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首页> 外文期刊>Current Journal of Applied Science and Technology >Vinyltrimethoxy Silane and Aminopropyl Triethoxysilane: Excellent Silane Coupling Agents for Cotton Fiber Functionalization
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Vinyltrimethoxy Silane and Aminopropyl Triethoxysilane: Excellent Silane Coupling Agents for Cotton Fiber Functionalization

机译：乙烯基三甲氧基硅烷和氨基丙基三乙氧基硅烷：棉纤维功能化的优异硅烷偶联剂

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摘要

Vinyltrimethoxy silane and aminopropyl triethoxysilane were used for surface functionalization to enhance the textile performance of cotton. The process was carried out in an ethanol-water medium, which accelerated the cross-linking reaction between fiber and silane monomers. The process was optimized carefully as a function of fiber weight gain. The optimized modification conditions were silane monomer concentration 600 and 300% (on weight of fiber), ethanol-water ratio 60:40 and 80:20, pH 3.5 and 5, reaction time 90 and 60 min at room temperature (30°C), for VTMS and APTES, respectively. The silane-modified cotton fiber showed improved tensile strength, water repellency, thermal stability and wrinkle recovery. These improvements are due to flexibility of the Si-O bond and the fiber matrix interfacial strength properties. Instrumental analyses, such as FTIR, TGA, DTG, SEM and EDX, were carried out successfully. FTIR was used to identify the Si-O-Si group of VTMS and the Si-O-CH3 of APTES on modified cotton fibers, and TGA and DTG were used to evaluate the modification's effect on the thermal stability of the fiber. SEM was used to study the surface morphology after modification and EDX was used to measure the quantity of elemental silicon atoms on the fiber backbone. Finally, unmodified and silane-modified cotton fibers were dyed with two reactive dyes and the modified cotton fiber showed better ability to accept dye than that of the unmodified fiber.
机译：乙烯基三甲氧基硅烷和氨基丙基三乙氧基硅烷用于表面官能化，以增强棉的纺织性能。该过程在乙醇-水介质中进行，这加速了纤维和硅烷单体之间的交联反应。根据纤维重量的增加，对工艺进行了优化。优化的改性条件是硅烷单体浓度为600和300％（以纤维重量计），乙醇与水的比例为60:40和80：20，pH为3.5和5，在室温（30°C）下反应时间为90和60分钟分别用于VTMS和APTES。硅烷改性的棉纤维显示出改进的拉伸强度，疏水性，热稳定性和皱纹恢复性。这些改进归因于Si-O键的柔韧性和纤维基质的界面强度特性。成功进行了FTIR，TGA，DTG，SEM和EDX等仪器分析。 FTIR用于鉴定改性棉纤维上VTMS的Si-O-Si基团和APTES的Si-O-CH3基团，TGA和DTG用于评估改性对纤维热稳定性的影响。 SEM用于研究改性后的表面形态，EDX用于测量纤维骨架上元素硅原子的数量。最后，用两种活性染料将未改性的和硅烷改性的棉纤维染色，并且改性的棉纤维显示出比未改性的纤维更好的接受染料的能力。

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