Polyphosphazene–Tannic Acid Colloids as Building Blocks for Bio-Based Flame-Retardant Coatings

ACS Applied Polymer Materials, vol. 2, pp. 5345–5351

Abstract

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.

Authors 4

1. Ayşe Deniz Aachen DWI Leibniz Institute of Interactive Materials e.V Functional and Interactive Polymers Institute of Technical and Macromolecular Chemistry

   DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   DWI Leibniz Institute of Interactive Materials e.V., 52056 Aachen, Germany

   Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52056 Aachen, Germany

2. Nina Zaytoun Aachen DWI Leibniz Institute of Interactive Materials e.V Functional and Interactive Polymers Institute of Technical and Macromolecular Chemistry

   DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   DWI Leibniz Institute of Interactive Materials e.V., 52056 Aachen, Germany

   Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52056 Aachen, Germany

3. Laura Hetjens Aachen DWI Leibniz Institute of Interactive Materials e.V Functional and Interactive Polymers Institute of Technical and Macromolecular Chemistry

   DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   DWI Leibniz Institute of Interactive Materials e.V., 52056 Aachen, Germany

   Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52056 Aachen, Germany

4. Andrij Pich corresponding Aachen DWI Leibniz Institute of Interactive Materials e.V Functional and Interactive Polymers Institute of Technical and Macromolecular Chemistry

   Maastricht University · DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, 6167 RD Geleen, The Netherlands

   DWI Leibniz Institute of Interactive Materials e.V., 52056 Aachen, Germany

   Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52056 Aachen, Germany