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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 童世煌(Shih-Huang Tung) | |
dc.contributor.author | Yu-Ho Chen | en |
dc.contributor.author | 陳俞合 | zh_TW |
dc.date.accessioned | 2021-07-11T15:44:48Z | - |
dc.date.available | 2023-08-10 | |
dc.date.copyright | 2018-08-10 | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018-08-08 | |
dc.identifier.citation | 參考文獻
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IEEE Electrical Insulation Magazine 1993, 9(1), 30-38. 28. Rolando, T. E., Water- based Adhesives, Solvent-Free Adhesives, Ismithers Rapra Publishing, 1998, 5-7. 29. Kevin, M. ; Ricardo, G. ; Angelita, S. ; Markus, B., VAE-dispersions for a variety of coatings applications. Architectural Coatings 2016, 1-5. 30. Kim, S. ; Kim, H. J. ; Choi, Y. M. ; Jang, S. W., Characteristics of Non-plasticizer PVAc Resin for Wood Products. Journal of the Korean Wood Science and Technology 2007, 35(2), 61-68. 31. Gruber, B. A.; Vratsanos, M. S.; Smith, C. D., Effects of colloidal stabilizer on vinyl acetate‐ethylene copolymer emulsions and films. Macromolecular Symposia 2000, 155(1), 163-170. 32. Bidsorkhi, H.C. ; Adelnia, H.; Heidar-Pour, R., Preparation and characterization of ethylene-vinyl acetate/halloysite nanotube nanocomposites. Journal of Materials Science 2015, 50, 3237-3245. 33. 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S. ; Rijal, B. ; Delbreilh, L. ; Fatyeyeva, K. ; Saiter, A. ; Dargent, E., Segmental mobility and glass transition of poly(ethylene-vinyl acetate) copolymers: Is there a continuum in the dynamic glass transitions from PVAc to PE. Polymer 2015, 76(12), 213-219. 38. Wypych, G., HDPE high density polyethylene, Handbook of Polymers, 2nd ed., ChemTec Publishing, 2016, 156-163. 39. Wypych, G., LDPE low density polyethylene. Handbook of Polymers, 2nd ed., ChemTec Publishing, 2016, 178-184. 40. Wypych, G., LLDPE linear low density polyethylene. Handbook of Polymers, 2nd ed., ChemTec Publishing, 2016, 185-189. 41. Wypych, G., PVAl poly(vinyl alcohol). Handbook of Polymers, 2nd ed., ChemTec Publishing, 2016, 610-614. 42. Yang, S. B.;Yoo, S. H.;Lee, J. S.;Kim, J. W.;Yeum, J. H, Surface Properties of a Novel Poly ( vinyl alcohol ) Film Prepared by Heterogeneous Saponification of Poly ( vinyl acetate ) Film. Polymers 2017, 9(10), 493-501. 43. Lai, Y. Y.;Yang, H. R.,高分子化學結構分析. The Taiwan I.Ch.E. 2017, 64, 4-14. 44. Pavia, D. L.;Lampman, G. M.;Kriz, G. S. , Introduction to Spectroscopy: A Guide for Students of Organic Chemistry. Harcourt College Publishers, U.S.A, 2001. 45. Liu, L.; Liu, Y.;Liu, Y.;Wang,Q., Efficient flame retardant polyvinyl alcohol membrane through surface graft method, RSC Advances 2016, 6, 35051-35057. 46. Islam, N.;Haldorai, Y.;Van, H.;Shim, J. J., Synthesis of Poly(vinyl pivalate) by Atom Transfer Radical Polymerization in Supercritical Carbon Dioxide. European Polymer Journal 2014, 61, 93-104. 