Thermal degradation of DNA, an all-in-one natural intumescent flame retardant

被引:97
作者
Alongi, Jenny [1 ]
Di Blasio, Alessandro [1 ]
Milnes, John [2 ]
Malucelli, Giulio [1 ]
Bourbigot, Serge [3 ]
Kandola, Baljinder [2 ]
Camino, Giovanni [1 ]
机构
[1] Politecn Torino, Dipartimento Sci Applicata & Tecnol, Sede Alessandria, I-15121 Alessandria, Italy
[2] Univ Bolton, Inst Mat Res & Innovat, Bolton BL3 5AB, England
[3] Ecole Natl Super Chim Lille, Equipe Ingn Syst Polymeres, CNRS UMR 8207, Unite Mat & Transformat UMET, F-59652 Villeneuve Dascq, France
关键词
Thermal degradation; TGA; TGA-IR; Pyrolysis-Combustion Flow Calorimeter; Intumescent flame retardants; COTTON; IR;
D O I
10.1016/j.polymdegradstab.2014.11.001
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Very recently, deoxyribonucleic acid (DNA) has proven to be an efficient renewable, natural flame suppressant and retardant, due to its intrinsic intumescent features. In our previous work, we have explored its flame retardant activity by applying as a surface coating on cotton fabrics and observed that on exposure to heat, the DNA was able to form a foamed char on the surface of the fabric. These remarkable results have stimulated the present study on in-depth understanding of mechanism of thermal degradation of DNA. A number of characterization techniques have been exploited to investigate DNA decomposition, namely: thermogravimetry coupled with infrared spectroscopy or combined with differential thermal analysis, pyrolysis-combustion flow calorimetry and analysis of degradation residues. A scheme of DNA degradation mechanism is proposed to account for the results of the study. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:110 / 118
页数:9
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