Coordination driven layer‐by‐layer deposition technology used for fabrication of flame retardant polyamide 66 fabric

Abstract

Phytic acid (IP6) as the major phosphorus‐containing component of certain plants, such as cereal, oil plant, and bean possesses strong capability of coordinating with metal ion to form complex salt. In this study, low concentration IP6 was utilized in combination with Al3+ ion to in situ form insoluble Al3+‐IP6 complex salt on the surface of the fabric through coordination driven layer‐by‐layer deposition technology without high temperature cure step, which is an attempt to provide a facile bio‐based flame retardant finishing to polyamide (PA) 66 fabric. Surface structure of the treated PA fabric has been analyzed via ATR‐FTIR and SEM characterization. Effect of BLs' number on the flame retardancy and burning behavior of the treated sample has been examined by the limiting oxygen index (LOI) test, the vertical burning test, microcalorimetry, and thermogravimetric analysis. The results show that 20LBL PA fabric has the highest LOI value, highest residual char yield, and lowest THR value in all the samples and no melt dripping behavior could be detected during combustion of 20LBL PA fabric. Moreover, the insolubility of Al3+‐IP6 salt from the surface could promote the durability of the treated fabric after laundering procedure using water single. This is the first time to use coordination driven layer‐by‐layer deposition technology in the fabric's flame retardant finishing.

Filtre uygulamaları için Polyamid 6.6 esaslı nanolif yapılı membranların elektrospinning yöntemi ile üretimi ve karakterizasyonu

“…Asimetrik C-H gerilmesi 2932 cm -1 'de gözlenirken, simetrik C-H gerilmesi 2860 cm -1 'de gözlenmiştir. Bunun yanı sıra 1800 ve 600 cm -1 arasındaki bölge ise kristalin ve amorf titreşimler dâhil olmak üzere pek çok titreşimleri içermektedir [19,20].…”

Synthesis of a graft‐functionalized flame retardant based on DOPO and its application on the surface of terylene/cotton fabrics

“…Prolonged high-temperature drying can also negatively impact the mechanical properties of the fabric, and it appears that the high coating specific gravity may limit the fabric's practical applications. [9][10][11] Therefore, finding a preparation method that achieves low coating specific gravity and high flame-retardant efficiency seems to be the crux of addressing this issue.…”

“…While this approach can be more effective in preventing flame propagation, the repetitive immersion and drying process significantly extend the preparation cycle. Prolonged high‐temperature drying can also negatively impact the mechanical properties of the fabric, and it appears that the high coating specific gravity may limit the fabric's practical applications 9–11 . Therefore, finding a preparation method that achieves low coating specific gravity and high flame‐retardant efficiency seems to be the crux of addressing this issue.…”