一年生植物纤维素及其在生产四氟乙烯端基全氟聚醚疏水产品中的应用。
Cellulose from Annual Plants and Its Use for the Production of the Films Hydrophobized with Tetrafluoroethylene Telomers.
机构信息
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia.
Chernogolovka Scientific Center, Russian Academy of Sciences, Chernogolovka 142432, Russia.
出版信息
Molecules. 2022 Sep 15;27(18):6002. doi: 10.3390/molecules27186002.
Cellulose was produced by the modified traditional method with 35% yield from the stem of Sosnovsky hogweed and was characterized by elemental analysis, infrared (IR) spectroscopy, powder X-ray diffractometry, differential scanning calorimetry (DSC) and X-ray photoelectron spectroscopy (XPS). For , the degree of crystallinity (approximately 70%) and the glass transition temperature (105-108 °C) were determined. It was found that the whiteness characteristic in the case of was 92% and this significate was obtained without a bleaching procedure using chlorine-containing reagents. In this paper, the possibility of hydrophobization of films by treatment with radiation-synthesized telomers of tetrafluoroethylene is shown. It was found that the contact angle of the telomer-treated cellulose film surface depended on the properties of the telomers (the chemical nature of the solvent, and the initial concentration of tetrafluoroethylene) and could reach 140 degrees.
纤维素是用改良的传统方法从猪毛蒿茎中提取的，产率为 35%，并用元素分析、红外（IR）光谱、粉末 X 射线衍射、差示扫描量热法（DSC）和 X 射线光电子能谱（XPS）进行了表征。对于纤维素，确定了其结晶度（约 70%）和玻璃化转变温度（105-108°C）。结果发现，在没有使用含氯试剂进行漂白处理的情况下，纤维素的白度特性达到了 92%。本文展示了用辐射合成的四氟乙烯齐聚物对纤维素薄膜进行疏水化处理的可能性。结果发现，齐聚物处理过的纤维素薄膜表面的接触角取决于齐聚物的性质（溶剂的化学性质和四氟乙烯的初始浓度），可以达到 140 度。
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