DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Seo, Myungeun | - |
dc.contributor.advisor | 서명은 | - |
dc.contributor.author | Park, Jongmin | - |
dc.date.accessioned | 2021-05-11T19:39:49Z | - |
dc.date.available | 2021-05-11T19:39:49Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=871535&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/283360 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 화학과, 2019.8,[x, 122 p. :] | - |
dc.description.abstract | In this thesis, we propose a method to control the size and morphology of block polymer phase behaviors, and to prepare new polymer structures by varying the amount and types of selective additives. Systems containing selective additives such as a corresponding homopolymer, selective solvent, molecules with intermolecular interactions and non-solvents are proposed, and were used to investigate the effect of additives on polymerization-induced nanostructuring. The phase behavior of the block polymer materials was modulated by adding polylactide homopolymer (PLA-OH) and acetonitrile (MeCN) to a reaction mixture of styrene (S), divinylbenzene (DVB), polylactide macro-chain transfer agent (PLA-CTA). As a result, micro- and macrophase separation and self-assembly processes during polymerization were controlled, resulting in block polymer materials with controlled sizes and various morphologies. Also, by adding tannic acid, which forms intermolecular interactions with the PLA block, to a solution containing polystyrene-b-polylactide (PS-b-PLA), we studied how the chirality match between the polymer and additive molecules affected self-assembly behavior. Finally, we proposed a method of preparing a hierarchical structure, by inducing independent micro- and macro phase separation. A high internal phase emulsion (HIPE) was prepared by adding water as a non-solvent to a reaction mixture containing S, DVB and PLA-CTA, and then the water-oil interface was stabilized by the addition of a surfactant. By proceeding sequentially with the PIMS process and hyper-cross-linking, a hierarchically porous polymer with micro-, meso- and macroporous structures was successfully prepared. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | block polymer▼amicrophase separation▼amacrophase separation▼aself-assembly▼aselective environment | - |
dc.subject | 블록공중합체▼a미세상분리▼a거대상분리▼a자기조립▼a선택적환경 | - |
dc.title | Induction and arrest of block polymer self-assembly in selectivity-controlled environments | - |
dc.title.alternative | 선택성이 조절된 환경에서 블록공중합체 자기조립의 유도와 고정에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :화학과, | - |
dc.contributor.alternativeauthor | 박종민 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.