Salmeia Khalifah A, Jovic Milijana, Ragaisiene Audrone, Rukuiziene Zaneta, Milasius Rimvydas, Mikucioniene Daiva, Gaan Sabyasachi
Additives and Chemistry, Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland.
Faculty of Mechanical Engineering and Design, Department of Materials Engineering, Kaunas University of Technology, Kaunas LT-51424, Lithuania.
Polymers (Basel). 2016 Aug 10;8(8):293. doi: 10.3390/polym8080293.
Cellulose fibers are promoted for use in various textile applications due their sustainable nature. Cellulose-based fibers vary considerably in their mechanical and flammability properties depending on their chemical composition. The chemical composition of a cellulose-based fiber is further dependent on their source (i.e., seed, leaf, cane, fruit, wood, bast, and grass). Being organic in nature, cellulose fibers, and their products thereof, pose considerable fire risk. In this work we have compared the flammability properties of cellulose fibers obtained from two different sources (i.e., cotton and peat). Compared to cotton cellulose textiles, peat-based cellulose textiles burn longer with a prominent afterglow which can be attributed to the presence of lignin in its structure. A series of phosphoramidates were synthesized and applied on both cellulose textiles. From thermogravimetric and pyrolysis combustion flow analysis of the treated cellulose, we were able to relate the flame retardant efficacy of the synthesized phosphorus compounds to their chemical structure. The phosphoramidates with methyl phosphoester groups exhibited higher condensed phase flame retardant effects on both types of cellulose textiles investigated in this study. In addition, the bis-phosphoramidates exhibited higher flame retardant efficacy compared to the mono-phosphoramidates.
由于纤维素纤维具有可持续性，因此被推广用于各种纺织应用中。基于纤维素的纤维，其机械性能和燃烧性能因其化学成分的不同而有很大差异。纤维素基纤维的化学成分进一步取决于其来源（即种子、叶子、甘蔗、水果、木材、韧皮和草）。纤维素纤维及其产品本质上是有机的，存在相当大的火灾风险。在这项工作中，我们比较了从两种不同来源（即棉花和泥炭）获得的纤维素纤维的燃烧性能。与棉纤维素纺织品相比，泥炭基纤维素纺织品燃烧时间更长，有明显的余辉，这可归因于其结构中存在木质素。合成了一系列磷酰胺酯并应用于两种纤维素纺织品上。通过对处理过的纤维素进行热重分析和热解燃烧流分析，我们能够将合成磷化合物的阻燃效果与其化学结构联系起来。具有甲基磷酸酯基团的磷酰胺酯对本研究中所研究的两种纤维素纺织品均表现出更高的凝聚相阻燃效果。此外，双磷酰胺酯比单磷酰胺酯表现出更高的阻燃效果。
