Abstract In this work, surface modification is employed to improve the functionality of bundle-type polyamide fiber nonwoven (PAFN) by a simple method. Firstly, PAFN was treated with formaldehyde to get hydroxylated PAFN (PAFN-OH) with N-hydroxymethyl structure, and then PAFN-OH was modified by using (3-aminopropyl) trimethoxysilane (APS) to prepare silanized PAFN (PAFN-NH2). Secondly, ester-functionalized PAFN (PAFN-COO) was prepared by Michael 1,4 conjugate addition of PAFN-NH2 and dipentaerythritol pentaacrylate (5Acl). Finally, PAFN-COO was modified with collagen to evaluate the hydrophilicity of the functionalized PAFN (PAFN-g). The scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) spectra provided evidence for the modification from PAFN to PAFN-g. Moreover, the atomic force microscopy (AFM) shows the change in surface roughness of PAFN and modified PAFN. The water vapor transmission rate was increased 137.4% and the water contact angles decreased from 124.2° to 68.3° by comparing PAFN with PAFN-g. This indicated that the hydrophilicity of PAFN modified by collagen was improved significantly.

中文翻译：

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胶原蛋白束型聚酰胺纤维非织造布表面改性提高亲水性

摘要 在这项工作中，表面改性通过一种简单的方法来提高束型聚酰胺纤维非织造布 (PAFN) 的功能。首先将PAFN用甲醛处理得到具有N-羟甲基结构的羟基化PAFN(PAFN-OH)，然后用(3-氨基丙基)三甲氧基硅烷(APS)对PAFN-OH进行改性制备硅烷化PAFN(PAFN-NH2)。其次，通过PAFN-NH2和二季戊四醇五丙烯酸酯（5Acl）的Michael 1,4共轭加成制备酯官能化PAFN（PAFN-COO）。最后，用胶原蛋白修饰 PAFN-COO 以评估功能化 PAFN (PAFN-g) 的亲水性。扫描电子显微镜 (SEM) 和 X 射线光电子能谱 (XPS) 光谱为从 PAFN 改性为 PAFN-g 提供了证据。而且，原子力显微镜 (AFM) 显示了 PAFN 和改性 PAFN 表面粗糙度的变化。通过比较PAFN和PAFN-g，水蒸气透过率提高了137.4%，水接触角从124.2°降低到68.3°。这表明胶原修饰的PAFN的亲水性得到显着提高。