王华山,陈頔,揣成智.对羟基苯甲醛表面改性 LLDPE / CS 共混膜的制备[J].包装工程,2014,35(9):6-9,26.
WANG Hua-shan,CHEN Di,CHUAI Cheng-zhi.Preparation of LLDPE / CS Blend Films Surface Modified with P-hydroxybenzaldehyde[J].Packaging Engineering,2014,35(9):6-9,26. |
| 对羟基苯甲醛表面改性 LLDPE / CS 共混膜的制备 |
| Preparation of LLDPE / CS Blend Films Surface Modified with P-hydroxybenzaldehyde |
| 投稿时间：2013-12-28 修订日期：2014-05-01 |
| DOI： |
| 中文关键词: 表面 对羟基苯甲醛席夫碱 共混包装膜 抑菌性能 |
| 英文关键词: surface modification p-hydroxybenzaldehyde Schiff base packaging film antibacterial activity |
| 基金项目:十二五科技支撑计划项目(2012BAK25B00) |
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| 中文摘要: |
| 目的 在 LLDPE / CS 共混膜表面缩合对羟基苯甲醛,制备表面席夫碱基 LLDPE / CS 功能包装膜。 方法 采用 L9(33) 正交实验探讨反应时间、反应温度及反应物浓度对 LLDPE / CS 包装膜表面的壳聚糖席夫碱基含量的影响。 结果 达到表面基团最大含量的最佳反应条件为 45 ℃ ,对羟基苯甲醛溶液的质量分数为 25% ,反应时间为 12 h。 对大肠杆菌、金黄色葡萄球菌和黑曲霉的抑菌实验表明,对羟基苯甲醛席夫碱基 LLDPE / CS 共混包装膜具有抑菌性所需要的最低基团含量分别是 0 . 1 ,0 . 2 ,0 . 3 mmol / cm2,且随着表面席夫碱基团含量增加而增加。 结论 FTIR 和1H NMR 分析结果表明,表面基团具有席夫碱的结构特征。 |
| 英文摘要: |
| Objective Schiff base LLDPE / CS functional packaging films were prepared by a condensation reaction of p hydroxybenzaldehyde and chitosan ( CS) . Methods The optimal conditions of LLDPE / CS films modification were obtained according to [ L9(33) ] . Results The optimal conditions were as follows: a reaction temperature of 45 ℃ , a p-hydroxybenzaldehyde concentration of 25% and a reaction time of 12 h. The study on antibacterial activities against Escherichia coli, Staphlococcus aureus and Aspergillus niger indicated that the lowest antibacterial concentrations of schiff base were 0. 1 mmol / cm2,0. 2 mmol / cm2and 0. 3 mmol / cm2, respectively, and the antibacterial activities were improved with the increasing contents of schiff base groups on the surface. Conclusion FTIR and1H NMR showed that there were schiff base groups on the films. |
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