Effect of starch-based flame retardant on the thermal degradation and combustion properties of reconstituted tobacco she
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ORIGINAL RESEARCH
Effect of starch-based flame retardant on the thermal degradation and combustion properties of reconstituted tobacco sheet Ning Shao . Yaqing Qu . Li Hou . Yonghua Hu . Zhengfeng Tian . Yun Gao . Xiaolan Zhu
Received: 12 May 2020 / Accepted: 12 November 2020 Ó Springer Nature B.V. 2020
Abstract In this paper, starch, distarch phosphate (DSP) and hydroxypropyl distarch phosphate (HPDSP) were used as ‘‘green’’ carbon sources with ammonium polyphosphate (APP) to prepare flame retardant reconstituted tobacco sheet (RTS) by papermaking process and the effect of these starch-based flame retardants on their thermal degradation and combustion properties was preliminarily investigated. Micro-scale combustion calorimetry results showed the value of the heat release of modified RTS was lower than that of pure RTS, demonstrating the restrained combustion behavior of modified RTS.
TG-FTIR and TG-MS analysis indicated that the starch-based flame retardant coating promoted the char formation, inhibited char combustion and release of gaseous products except for NH3, with the relative best comprehensive performance of APP-DSP. Cigarette burning cone analysis also confirmed that the modified RTS had lower temperature and smaller burning cone volume than that of pure RTS, especially APP-HPDSP-RTS. This work could highly expand the application of starch and its derivatives in flame retardant and tobacco industry.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03587-8) contains supplementary material, which is available to authorized users. N. Shao Y. Qu L. Hou Y. Gao X. Zhu (&) The USTC-Anhui Tobacco Joint Laboratory of Tobacco Chemistry, Research Center of Tobacco and Health, University of Science and Technology of China, Hefei 230052, China e-mail: [email protected] Y. Hu (&) Z. Tian The USTC-Anhui Tobacco Joint Laboratory of Tobacco Chemistry, Center of Technology, China Tobacco Anhui Industrial Corporation, Hefei 230088, China e-mail: [email protected]
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Cellulose
Graphic abstract
Keywords Starch Intumescent flame retardant Thermal degradation Combustion property Reconstituted tobacco sheet
Introduction Intumescent flame retardant (IFR) coating technology had been widely used in material field for offering an efficient flame retardancy to matrix including steel, woods and polymers in the past 30 years (Shi and Wang 2016; Zhao et al. 2020). Many various IFRs have been applied to modify the combustion characteristics of cotton-based fabrics (Chen et al. 2015b; Yan et al. 2018; Wang et al. 2019). Typically, IFR has three active ingredients, including carbon, acid and gas sources. Carbonization agent is the basis component of IFR, taking a vital effect on the formation of char that can be used as an obstacle to hinder the combustion of materials (Liu et al. 2018). A great deal of research has emerged in recent years about different carbonization agents, such as polyamide (Li et al.
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