期刊論文
| 學年 | 99 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2011-01-01 |
| 作品名稱 | Thermal Behavior and Crystal Structure of Poly(l-lactic acid) with 1,3:2,4-Dibenzylidene-d-sorbitol |
| 作品名稱（其他語言） | |
| 著者 | Lai, Wei-Chi |
| 單位 | 淡江大學化學工程與材料工程學系 |
| 出版者 | Washington: American Chemical Society |
| 著錄名稱、卷期、頁數 | The Journal of Physical Chemistry B 115(38), pp.11029–11037 |
| 摘要 | This study investigated the effect of 1,3:2,4-dibenzylidene-d-sorbitol (DBS) on the thermal behavior and crystal structure of poly(l-lactic acid) (PLLA) by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). Different PLLA crystal structures (α- or α′-form crystal) were found by the change of the DBS amount and PLLA crystallization temperature. The order and regular α-form of PLLA was favored as the DBS component was added. The α-form crystal formed more at lower temperatures. Therefore, the disorder-to-order (α′-to-α) phase-transition temperature of PLLA was found to shift at lower temperatures as more DBS content was added. In the proposed structure of PLLA with DBS, the DBS molecules are stacked together through π–π interaction to form a strand with the PLLA molecules by hydrogen bonding. Because of these interactions, PLLA could have a more regular structure with the addition of DBS. In addition, the equilibrium melting point and glass-transition temperature of PLLA were not significantly changed with the addition of DBS. However, the addition of DBS changed the crystal structure of PLLA and thus affected the crystallization rate of PLLA. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1520-6106; 1520-5207 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | Lai, Wei-Chi |
| 審稿制度 | |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/73555 ) |