm. Chapter 3 includes synthesis of photo-responsive block copolymer based on end-functionalized PEP macro chain transfer agent. The end-functionalized PEP copolymer was employed as a macro RAFT chain transfer agent for controlled radical polymerization of 7-ethoxy-4-methyl-coumrinm methacrylate and 2-ethylhexylacrylate. 1H NMR analysis confirmed that the chain extension of end-functionalized PEP copolymer from macro CTA was successful PEP-based block copolymers. The block copolymers showed interesting photo-responsive properties like photo-coupling and photo-dissociation under the condition of UVA and UVC irradia-tion. Furthermore, it was shown that the intentional damage of the polymer film disappeared with the irradiation of UV light. In chapter 4, side-chain functionalized polyolefin was prepared by the synthesis of reactive polyolefin from ethylene and 5-ethylidenenorbornene followed by thiol-ene ‘Click’ reaction with mercaptoproponicacid, and esterification with the reagents which can undergo... | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Functional polyolefin | - |
dc.subject | 자기치유 고분자 | - |
dc.subject | 열감응형 폴리올레핀 | - |
dc.subject | 광기능성 폴리올레핀 아클릴레이트 블록공중합체 | - |
dc.subject | 상용화제 | - |
dc.subject | 기능성 폴리올레핀 | - |
dc.subject | compatibilizer | - |
dc.subject | Photo-sensitive polyolefin-acrylate block copolymer | - |
dc.subject | Thermo-sensitive polyolefin copolymer | - |
dc.subject | Self-healing polymer | - |
dc.title | Synthesis of functional polyolefins via chain-end modification reactions | - |
dc.title.alternative | 말단기 개질반응을 이용한 기능성 폴리올레핀 합성연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 568656/325007 | - |
dc.description.department | 한국과학기술원 : 화학과, | - |
dc.identifier.uid | 020105156 | - |
dc.contributor.localauthor | Kim, Sang-Youl | - |
dc.contributor.localauthor | 김상율 | - |
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