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Preparation of Styrene Moiety-Carrying Diorganozinc Compound for Production of Polystyrene-Polyolefin-Polystyrene Triblock Copolymers
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이분열 | - |
| dc.contributor.author | 이종철 | - |
| dc.date.accessioned | 2022-11-29T02:32:31Z | - |
| dc.date.available | 2022-11-29T02:32:31Z | - |
| dc.date.issued | 2021-02 | - |
| dc.identifier.other | 30615 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/20059 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2021. 2 | - |
| dc.description.tableofcontents | 1. Introduction 1 2. Results and Discussion 4 2.1 Preparation of Diorganozinc Compound Carrying Styrene Moiety 4 2.2 CCTP Studies 8 2.3 Characterization & Synthesis of PS-block-poly(ethylene-co-1-hexene)-block-PS 10 2.4 Blending with Polypropylene (PP) 15 3. Conclusions 17 4. Experimental Section 19 4.1 General remarks 18 4.2 CCTcoP 20 4.3 Synthesis of PS-block-poly(ethylene-co-1-hexene)-block-PS 21 4.4 Specimen Preparation for TEM 22 4.5 Blend Specimen Preparation for SEM 22 4.6 X-ray Crystallography 22 5. Reference 23 6. Supporting information 29 | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | Preparation of Styrene Moiety-Carrying Diorganozinc Compound for Production of Polystyrene-Polyolefin-Polystyrene Triblock Copolymers | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2021. 2 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 1203349 | - |
| dc.identifier.uci | I804:41038-000000030615 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/common/orgView/000000030615 | - |
| dc.subject.keyword | Diorganozinc | - |
| dc.subject.keyword | Styrene moiety | - |
| dc.subject.keyword | Triblock copolymers | - |
| dc.description.alternativeAbstract | SEBS (i.e., polystyrene-block-poly(ethylene-co-1-butene)-block-polystyrene), prepared by SBS (i.e., polystyrene-block-polybutadiene-block-polystyrene) hydrogenation, has a good-function thermoplastic elastomer (TPE). Process of hydrogenation is not an easy task. Thermal processing impracticability may be another huddle in market expansion. Thus, we disclosed another simple one pot synthesis route for triblock copolymer like SEBS, performing coordinative chain transfer polymerization (CCTP), to grow polyolefin chains from organozinc compounds bearing styrene moiety, using a special initiator anionic styrene polymerization, allowing polystyrene chain growth from Zinc-carbon sites as well as from styrene moieties. Although the huge scale for preparation of highly pure organozinc compounds bearing styrene moiety was very difficult, we overcame with developing the synthesis of (CH2=CHC6H4CH2CH2CH2)2Zn (4), as a stable crystalline solid. 4 worked very well as chain transfer agent, enabling production of SEHS- PS-block-poly(ethylene-co-1-hexene)-block-PS which exhibits similar stress-strain curve as the commercial-grade SEBS. The SEHS better dispersed with PP, being a nice toughening agent in PP-blending than the commercial-grade SEBS. Furthermore, the SEHS was less viscous, exhibiting better workability. | - |
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- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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