DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kim, Sang-Youl | - |
dc.contributor.advisor | 김상율 | - |
dc.contributor.author | Park, Sun-Kyu | - |
dc.contributor.author | 박선규 | - |
dc.date.accessioned | 2011-12-13T04:28:04Z | - |
dc.date.available | 2011-12-13T04:28:04Z | - |
dc.date.issued | 1999 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=151511&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/31502 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 화학과, 1999.2, [ vi, 131 p. ] | - |
dc.description.abstract | New amorphous poly(arylene ether ketone)s containing three kinds of substituent groups, trifluoromethyl, piperidylcarbonyl, and diphenylamide, with relatively high molecular weight were prepared through nucleophilic nitro displacement reaction from novel AA or AB type monomers. The nitromonomers activated by two electron withdrawing groups (carbonyl and pendent groups), 1,4-bis-(3-trifluoromethyl-4-nitrobenzoyl)benzene, 1,4-bis[4-nitro-3-(1-piperidylcarbonyl)benzoyl]benzene, 1,4-bis(3-N,N-diphenylcarbamoyl-4-nitrobenzoyl)benzene, 1,4-bis[3-(2-benzoxazoyl)-4-nitrobenzoyl]benzene, 1,4-bis[3-(2-phenyl-1,3,4-oxadiazoyl)-4-nitrobenzoyl]benzene, 4-hydroxy-4`-nitro-3`-trifluoromethylbenzophenone, and 4-(4-hydroxyphenoxy)3`-trifluoro-methyl-4`-nitrobenzophenone, were synthesized with a-aminoacetonitrile derivative, masked acylanion equivalent. This synthetic method may be useful for introducing various pendent groups on poly(arylene ether ketones) backbone. In order to demonstrate whether doubly activated monomers would undergo facile nucleophilic aromatic substitution and whether polymerization is feasible, the model reaction was studied with m-cresol. The model reaction revealed that nucleophilic aromatic substitution of the nitro groups began to occur at room temperature and was completed at 80℃ and the model compound was obtained in high isolated yield. Polymerizations of nitromonomers with several dihydroxy comonomers were carried out in a polar aprotic solvent with potassium carbonate as a base. The polymerizations of nitromonomers proceeded successfully, except heterocyclic ring containing monomers and 4-hydroxy-4`-nitro-3`-trifluoromethylbenzophenone monomer at mild condition. The concept of double activation with carbonyl and other electron withdrawing pendent group for facile expulsion of nitro leaving group was successfully applied to step polymerization at relatively mild condition. The thermal properties and solubilities of the polymers were investigated. ... | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Double activation | - |
dc.subject | Nitromonomer | - |
dc.subject | Nitro displacement reaction | - |
dc.subject | Substituted poly(arylene ether ketone) | - |
dc.subject | Nitro leaving group | - |
dc.subject | 니트로 이탈기 | - |
dc.subject | 이중 활성 | - |
dc.subject | 니트로 단량체 | - |
dc.subject | 니트로 치환 반응 | - |
dc.subject | 치환체를 갖는 폴리(아릴렌 에테르 케톤) | - |
dc.title | Synthesis and characterization of substituted poly(arylene ether ketone)s through nitro displacement reaction | - |
dc.title.alternative | 니트로 치환 반응을 이용한 치환체를 갖는 폴리(아릴렌 에테르 케톤)의 합성과 특성에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 151511/325007 | - |
dc.description.department | 한국과학기술원 : 화학과, | - |
dc.identifier.uid | 000955135 | - |
dc.contributor.localauthor | Kim, Sang-Youl | - |
dc.contributor.localauthor | 김상율 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.