A series of polyethylene glycol‐linked Gemini fatty alcohol phosphate surfactants (GFAP) were prepared with long chain n‐alkanol (C = 8, 12, 16, 18), polyethylene glycol (PEG‐200, PEG‐400, PEG‐600, PEG‐800, PEG‐1000) and phosphorus oxychloride (POCl₃). The structure of the prepared surfactants was characterized by Fourier transform infrared spectrometer (FT‐IR). The surfactants were employed for the modification of chrome‐tanned leather. The morphological changes of chrome‐tanned leather and modified chrome‐tanned leather were observed by scanning electron microscopy (SEM). The relationship between the alkyl chain length and molecular weight of the PEG and the hydrophobicity, softness, mechanical strength of modified chrome‐tanned leather was also discussed. The experimental results showed that the mechanical strength and softness of modified chrome‐tanned leather were enhanced with an increase of alkyl chain length, while the hydrophobicity, mechanical strength and softness were decreased with an increase of molecular weight of the PEG. The hydrophobicity, mechanical strength and softness of modified chrome‐tanned leather were optimized for an alkyl chain length of 16. Therefore, 16–200 Gemini phosphate surfactants with an alkyl chain length of 16 and a PEG molecular weight of 200 have a good comprehensive modification effect on Chrome‐tanned leather, the tensile strength, tear strength and softness of modified chrome‐tanned leather are 57.07 N mm⁻², 79.49 N mm⁻¹, 9.73 mm, respectively.

中文翻译：

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聚乙二醇链接的双子座脂肪醇磷酸酯对铬鞣革的改性

制备了一系列由聚乙二醇连接的Gemini脂肪醇磷酸酯表面活性剂（GFAP），长链正链烷醇（C = 8、12、16、18），聚乙二醇（PEG-200，PEG-400，PEG-600， PEG-800，PEG-1000）和三氯氧化磷（POCl ₃）。用傅立叶变换红外光谱仪（FT-IR）对所制备的表面活性剂的结构进行了表征。表面活性剂用于铬鞣革的改性。通过扫描电子显微镜（SEM）观察了铬鞣革和改性铬鞣革的形态变化。还讨论了PEG的烷基链长和分子量与改性铬鞣革皮革的疏水性，柔软性和机械强度之间的关系。实验结果表明，改性的鞣革皮革的机械强度和柔软度随着烷基链长度的增加而增强，而疏水性，机械强度和柔软度则随着PEG分子量的增加而降低。疏水性^-2，79.49Ñ毫米^-1，9.73毫米。