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经APTES修改的CNC片的特性

Sadat Kamal Amit¹, Diego Gomez-Maldonado², Tiana Bish¹

¹Department of Chemical Engineering, Auburn University, 212 Ross Hall, Auburn, Alabama 36849, United States.

|April 15, 2024

概括

用3-aminopropyl-triethoxysilane (APTES) 修改纤维素纳米晶体 (CNC) 可以提高它们在水中的稳定性. 这种改进允许在水基环境中更广泛的应用,包括传感和吸附技术.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
聚合物化学聚合物化学

背景情况:

纤维素纳米晶 (CNCs) 为水基材料生产提供了容易的水性分散性.
然而,它们固有的水溶性限制了需要浸泡水的应用.

研究的目的:

为了提高硫酸CNC的水解稳定性.
探索APTES修改的潜力,以提高水性环境中的CNC性能.

主要方法:

通过单反应,使用3-aminopropyl-triethoxysilane (APTES) 来修改CNC.
使用光谱 (ATR-FTIR),显微镜 (AFM,光学),热分析 (TGA) 和动态光散射进行表征.
对数控片的水解稳定性和机械性能进行评估.
使用石英晶体微平衡与散射监测 (QCMD) 和多参数表面等离子体共振 (MP-SPR) 来评估结合亲和力.

主要成果:

通过APTES的修改,CNC薄膜的水解稳定性得到了显著的改善.
尽管只替换了12.6%的基团,但观察到对机械性能的轻微影响.
证明了与农药卡博的强化不可逆转的结合.
经过APTES修改的CNC在浸水应用中显示出更大的实用性.

结论:

修改APTES是一种有效的策略,可以提高硫酸CNC的水解稳定性.
这一修改扩大了CNC在水基系统中的适用性.
改进的CNC显示出有望用于传感器和吸附剂的污染物去除.

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