A green approach to constructing multilayered nanocoating for flame retardant treatment of polyamide 66 fabric from chitosan and sodium alginate

被引：109
作者：
Kundu, Chanchal Kumar [1 ]
Wang, Wei [1 ]
Zhou, Shun [1 ]
Wang, Xin [1 ]
Sheng, Haibo [1 ]
Pan, Ying [1 ]
Song, Lei [1 ]
Hu, Yuan [1 ]
机构：
[1] Univ Sci & Technol China, State Key Lab Fire Sci, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2017年 / 166卷
基金：
中国国家自然科学基金;
关键词：
Chitosan; Oxidized sodium alginate; Phytic acid; Layer-by-layer assembly; Flame retardancy; BY-LAYER ARCHITECTURES; THERMAL-BEHAVIOR; CHAR FORMATION; PHYTIC ACID; INTUMESCENT; COATINGS; POLYESTER; COTTON; POLYPHOSPHATES; FLAMMABILITY;
D O I：
10.1016/j.carbpol.2017.02.084
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Green polyelectrolytes including chitosan (CS), phytic acid (PA) and oxidized sodium alginate (OSA) were deposited on polyamide 66 (PA66) fabrics in a quadralayer (QL) fashion like (CS-PA-CS-OSA)(n) (where "n" denotes the number of quadra layers) via layer-by-layer (LbL) assembly to improve the flame retardant property. In the vertical burning test, the PA66 fabric with 10 and 15 QL, depositions could stop the melt dripping. Cone calorimetry results showed that a maximum reduction (24%) in the peak heat release rate was achieved for the PA66 fabric with 5 QL depositions. Thermogravimetric analysis indicated that the presence of the polyelectrolytes catalyzed the degradation pathway of virgin PA66 fabric where the initial decomposition temperature was reduced and the char yield was enhanced for all the coated fabrics significantly. Moreover, UV-vis spectroscopy demonstrated that the use of OSA could improve the durability of such a multilayered nanocoating. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：131 / 138
页数：8
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