文化大學機構典藏 CCUR:Item 987654321/48884
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    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/48884


    题名: 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)
    贡献者: 紡工系
    关键词: degradation
    polyurethane
    thermal properties
    日期: 2020-09-20
    上传时间: 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
    显示于类别:[紡織工程學系] 期刊論文

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