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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 賴喜美(Hsi-Mei Lai) | |
dc.contributor.author | Wei-Feng Hung | en |
dc.contributor.author | 洪偉峰 | zh_TW |
dc.date.accessioned | 2021-06-17T00:29:38Z | - |
dc.date.available | 2017-03-19 | |
dc.date.copyright | 2012-03-19 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-02-13 | |
dc.identifier.citation | 張馨云。2007。酸水解法製備多醣奈米結晶粒子之研究。國立台灣大學生物資源暨農學院農業化學系碩士論文。
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/66307 | - |
dc.description.abstract | 澱粉為價格便宜、產量穩定、且具備類似塑膠高分子加工特性之大宗穀物原料,適合作為環保性材料之來源。在乾燥環境下,澱粉材料具有良好之氣體阻隔性及機械強度,但是親水性的澱粉分子結構卻使得材料性質容易受到環境相對濕度的影響而不穩定,且使其功能性較低,故局限澱粉材料的應用性。本論文利用奈米塗佈技術進行澱粉膜之表面改質,其原理為利用帶正電荷之澱粉分子鏈段與帶負電荷之界面活性劑具有相互吸附之特性,可藉由旋轉塗佈法(spin-coating)於澱粉膜表面逐層自組裝排列(layer-by-layer self assembly)形成奈米尺度之多層薄膜結構。研究的第一部分探討正電修飾澱粉之性質及離子強度對正電澱粉結構與吸附之影響。結果顯示,本試驗製備高取代之正電澱粉,並觀察隨著鹽類添加提高環境之離子強度,其粒徑會縮小並可提升其於基質表面之吸附量。第二部分利用正電澱粉與帶負電乳酸硬脂酸鈉進行逐層自組裝,探討其組裝之薄膜微結構。以低略角小角度X光散射與X光反射技術分析正電澱粉/乳酸硬脂酸鈉自組裝結構,可證實其組裝成規整的多層層狀結構,於高離子強度環境下,層狀結構之週期為均一之4 nm。進一步實際應用此多層薄膜系統改質澱粉膜,確實可在不影響澱粉膜結構下有效改善澱粉基質的表面親水性。於高離子強度環境下,產生規整層狀結構與緻密的表面,可使表面接觸角達65度,且可將水氣通透速率降為對照組的13.3%。第三部分則將負電界面活性劑、柑橘精油與水進行微乳化系統的分析,並使用微乳化系統攜帶脂溶性抗氧化劑α-tocopherol成分,並於澱粉基質表面與正電澱粉自組裝,使澱粉膜具有抗氧化活性。先以水/二辛基硫化琥珀酸鈉/柑橘精油可得到良好分散的水包油微乳化系統,並混摻α-tocopherol於此乳化系統中,再與正電澱粉自組裝於澱粉膜表面,試驗證實,此技術可使澱粉膜具有抗氧化性質。本試驗成功擴展澱粉基質材料之功能性,使澱粉膜同時有疏水與抗氧化性質,具有開發成為生物可分解活性包材之潛力。 | zh_TW |
dc.description.abstract | Starch is considered as one of the most promising biomaterials because it is abundant and relatively inexpensive, and possesses ability. However, the materials are sensitive to moisture, and their structures and properties are easily changed with surrounding humidity, which results in their limitions on the processing and applications. Thus, the aim of this study was using nanocoating technique of layer by layer (LbL) self-assembly multilayer with materials having the opposite charges to facilitate the functionalities of starch films. The experiments used the adsorptive property of the cationic starch (CS) and the negative amphiphilic molecules, (sodium stearoyl lactylate, SSL), to process LbL self-assemblied multilayers by spin coating. In the first part of this study, a high substituted cationic starch (degree of substitution = 0.72) was modified from Hylon VII corn starch. The particle sizes of cationic starch decreased with increasing in the ionic strength, but the amount of adsorption increased with increasing in the ionic strength. Secondly, the microstructure of CS/SSL self-assembly thin film was analyzed. According to the GISAXS and XRR patterns, the ordered lamellar structures were found in CS/SSL multilayered thin film. At the high ionic strength condition, the period of the ordered lamellar structure would be 4 nm. When the CS/SSL multilayered thin film was spin-coated on the surface of starch film, the hydrophilicity of native starch film decreased significantly. At the high ionic strength condition, the contact angle of CS/SSL multilayered starch film increased to 65 degrees, and water vapor permeability with 86.7% decrease. Furthermore, a negative amphiphilic molecules, sodium bis(2-ethylhexyl)sulfosuccinate (AOT), orange essential oil and water were used to produce o/w microemulsion (ME) system. In addition, α-tocopherol was introduced as the antioxidant to the ME system (MEE). The results shown that the CS/MEE spin-coated starch film could release antioxidant to scavenge the free radicals significantly. In this study, the starch matrix could be developed as a kind of biodegradable active packaging materials with moisture-resistant and antioxidation property. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T00:29:38Z (GMT). No. of bitstreams: 1 ntu-101-R98623009-1.pdf: 4238010 bytes, checksum: 194d1bef211c3eaa66c7a8abf0f5e60e (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | 中文摘要 -------------------------------- I
