生物分解性共聚酯與丹寧酸摻合系統之化學交換反應研究 = Chemical...
吳秉霖

 

  • 生物分解性共聚酯與丹寧酸摻合系統之化學交換反應研究 = Chemical Interaction in Blends of Biodegradable Copolyester and Tannic Acid
  • 紀錄類型: 書目-語言資料,印刷品 : 單行本
    並列題名: Chemical Interaction in Blends of Biodegradable Copolyester and Tannic Acid
    作者: 吳秉霖,
    其他團體作者: 國立高雄大學
    出版地: [高雄市]
    出版者: 撰者;
    出版年: 2015[民104]
    面頁冊數: 178面圖,表 : 30公分;
    標題: 生物可分解性共聚酯
    標題: biodegradable copolymer
    電子資源: http://handle.ncl.edu.tw/11296/ndltd/13397653110018169504
    附註: 104年10月31日公開
    附註: 參考書目:面158-164
    摘要註: 生物可分解性共聚酯Poly(butylenes adipate-co-butylene terephthalate)(P(BA-co-44mol%BT),Ecoflex)與單寧酸(Tannic Acid)摻合系統之熱行為、化學交換反應、結晶特性以微分掃描熱卡計(DSC)、傅立葉紅外線光譜儀(FT-IR)、熱重分析儀(TGA)、偏光顯微鏡(POM)來研究。由熱行為分析之結果,Ecoflex/TA摻合系統為一相容系統,以Gorden-Taylor equation計算k=3,Flory-Huggins equcation計算Ecoflex/TA 摻合系統之分子作用力參數 =-0.053(Ecoflex結晶熔融峰為基準)。耐熱性分析中TA及Ecoflex/TA=5/5於212℃呈現熱分解趨勢,此溫度會影響熱處理之結果。Ecoflex/TA摻合系統於210℃及195℃熱處理,發現碳氧雙鍵官能基下降、氫氧官能基位移之情況,以結構及熱分解反應分析得知Ecoflex/TA摻合系統存在一特殊之酸解交換反應。Ecoflex/TA之球晶型態呈現馬爾它十字(Maltes-cross),當TA摻合比例增加及恆溫結晶溫度上升,球晶大小及成長速率會受晶板成長影響而減少;改變降溫速率會影響球晶成長速率,但不會嚴重影響球晶成長大小之差異。Ecoflex/TA摻合系統於210℃及195℃熱處理,TA因化學交換反應而減少,球晶型態因反應產生之新鏈段而改變,球晶成長速率因熱處理而減緩;熱處理後改變降溫速率會影響球晶成長速率,但不會嚴重影響球晶成長大小之差異。結果可由Avrami equation作圖獲得之速率常數k及結晶半生期t1/2論證。 Miscibility and tranesterification of the Poly(butylene adipate-co-butylene terephthalate)/Tannic acid (P(BA-co-44mol%BT)/TA) blends were investigated through differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer (TGA) and polarized optical microscopy (POM). The result of thermal analysis revealed that the Ecoflex/TA blends were miscible. Through the analysis of Gorden-Taylor equation shows that the parameter k=3 and the interaction parameter X12=-0.053 through Flory-Huggins equation. Ecoflex/TA blends heated at 210℃ and 195℃, and on the basic of FT-IR analysis, we found the absorbance of carbonate group decreased and absorbance of hydroxyl group shifted left. By analyzing the structure and functional group, the chemical interaction was found between Ecoflex and TA. Characterization of Ecoflex spherulites using polarized optical microscopy, the spherulite structure with a Maltese cross has been observed in the blends. After thermal annealing, the spherulite size and the rate of crystallization of Ecoflex were apparently affected in the Ecoflex/TA blends. The spherulite size increased with increasing the crystallization temperatures and content of TA. The result was concluded that the quantity of TA would interfere the crystallization of Ecoflex.
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310002564972 博碩士論文區(二樓) 不外借資料 學位論文 TH 008M/0019 541208 2621 2015 一般使用(Normal) 在架 0
310002564980 博碩士論文區(二樓) 不外借資料 學位論文 TH 008M/0019 541208 2621 2015 c.2 一般使用(Normal) 在架 0
  • 2 筆 • 頁數 1 •
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