Статья

Chitosan/Phytic Acid Polyelectrolyte Complex: A Green and Renewable Intumescent Flame Retardant System for Ethylene–Vinyl Acetate Copolymer

Tao ZhangDepartment of Packaging Engineering, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, People’s Republic of ChinaHongqiang YanLab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of ChinaLie ShenMOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of ChinaZhengping FangLab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of ChinaXianming ZhangNational & Local United Engineering Laboratory of Textile Fiber Materials and Processing Technology, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, People’s Republic of ChinaJiajun WangDepartment of Packaging Engineering, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, People’s Republic of ChinaBaoyue ZhangDepartment of Packaging Engineering, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, People’s Republic of China

2014en

ABI

Аннотация

We describe the preparation and characterization of a green and renewable polyelectrolyte complex (PEC) containing phosphorus, nitrogen and carbon elements, based on the ionic complexation between chitosan and phytic acid. Introduction of this PEC to ethylene–vinyl acetate copolymer (EVA) leads to an improvement of the flame retardancy. As for the EVA/PEC composites with 20.0 wt % of PEC (EVA/20PEC), the char residue at 600 °C is 12 wt % higher than that of the pristine EVA under nitrogen atmosphere. Compared to the pristine EVA, the peak heat release rate and total heat release of EVA/20PEC show 249 W g–1 and 5.6 kJ g–1 decreases, respectively. The char residue of EVA/20PEC is full and compact, demonstrating excellent intumescent effect. Introduction of this PEC also contributes to a slight increase of the Young’s modulus while maintains the excellent ductility. This work provides a new approach for the development of environmentally friendly intumescent flame retardant system.

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Идентификаторы

DOI: 10.1021/ie503421f

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar