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科技导报  2015 

活性炭负载高锰酸钾制作保鲜纸性能表征与分析

DOI: 10.3981/j.issn.1000-7857.2015.22.006, PP. 45-49

Keywords: 高锰酸钾,活性炭,保鲜纸

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Abstract:

将高锰酸钾负载在活性炭上制备保鲜剂,以纸基为承载体,采用浆内添加法制备保鲜纸。利用红外光谱(FTIR)、X射线衍射(XRD)、热重分析(TGA)和扫描电子显微镜(SEM)等手段对保鲜剂和保鲜纸进行表征。FTIR分析表明,饱和高锰酸钾负载活性炭使活性炭表面的含氧官能团含量增加,保鲜剂和纸基之间的结合属物理结合;XRD测试表明高锰酸钾会破坏活性炭的晶型结构,加入保鲜剂后保鲜纸的结晶度下降。由TGA曲线可知,保鲜纸热分解的起始温度和最大分解速率温度都低于对照组,这是因为保鲜纸的结晶度降低。SEM测试结果表明,保鲜剂的加入使保鲜纸表面变得粗糙。

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