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고분자량의 poly(1,4-butylene carbonate-co-terephthalate) 합성과 열적 성질
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이분열 | - |
| dc.contributor.author | 이정재 | - |
| dc.date.accessioned | 2018-11-08T08:15:40Z | - |
| dc.date.available | 2018-11-08T08:15:40Z | - |
| dc.date.issued | 2014-02 | - |
| dc.identifier.other | 16089 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/11976 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2014. 2 | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | 고분자량의 poly(1,4-butylene carbonate-co-terephthalate) 합성과 열적 성질 | - |
| dc.title.alternative | Lee Jung Jae | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.alternativeName | Lee Jung Jae | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2014. 2 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 608747 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000016089 | - |
| dc.subject.keyword | biodegradable polymer | - |
| dc.subject.keyword | comspostable polymer | - |
| dc.subject.keyword | PBCT | - |
| dc.subject.keyword | PBAT | - |
| dc.subject.keyword | 생분해성 고분자 | - |
| dc.subject.keyword | polyester | - |
| dc.subject.keyword | polycarbonate | - |
| dc.subject.keyword | 폴리에스터 | - |
| dc.subject.keyword | 폴리카보네이트 | - |
| dc.description.alternativeAbstract | Condensation copolymerizations of 1,4-butanediol (BD), dimethyl carbonate (DMC), and dimethyl terephthalate (DMT) were conducted by a two-step procedure using sodium alkoxide (0.1–0.2 mol%) as a catalyst with a variable [DMT]/[BD] feed ratio. In the first step, oligomers bearing almost equal numbers of hydroxyl and methoxycarbonyl end-groups were generated, which were polycondensed mostly by the elimination of methanol at 190¬–210 °C under reduced pressure. By this procedure, high-molecular-weight poly(1,4-butylene carbonate-co-terephthalate)s (PBCTs) were easily prepared with Mw 60000¬–200000 in a reasonably short reaction time (~8.5 h) and even on large scale (110 g polymer/batch) in a 250 mL glass reactor. The PBCTs prepared at a high [DMT]/[BD] feed ratio 0.30¬–0.50 were semi-crystalline polymers with fast crystallization rates and melting temperatures in the range 95−146 °C, which were adjustable by the [DMT]/[BD] feed ratio. The glass transition temperatures were rather high around 0 °C. These thermal properties were comparable to those of commercialized compostable polyesters such as PLA, PHA, PBAT, and PBSA. | - |
- Appears in Collections:
- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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