Preparation of High-Molecular-Weight Poly(1,4-butylene carbonate-co-aromatic ester) and its chopping to Produce Macropolyols

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dc.contributor.advisor이분열-
dc.contributor.author박근호-
dc.date.accessioned2018-11-08T08:16:13Z-
dc.date.available2018-11-08T08:16:13Z-
dc.date.issued2016-02-
dc.identifier.other21671-
dc.identifier.urihttps://dspace.ajou.ac.kr/handle/2018.oak/12098-
dc.description학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2016. 2-
dc.description.tableofcontents1. Introduction 1 2. Experimental 3 2.1 General remarks 3 2.2 Preparation of high-molecular-weight poly(1,4-butylene carbonate-co-aromatic ester)s 3 2.3 Chopping the high-molecular-weight poly(1,4-butylene carbonate-co-aromatic ester)s 4 3. Results and discussion 5 3.1 Preparation of high-molecular-weight poly(1,4-butylene carbonate-co-aromatic ester)s 5 3.2 Chopping the high-molecular-weight poly(1,4-butylene carbonate-co-aromatic ester)s 7 3.3 Properties and characterization of the macropolyols 14 4. Conclusions 19 5. Acknowledgements 20 6. Reference 21-
dc.language.isoeng-
dc.publisherThe Graduate School, Ajou University-
dc.rights아주대학교 논문은 저작권에 의해 보호받습니다.-
dc.titlePreparation of High-Molecular-Weight Poly(1,4-butylene carbonate-co-aromatic ester) and its chopping to Produce Macropolyols-
dc.typeThesis-
dc.contributor.affiliation아주대학교 일반대학원-
dc.contributor.department일반대학원 분자과학기술학과-
dc.date.awarded2016. 2-
dc.description.degreeMaster-
dc.identifier.localId739438-
dc.identifier.urlhttp://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000021671-
dc.subject.keywordMacropolyol-
dc.subject.keywordPolyurethane-
dc.subject.keywordCO2-utilization-
dc.subject.keywordDimethyl carbonate-
dc.subject.keywordPolycondensation-
dc.description.alternativeAbstractThe condensation of a mixture of dimethyl carbonate (DMC) and the phthalate derivatives (dimethyl terephthalate, dimethyl isophthalate, and dimethyl phthalate) with 1,4-butanediol (BD), using a sodium alkoxide catalyst, generated high-molecular-weight poly(1,4-butylene carbonate-co-aromatic ester)s with Mn values of 50000−120000. The subsequent addition of polyols (BD, glycerol propoxylate, 1,1,1-tris(hydroxymethyl)ethane, or pentaerythritol) chopped the generated high-molecular-weight polymers to afford macrodiols or macropolyols with facile control of their molecular weight (Mn, 2000−3000) and unique chain topological composition. Macropolyols prepared by chopping poly(1,4-butylene carbonate-co-terephthalate) were waxy in nature, whereas those containing isophthalate and phthalate units were instead oily. The glass transition temperatures observed for the macropolyols increased from −50 to −30 °C upon increasing the proportion of aromatic ester units, and the viscosity of the oily compounds increased on incorporating the aromatic ester units. DMC is a benign chemical produced from CO2; phthalate derivatives are also inexpensive chemicals that can be produced on a large scale. The macropolyols synthesized by this chopping method may have potential applications in the polyurethane industry.-
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Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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