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Polyphosphazene–Tannic Acid Colloids as Building Blocks for Bio-Based Flame-Retardant Coatings
ACS Applied Polymer Materials ( IF 5 ) Pub Date : 2020-11-23 , DOI: 10.1021/acsapm.0c00574
Ayse Deniz 1, 2 , Nina Zaytoun 1, 2 , Laura Hetjens 1, 2 , Andrij Pich 1, 2, 3
Affiliation  

Colloids using hexachlorocyclophosphazene (HCCP) and natural polyphenol tannic acid (TA) were synthesized for the first time under precipitation polycondensation conditions. The synthesis parameters were optimized to obtain submicrometer cross-linked polymer colloids with variable TA/HCCP ratios. Using thermogravimetric analysis coupled with FTIR spectroscopy, we demonstrate that TA/HCCP particles exhibit high thermal stability and high char-forming ability. Synthesized polymer colloids can be easily redispersed in water, forming colloidally stable dispersions as confirmed by dynamic light scattering. Aqueous formulations of TA/HCCP particles were used to coat cotton samples. TA/HCCP coatings exhibit excellent flame-retardant properties with a maximal limiting oxygen index (LOI) of 35.

中文翻译:

聚磷腈-鞣酸胶体作为生物基阻燃涂料的基础

在沉淀缩聚条件下,首次合成了使用六氯环磷腈(HCCP)和天然多酚鞣酸(TA)的胶体。优化合成参数以获得具有可变TA / HCCP比的亚微米级交联聚合物胶体。使用热重分析与FTIR光谱相结合,我们证明TA / HCCP颗粒具有高的热稳定性和高的成炭能力。合成的聚合物胶体可以很容易地重新分散在水中,形成胶体稳定的分散体,这通过动态光散射得到了证实。TA / HCCP颗粒的水性制剂用于涂覆棉样品。TA / HCCP涂层具有出色的阻燃性能,最大极限氧指数(LOI)为35。
更新日期:2020-12-11
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