Preparation and properties of cardanol‐based polybenzoxazine/SiO2 hybrids by sol‐gel technique. Issue 6 (18th October 2012)

• Record Type: Journal Article
• Authors: Li, Shengfang; Zou, Tao; Feng, Li; Liu, Xianli; Tao, Min
• Is Part Of: Journal of applied polymer science. Volume 128:Issue 6(2013:Jun. 15)
• Page Start: 4164
• Page End: 4171
• Publication Date: 2012-10-18
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.38607
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new cardanol‐based benzoxazine monomer containing a hydroxyl group (CBZ) was synthesized and characterized by FT‐IR and ¹H NMR spectroscopy. The formation mechanism of cardanol‐based polybenzoxazine/SiO₂ hybrids from CBZ and tetraethoxysilane (TEOS) by sol‐gel technique was invested by FT‐IR analysis. FT‐IR and SEM confirmed that there were many SiO₂ particles formed and embedded in the cardanol‐based polybenzoxazine. A phase separation occurred when the ratio (wt) of TEOS to CBZ was not less than 3 : 5. TGA results illuminated the thermal stability and char yield of cardanol‐based polybenzoxazine could be enhanced due to the formation of SiO₂ particles in the polybenzoxazine matrix. Incorporation of SiO₂ could improve the surface de‐wetting and anti‐ultraviolet properties of the films. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013</p> </abstract>