英文摘要 -------------------------------- II 目錄 ------------------------------------ III 表目錄 ---------------------------------- VI 圖目錄 ---------------------------------- VII 第一章、前言 ---------------------------- 1 實驗架構示意圖--------------------------- 2 第二章、文獻整理 ------------------------ 3 一、生物可分解高分子 -------------------- 3 (一)澱粉 ------------------------------ 5 (二)正電修飾澱粉----------------------- 7 二、奈米塗佈技術製備逐層自組裝多層膜----- 9 三、生物材料應用於食品活性包材----------- 11 (一)生物材料之疏水性改質--------------- 12 (二)生物性抗氧化活性包材--------------- 14 第三章、材料與方法 ---------------------- 16 一、材料 -------------------------------- 16 二、方法 -------------------------------- 16 (一)正電澱粉之製備--------------------- 16 (二)天然玉米澱粉膜基質之製備----------- 18 (三)CS/SSL多層薄膜之製備--------------- 18 (四)微乳化系統之製備------------------- 21 (五)微乳化系統混添抗氧化成分製備------- 21 (六)CS/MEE塗佈澱粉膜之製備------------- 21 三、正電澱粉之性質檢測------------------- 22 (一)正電澱粉之理化性質----------------- 22 (二)粒徑分佈測定 ---------------------- 23 (三)原子力顯微鏡觀察------------------- 23 四、CS/SSL多層膜之性質檢測--------------- 24 (一)聚焦離子束掃描式電子顯微鏡觀察----- 24 (二)低掠角小角度X-ray散射-------------- 24 (三)小角度X-ray散射測定---------------- 24 (四)X-ray 反射儀----------------------- 25 五、CS/SSL塗佈澱粉膜之疏水性質檢測------- 25 (一)塗佈澱粉膜之顯微結構--------------- 25 (二)接觸角測定------------------------- 25 (三)水汽通透性測定--------------------- 26 六、水/乳化劑/柑橘精油微乳化系統之性質檢- 26 (一)擬三相圖分析----------------------- 26 (二)小角度X光散射測定------------------ 27 七、含抗氧化物質之澱粉膜之DPPH自由基清除力測定----------------------------------------- 27 八、統計分析 ---------------------------- 27 第四章、結果與討論 ---------------------- 28 一、正電澱粉之性質 ---------------------- 28 (一)正電取代度與分子量分佈------------- 28 (二)濃度與離子強度對正電澱粉分子的影響- 31 二、正電澱粉/乳酸硬脂酸鈉多層膜之結構與性質----------------------------------------- 37 (一)CS/SSL多層自組裝結構之顯微結構與厚度 ----------------------------------------- 37 (二)CS/SSL多層自組裝結構之低略角小角度X-ray散射圖譜 ----------------------------------------- 40 (三)CS/SSL多層薄膜之X-ray反射(XRR)圖譜- 46 三、正電澱粉/乳酸硬脂酸鈉塗佈澱粉膜之結構與疏水性質----------------------------------------- 47 (一)CS/SSL塗佈澱粉膜之外觀與顯微結構 -- 47 (二)CS/SSL塗佈澱粉膜之表面濕潤性 ------ 51 (三)CS/SSL塗佈澱粉膜之水汽通透性 ------ 57 四、水/二辛基硫化琥珀酸鈉/柑橘精油微乳化系統之性質檢測----------------------------------------- 60 (一)乳化系統之擬三相圖----------------- 60 (二)微乳化系統之小角度X-ray散射圖譜---- 60 五、正電澱粉/含抗氧化劑微乳化系統塗佈澱粉膜之結構與性質----------------------------------------- 63 (一)CS/MEE塗佈澱粉膜之外觀與顯微結構--- 63 (二)CS/MEE塗佈澱粉膜之DPPH清除能力----- 66 第五章、結論 ---------------------------- 67 第六章、參考文獻 ------------------------ 69 附錄、縮寫表 ---------------------------- 79 | |
dc.language.iso | zh-TW | |
dc.title | 以逐層自組裝多層膜奈米塗佈技術 開發含活性物質之高功能性澱粉膜 | zh_TW |
dc.title | Developing the high functional and active compounds contained starch film by layer-by-layer self-assembly nanocoating method | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 李文?,張永和,童世煌,賴麗旭 | |
dc.subject.keyword | 正電澱粉,乳酸硬脂酸鈉,逐層自組裝多層膜,層狀結構,澱粉膜疏水性改質,微乳化系統,α-tocopherol,抗氧化活性澱粉膜,生物可分解活性包材, | zh_TW |
dc.subject.keyword | cationic starch,sodium stearoyl lactylate (SSL),layer by layer (LbL) self-assembly,ordered lamellar structure,hydrophobic starch film,antioxidative starch film,biodegradable,active packaging, | en |
dc.relation.page | 80 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-02-13 | |
dc.contributor.author-college | 生物資源暨農學院 | zh_TW |
dc.contributor.author-dept | 農業化學研究所 | zh_TW |
顯示於系所單位: | 農業化學系 |
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