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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 | Chung-Chien Hsu | en |
dc.contributor.author | 許仲儉 | zh_TW |
dc.date.accessioned | 2021-05-14T17:42:09Z | - |
dc.date.available | 2015-08-20 | |
dc.date.available | 2021-05-14T17:42:09Z | - |
dc.date.copyright | 2015-08-20 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-08-19 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/4419 | - |
dc.description.abstract | 在本研究中探討了由聚4-乙烯基吡啶(Poly(4-vinylpyridine), P4VP)與3,5-雙(十六烷氧基)苯甲酸(3,5-Bis(hexadecyloxyl)benzoic acid, BHBA)經由氫鍵結合而成的超分子複合體。藉由傅立葉轉換紅外光譜觀察了在超分子複合體中的P4VP與BHBA,或著自由BHBA二聚體間的氫鍵接合情形。另外也利用了小角度X光繞射(Small angle X-ray scattering, SAXS)與廣角度X光繞射(Wide angle X-ray scattering, WAXS) 來了解超分子複合體和過剩的BHBA分子的結構型態,以及藉由示差掃描熱分析儀(Differential scanning calorimetry, DSC)與變溫SAXS觀察其熱性質與隨溫度的形態變化。由於其本身的雙尾分子結構,純的BHBA在退火及淬火後,分別產生了特殊的結晶結構以及層狀結構,並也在之後的P4VP(BHBA)x複合體中出現。另外意外地發現儘管超分子複合體有生成,在SAXS的散射中並未觀察到有生成任何規整結構,經推測原因應是BHBA的尾部結構的立體障礙對於形成層狀結構而言過大,而對於六角堆積柱狀結構則又過小。隨著BHBA的增加,在經過一飽和的平緩區後,在FTIR中亦可觀察到側鏈的脫落,而且因側鏈脫落造成的P4VP蜷曲也可由SAXS確定。在P4VP(BHBA)x,且x是BHBA對4VP重複單元的比例的情況下,在x = 0.8時觀察到有特殊的現象。在x = 0.8時,BHBA應已有剩餘,但卻未能形成羧酸二聚體,而且超分子複合體的排列特別地不規整。這些結果被解釋為因為剩餘的BHBA量不足以形成聚集,並穿插在超分子複合體的BHBA部分,進而干擾了BHBA層間的交互穿插。對於雙尾的側鏈分子而言,這是一個不同於其他單尾或三尾的側鏈分子的獨有的特徵。 | zh_TW |
dc.description.abstract | In this study, the supramolecular complex of 3,5-bis(hexadecyloxyl)benzoic acid (BHBA) and Poly(4-vinylpyridine) (P4VP) via hydrogen bonding is investigated. FTIR was utilized for observing the hydrogen bonding between P4VP and BHBA or in free BHBA dimers. SAXS and WAXS was applied for studying the morphology of supramolecular complex and excess BHBA molecules, and the thermal property and morphology evolution with temperature is studied by DSC and in situ SAXS and WAXS. Due to its two-tailed molecular structure, pristine BHBA forms unique crystalline structure after annealed and lamellar structure after quenched, which both found in P4VP(BHBA)x complexes. Surprisingly, though with formation of supramolecular complex, no ordered structure is found in SAXS profile. The reason is considered as that the steric hindrance of tails of BHBA is too large for lamellar structure, and too weak for hexagonally-packing cylindrical structure. With addition of BHBA, detachment of side chains due to crystallizing competition is observed by FTIR after a saturating plateau and coiling of P4VP due to detachment is also confirmed by SAXS. For P4VP(BHBA)x, where x is the molar ratio of BHBA to 4VP repeating unit, it is found the x = 0.8 is unique point where BHBA is shown excess but does not form carboxylic acid dimer, and the alignment of supramolecular complex is especially less ordered. This is possibly because the amount of excess BHBA is too little for self-aggregating and they insert in BHBA domain in supramolecular complex, thus interfering with the interdigitating between BHBA domains. This is the distinct characteristic of supramolecular complex with two-tailed side chain molecule different from the complexes with single or three-tailed ones. | en |
dc.description.provenance | Made available in DSpace on 2021-05-14T17:42:09Z (GMT). No. of bitstreams: 1 ntu-104-R02549006-1.pdf: 1096015 bytes, checksum: 5243159306e05c0c1013b1f46a5fe592 (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | 誌謝 i
中文摘要 ii ABSTRACT iii CONTENTS iv LIST OF FIGURES v Chapter 1 Introduction 1 Chapter 2 Literature Reviews 3 2.1 Hydrogen-Bonded Comb-like Supramolecules 3 Chapter 3 Experimental Section 7 3.1 Materials 7 3.1.1 Sample Preparation 7 3.2 Instruments 8 3.2.1 Fourier Transform Infrared Spectroscopy (FTIR) 8 3.2.2 Differential Scanning Calorimeter (DSC) 8 3.2.3 Small-Angle X-ray Scattering (SAXS) and Wide-Angle X-ray Scattering (WAXS) 8 Chapter 4 Results and Discussion 10 4.1 Hydrogen Bonding Complex 10 4.2 Structure Analysis of P4VP(BHBA)x 13 4.3 Thermal Behavior of P4VP(BHBA)x 16 Chapter 5 Conclusion 29 REFERENCE 30 | |
dc.language.iso | en | |
dc.title | "聚4-乙烯基吡啶與3,5-雙(十六烷氧基)苯甲酸形成之超分子的相分離行為與結構分析" | zh_TW |
dc.title | Phase Behaviors and Structure of Supramolecules Formed by Poly(4-vinylpyridine) and 3,5-Bis(hexadecyloxyl)benzoic Acid | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 廖文彬,黃慶怡 | |
dc.subject.keyword | 氫鍵,超分子,雙尾介面活性劑, | zh_TW |
dc.subject.keyword | hydrogen bonding,supramolecules,two-tailed surfactant, | en |
dc.relation.page | 31 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2015-08-19 | |
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 |
顯示於系所單位: | 高分子科學與工程學研究所 |
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