论文标题
纤维素的表面工程作为逐层组装的增强:出色的火焰粘贴和提高的耐用性,并引入了基于生物的“分子胶”
Surface engineering for cellulose as a boosted Layer-by-Layer assembly: excellent flame retardancy and improved durability with introduction of bio-based "molecular glue"
论文作者
论文摘要
逐层(LBL)组件是一种具有吸引力的用途工具,可以解决棉花的易燃性,而LBL涂层的洗涤牢度仍然存在问题。为了解决此问题,LBL层由苯基膦酸(PHA)和3-氨基丙基三乙氧基硅烷(APTES)组成,沉积在聚多巴胺(PDA)涂层上。制备的棉花达到了限制氧指数(LOI)的31.4%,并在去除点火器后立即熄灭。与纯棉相比,热释放速率(PHRR)的峰值约为36%。提出了联合屏障和淬火机制。此外,即使经过50个洗涤剂洗涤周期,也达到了增强的洗涤耐用性(占LOI的24.1%)。从LBL层中提出的PDA丰富的芳香族结构和PHA中的PDA苯环之间提出的π-π堆叠相互作用,首先提出以构建耐用的有效阻燃(FR)棉之间的π-π堆叠相互作用。这项工作试图为耐用的FR棉织物启发更多的思想和设计。
Layer-by-Layer (LbL) assembly was attractive as a versatile tool to address the flammability of cotton, while the washing fastness of LbL coating stayed an issue. Aiming to tackle this issue, LbL layers consisted of phenylphosphonic acid (PHA) and 3-aminopropyltriethoxysilane (APTES) was deposited on polydopamine (PDA)-coated cotton. The prepared cotton reached 31.4% of limiting oxygen index (LOI), and extinguished immediately after removing the ignitor. Peak of heat release rate (pHRR) attenuated around 36 % compared with pure cotton. A combined barrier and quenching mechanisms were proposed. Moreover, enhanced washing durability (24.1% of LOI) was achieved even after 50 detergent laundering cycles. A facile, boosted LbL approach with proposed π-π stacking interactions between PDA abundant aromatic structures and benzene ring in PHA from LbL layers, is first to put forward to construct durable efficient flame retardant (FR) cotton. This work attempted to enlighten more thoughts and design for durable FR cotton fabrics.