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| 題名: | Synthesis and properties of castor oil-based polyurethane containing short fluorinated segment |
| 作者: | Li, JW (Li, Jia-Wun)
Cheng, YH (Cheng, Yung-Hsin)
Lee, HT (Lee, Hsun-Tsing)
Wang, CC (Wang, Chyung-Chyung)
Chiu, CW (Chiu, Chih-Wei)
Suen, MC (Suen, Maw-Cherng) |
| 貢獻者: | 紡工系 |
| 關鍵詞: | degradation
polyurethane
thermal properties |
| 日期: | 2020-09-20 |
| 上傳時間: | 2020-12-11 13:29:06 (UTC+8) |
| 摘要: | This study successfully incorporated a short-segment fluorine-containing chain extender (2,2,3,3-tetrafluoro-1,4-butanediol [TF]) into castor oil-based polyurethane (COPU) to synthesize TF/COPUs. The interactions between TF and COPU components were identified by Fourier transform infrared and X-ray photoelectron spectroscopies, the results revealed that the increase in the TF content increased the van der Waals forces in C-F horizontal ellipsis C(sic)O and the hydrogen bonding force in C-F horizontal ellipsis H-N. Atomic force microscopy indicated that the addition of more TF contributed to a higher level of microphase separation in the TF/COPUs. Thermogravimetric analysis showed that the TF component can enhance the thermal resistance of TF/COPUs. Differential scanning calorimetry and dynamic mechanical analysis indicated that the glass transition temperature (T-g) of TF/COPUs increased with the TF content. The stress-strain testing showed that the tensile strength and elongation at break values decreased with the TF content. This tensile behavior may be due to the molecular weight of a TF/COPU decreased with the TF content as evidenced by the gel permeation chromatography results. The hydrolytic degradation tests of dipping TF/COPUs in 3 wt% NaOH solution indicated that TF could lower the surface free energy and enhance the degradation stability of TF/COPUs. |
| 關聯: | JOURNAL OF APPLIED POLYMER SCIENCE 卷冊: 137 期: 36 文獻號碼: e49062 |
| 顯示於類別: | [紡織工程學系] 期刊論文
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