47. Petit, J. M.; Zhu, X. X., 1H and 13C NMR Study on Local Dynamics of Poly(vinyl alcohol) in Aqueous Solutions. Macromolecules 1996, 29 (6), 2075-2081. 48. Choi, S. S.;Kim, E. , Comparison of Vinyl Acetate Contents of Poly(Ethylene-co-Vinyl Acetate) Analyzed by IR, NMR, and TGA. Elastomers and Composites 2015, 50, 18-23. 49. Fulmer, G. R.;Miller, A. J. M.;Sherden, N. H.;Gottlieb, H. E.;Nudelman, A.; Stoltz, B. M.; Bercaw, J. E.;Goldberg, K. I., NMR Chemical Shifts of Trace Impurities: Common Laboratory Solvents, Organics, and Gases in Deuterated Solvents Relevant to the Organometallic Chemist. Organometallics 2010, 29 (9), 2176-2179. 50. Grau, E., Polymerization of ethylene : from free radical homopolymerization to hybrid radical /catalytic copolymerization. Polymers 2010, 68-70. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/79111 | - |
dc.description.abstract | 醋酸乙烯酯和乙烯共聚物(Vinyl Acetate-Ethylene Copolymer, VAE)是工業上應用極廣的產品,經常作為黏合劑使用。VAE乳液是由乳化聚合方式生產,本研究主要針對氧化還原起始法(redox)所合成的VAE乳液做系統性的分析,乳化聚合是製備聚合物膠乳最常見方式,其中基本的成分包括水、低水溶性單體、起始劑和界面活性劑。我們在聚合過程中不同反應時間點取樣,探討VAE乳液固含量、粒徑大小與分佈、流變行為隨著反應時間的變化;藉由熱分析、元素分析、X光散射實驗得知乳液組成隨時間的變化為醋酸乙烯酯先上升後下降,而乙烯組成先下降後上升,在物性分析實驗結果都與VAE乳液組成有關。另一個重要發現為VAE乳液存有兩個玻璃轉移溫度,溫度區間15°C ~ 25°C的玻璃轉移溫度有較大的熱流量,由富含醋酸乙烯酯的無定形結構所產生;溫度-20°C左右的玻璃轉移溫度較不明顯,並且有較低的溫度值,可能含有比較多一些的乙烯組成。最後我們透過1H NMR圖譜上結果推測分支路徑並對此建立VAE乳液的反應機制。 | zh_TW |
dc.description.abstract | Emulsions of vinyl acetate-ethylene (VAE) copolymers have been widely used in industry as adhesives. In this study, we investigate VAE emulsions which were prepared by emulsion polymerization in the presence of a redox initiator. The emulsion polymerization is the most common way to prepare polymer latex, and the basic components include water, poorly water-soluble monomers, initiators, and surfactants. We analyzed the samples at different reaction time during the polymerization process to investigate the solid content, particle size and distribution, and rheological behavior of VAE emulsions. Through the thermal analysis, elemental analysis, and X-ray scattering experiments, we found that the experimental results are closely related to the VAE composition, and the fraction of vinyl acetate in VAE first rises and then decreases with time, while that of ethylene decreases first and then rises. Another important result is that VAE shows two glass transition temperatures. The main glass transition is between 15°C and 25°C , which is caused by the amorphous structure of the vinyl acetate-rich segments. The glass transition at lower temperature, around -20°C, is less obvious in the DSC curve, which is caused by more ethylene composition. Finally, we determined the branching route of VAE chains through the analyses of the 1H NMR spectrum and proposed the reaction mechanism for VAE emulsion. | en |
