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纸吸管高锰酸钾消耗量的影响因素分析
Analysis of Influencing Factors on the Consumption of Potassium Permanganate in Paper Straws
投稿时间:2021-08-10  
DOI:10.11980/j.issn.0254-508X.2022.02.008
关键词:  纸吸管  高锰酸钾消耗量  紫外可见分光光度计  淀粉
Key Words:paper straws  potassium permanganate consumption  Ultraviolet-visible spectrophotometer  starch
基金项目:国家自然科学基金项目(21466000);江苏省自然科学基金(BK20210063);无锡学院人才启动经费(2021r029#)。
作者单位邮编
陈杰 无锡学院江苏无锡214105
江南大学纺织科学与工程学院造纸研究室 江苏无锡214122 
214122
龙柱* 江南大学纺织科学与工程学院造纸研究室 江苏无锡214122 214122
郑辉 旭川新材料(广东)股份有限公司广东广州511470 511470
李娟 金华盛纸业(苏州工业园区)有限公司江苏苏州215126 215126
王志英 旭川新材料(广东)股份有限公司广东广州511470 511470
刘仙阳 金华盛纸业(苏州工业园区)有限公司江苏苏州215126 215126
朱瑞丰 江南大学纺织科学与工程学院造纸研究室 江苏无锡214122 214122
何婉贤 旭川新材料(广东)股份有限公司广东广州511470 511470
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摘要:高锰酸钾(KMnO4)消耗量作为食品接触用纸和纸板材料及制品安全的一个重要指标,反映从食品接触材料迁移到浸泡液中能被KMnO4氧化物质的含量。本研究采用返滴定法测试纸吸管中KMnO4消耗量,并探讨纸吸管中各因素对KMnO4消耗量的影响。结果表明,配比高的漂白化学热磨机械浆制备纸张的KMnO4消耗量大于配比低的;表面施胶淀粉的纸张KMnO4消耗量高于未施胶,施胶量越大,KMnO4消耗量越大。KMnO4消耗量随着纸吸管层数和浸泡的面积/体积比(S/V)增大而提高。研究还表明,纸吸管的原纸中含有无害还原性物质以及其水解产物可能会迁移到水浸泡液中引起KMnO4消耗量增加,但需要进一步深入研究。
Abstract:The consumption of potassium permanganate (KMnO4) is an important safety indicator for food contact paper/cardboard materials and products, demonstrating the content of substances that can be oxidized by KMnO4 during the migration from food contact material to soaking solution. In this study the back titration method was used to test the KMnO4 consumption in paper straws and various factors influencing the KMnO4 consumption in paper straws were discussed. The results showed that the KMnO4 consumption of paper with high ratio of bleached chemical thermal mechanical pulp was greater than that of its low-ratio counterpart. Paper with external sizing consumed more KMnO4 than that without sizing, the higher sizing agent content, the greater KMnO4 consumption. The KMnO4 consumption of paper straws increased as the number of layers and soaked area/volume ratio (S/V) increased. It was further showed that the paper straws base paper contained harmless reducing substances and their hydrolysates may migrate into the soaking solution and cause increased KMnO4 consumption, which required further study.
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