Thermal degradation of DNA, an all-in-one natural intumescent flame retardant
Thermal degradation of DNA, an all-in-one natural intumescent flame retardant
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DOI：
10.1016/j.polymdegradstab.2014.11.001
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发表时间：
2015-03-01
影响因子：
5.9
通讯作者：
Camino, Giovanni
中科院分区：
文献类型：
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作者：
Alongi, Jenny;Di Blasio, Alessandro;Camino, Giovanni
最近，脱氧核糖核酸（DNA）已被证明是一种有效的可再生的天然阻燃剂和阻燃剂，由于其固有的膨胀特性。在我们以前的工作中，我们通过在棉织物上作为表面涂层来探索其阻燃活性，并观察到在暴露于热时，DNA能够在织物表面上形成泡沫状炭。这些显著的结果促进了对DNA热降解机理的深入理解。一些表征技术已被用来研究DNA的分解，即：热重结合红外光谱或结合差热分析，热解燃烧流动量热法和降解残留物的分析。提出了一个DNA降解机制的方案来解释研究结果。(C)2014爱思唯尔有限公司版权所有。
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.