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과산화물 매개 알킬-알킬 커플링 반응을 이용한 ABA- 유형 올레핀 트리 블록 공중합체의 합성
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이분열 | - |
| dc.contributor.author | 김성동 | - |
| dc.date.accessioned | 2019-04-01T16:40:47Z | - |
| dc.date.available | 2019-04-01T16:40:47Z | - |
| dc.date.issued | 2019-02 | - |
| dc.identifier.other | 28369 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/14947 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2019. 2 | - |
| dc.description.tableofcontents | 1. Introduction 1 2. Results and Discussion 3 2.1 Alkyl-alkyl coupling reaction of dialkylzinc 3 2.2 Preparation of PE-b-poly(ethylene-co-propylene)-b-PE 8 2.3 Characterization of PE-b-poly(ethylene-co-propylene)-b-PE 12 2.4 Preparation of iPP-b-poly(ethylene-co-propylene)-b-iPP 13 3. Conclusions 14 4. Experimental Section 15 4.1 General remarks 15 4.2 Synthesis of (Oct)2Zn 15 4.3 Reaction between (Oct)2Zn and lauroyl peroxide 16 4.4 PE-b-poly(ethylene-co-propylene)-b-PE (entry 4 in Table 1) 16 5. Acknowledgements 17 6. Reference 18 7. Supporting information 26 | - |
| dc.language.iso | kor | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | 과산화물 매개 알킬-알킬 커플링 반응을 이용한 ABA- 유형 올레핀 트리 블록 공중합체의 합성 | - |
| dc.title.alternative | KIM SUNG DONG | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.alternativeName | KIM SUNG DONG | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2019. 2 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 905352 | - |
| dc.identifier.uci | I804:41038-000000028369 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/common/orgView/000000028369 | - |
| dc.description.alternativeAbstract | Synthesis and applications of block copolymers are a main theme in polymer chemistry. Especially, polyolefin (PO)-based block copolymers are of immense research interest in both academia and industry with a huge industrial impact in some cases. Multistep strategies (e.g., hydrogenation followed by the controlled ring-opening metathesis polymerization (ROMP) or the controlled anionic polymerization) have been developed for the synthesis of PO-based block copolymers, but single step methods with direct use of common olefin monomers are practically more desirable. One of the direct methods is growing a PO-chain upon a living initiator by sequential addition or stepwise variation of the feed ratio of the two olefin monomers. Another commercially useful tool is the so-called "coordinative chain transfer polymerization (CCTP)" which involves the use of a single transition metal-based catalyst (e.g., 1 in Scheme 1) and a chain transfer agent (CTA, e.g., Et2Zn) in excess (e.g., [Zn]/[Hf] > 100). Once the alkyl exchange reaction between CTA and the catalyst is reversibly fast with minimal beta-elimination process, the consequence is uniform PO-chain growth from CTAs. In CCTP, the number of PO-chains generated per transition metal is advantageously high (e.g., [PO-chains]/[Hf] > 200) in comparison with that in the aforementioned living initiator based method where [PO-chains]/[Hf] = 1. The CCTP technique is actively used for precise design as well as end group functionalization of PO-chains. For example, diblock copolymers composed of high density polyethylene (HDPE) and very low density polyethylene (VLDPE) blocks were successfully prepared by sequential feed of ethylene and ethylene/1-octene mixed monomers in CCTP. Recently we also disclosed the preparation of poly(ethylene-co-1-octene)-b-polystyrene (PS) diblock copolymers by sequentially performing CCTP and anionic styrene polymerization in one pot | - |
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- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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