dc.description.provenance | Made available in DSpace on 2021-07-11T15:44:48Z (GMT). No. of bitstreams: 1 ntu-107-R05549002-1.pdf: 6763831 bytes, checksum: be19ffd0f3368ce21359b7c9c3cb25df (MD5) Previous issue date: 2018 | en |
dc.description.tableofcontents | 口試委員審定書 I
誌謝 II 摘要 III Abstract IV 目錄 V 圖目錄 IX 表目錄 XII 第一章 緒論 1 1.1前言 1 1.2研究動機 2 第二章 文獻回顧 3 2.1乳化聚合 3 2.1.1乳化聚合概述 3 2.1.2乳化聚合製程 4 2.1.3乳化聚合動力學 6 2.2 VAE乳液 8 2.2.1 VAE乳化聚合概述 8 2.2.2 VAE乳液性質 9 2.2.3 VAE乳液結構 11 第三章 實驗方法與儀器 16 3.1實驗藥品 16 3.2實驗步驟 18 3.2.1 VAE乳液 18 3.2.2 VAE乳液基本性質 18 3.2.3 VAE乳液分離 19 3.2.4樣品製備與實驗流程 21 3.2.5 VAE乳液分支結構分析 24 3.3實驗儀器與原理 28 3.3.1元素分析儀 (Elemental Analyzer, EA) 28 3.3.2 粒徑分析儀(Particle Size Analyzer) 28 3.3.3 流變儀(Rheometer) 28 3.3.4 凝膠層析儀 (Gel Permeation Chromatagraphy, GPC ) 29 3.3.5示差掃描熱量分析儀(Differential Scanning Calorimetry, DSC) 29 3.3.6熱重分析儀(Thermogravimetric Analysis, TGA) 29 3.3.7場發射掃描式電子顯微鏡(Scanning Electron Microscope, SEM) 30 3.3.8白金濺鍍機 30 3.3.9 冷凍乾燥機 30 3.3.10穿透式廣角X光散射(Wide Angle X-ray Scattering, WAXS) 31 3.3.11 核磁共振光譜儀(Nuclear Magnetic Resonance, NMR) 31 第四章 實驗結果與討論 32 4.1 VAE乳液基本性質 32 4.1.1 VAE乳液 32 4.1.2 VAE乳液固含量 34 4.1.3 VAE乳液顆粒大小與分布 36 4.1.3.1粒徑分析結果 36 4.1.3.2電子顯微鏡(SEM)分析 39 4.1.4 VAE乳液流變行為 41 4.1.4.1固含量對流變行為的影響 41 4.1.4.2粒徑大小與分布對流變行為的影響 42 4.2 VAE乳液組成與性質分析 44 4.2.1 VAE乳液元素分析 44 4.2.2 VAE乳液熱性質分析 46 4.2.3探究VAE乳液玻璃轉移溫度與組成關係 49 4.2.3.1 VAEtot-2h玻璃轉移溫度與組成關係 49 4.2.3.2 VAEtot玻璃轉移溫度與組成關係 50 4.2.3.3 VAEsol玻璃轉移溫度與組成關係 53 4.2.3.4 VAEgel玻璃轉移溫度與組成關係 55 4.2.3.5 VAE玻璃轉移溫度與組成關係 57 4.2.4 探究Tg,2玻璃轉移溫度成因 58 4.2.4.1 緩慢降溫程序量測VAEsol玻璃轉移溫度 59 4.2.4.2 等溫結晶程序量測VAEsol玻璃轉移溫度 61 4.2.5探究玻璃轉移溫度與分離的VAEsol關係 64 4.2.5.1 VAEsol,S、VAEsol,M、VAEsol,L玻璃轉移溫度Tg,2 64 4.2.5.2 VAEsol,S、VAEsol,M、VAEsol,L玻璃轉移溫度Tg,1 67 4.3 VAE乳液組成結構與反應機制探討 70 4.3.1穿透式廣角X光散射(WAXS)分析VAE結構 70 4.3.2穿透式廣角X光散射(WAXS)分析不同分離尺寸的VAEsol結構 76 4.3.3 VAE樣品1H-NMR檢測與分支路徑 83 4.3.3.1 VAEtot樣品的1H-NMR光譜 84 4.3.3.2 VAEsol樣品的1H-NMR光譜 86 4.3.4 VAE樣品分支結構分析 88 4.3.4.1 VAEtot樣品的分支指數與路徑推測 91 4.3.4.2 VAEsol樣品的分支指數與路徑推測 93 4.3.5 VAE樣品反應機制 95 4.3.5.1 VAE反應機制與結構組成對玻璃轉移溫度的探討 96 第五章 結論 99 參考文獻 100 | |
dc.language.iso | zh-TW | |
dc.title | VAE乳液結構性質分析 | zh_TW |
dc.title | Study on Structure and Properties for Vinyl Acetate-Ethylene Copolymer from Emulsion Polymerization | en |
dc.type | Thesis | |
dc.date.schoolyear | 106-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 邱文英,廖文彬,鄭如忠 | |
dc.subject.keyword | 醋酸乙烯酯-乙烯共聚物乳液,乳化聚合,玻璃轉移溫度,組成結構, | zh_TW |
dc.subject.keyword | vinyl acetate ethylene (VAE) emulsions,emulsion polymerization,glass transition temperature,composition,structure, | en |
dc.relation.page | 104 | |
dc.identifier.doi | 10.6342/NTU201802782 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2018-08-09 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 高分子科學與工程學研究所 | zh_TW |
dc.date.embargo-lift | 2023-08-10 | - |
顯示於系所單位: | 高分子科學與工程學研究所 |
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