Preparation of Xanthan Gum-G-N-Vinylpyrrolidone by Radiation and Adsorption Property of Phenol and Polyphenol

Abstract:

Simultaneous radiation grafting method（⁶⁰Co γ as radiation source）was used to prepare xanthan gum - graft - N-Vinypyrrolidone (XG-g-NVP). FT-IR spectra showed that grafting reaction occurred in NVP Vinyl part and lactam structure was retained. Thermo gravimetric analysis showed that, XG-g-NVP enhanced thermal stability of xanthan gum. XRD showed the crystallinity increased after grafting. At the grafting yield of 623%, XG-g-NVP had the maximum adsorption capacity of phenol and TP, the adsorption amount of which were 0.76 g/g and 2.85 g/g respectively. PH value had the different effects on the adsorption of phenol and tea polyphenols by XG-g-NVP.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 2694-2700
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.2694
• Online since: May 2011
• Authors: Yong Fu Li, Yi Ming Ha, Le Ren Tao, Yan Jie Li, Feng Wang
• Keywords: N-Vinylpyrrolidone, Phenol, Polyphenol, Radiation, Xanthan Gum

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