ABSTRACT

The present study facilely prepared the hydrophobic and flame-retardant (FR) multifunctional coating on silk textile through ferric ion chelation route, and focused on multifunctional abilities and mechanisms of ferric salt on silk. Morphology and structure properties of the modified silk were characterised by scanning electron microscope, atomic force microscopy and X-ray diffraction analyses. The functional abilities, mechanisms and durability were also studied. The multifunctional silk with self-extinguishing ability (char length: 10.1 cm) and hydrophobic effect (water contact angle (WCA): 126.1°) could be obtained using only 0.25 g L⁻¹ ferric salt. The modified silk still had desirable functionalities after five robust launderings. The hydrophobic ability is mainly dependent on the increased surface roughness. Thermal stability and char residue analyses indicated the condensed phase FR mechanism of functional silk. The present study provides a cleaner and cost-effective process to develop hydrophobic and FR multifunctional coating on silk surface by ferric metal salt modification.

摘要

本研究通过铁离子螯合途径在蚕丝织物上轻松制备了疏水阻燃（FR）多功能涂层，重点研究了铁盐在蚕丝上的多功能能力和机理。通过扫描电子显微镜、原子力显微镜和 X 射线衍射分析表征了改性丝绸的形态和结构特性。还研究了功能能力、机制和耐久性。仅使用0.25 g L ^-1即可获得具有自熄能力（炭长：10.1 cm）和疏水作用（水接触角（WCA）：126.1°）的多功能丝铁盐。经过五次强力洗涤后，改性丝绸仍然具有理想的功能。疏水能力主要取决于增加的表面粗糙度。热稳定性和炭残留分析表明功能丝的凝聚相 FR 机制。本研究提供了一种更清洁且具有成本效益的工艺，通过铁金属盐改性在丝绸表面开发疏水性和阻燃性多功能涂层。