期刊文献+

低温等离子体辅助制备zein/PCL复合膜的工艺

Preparation of zein/PCL composite film assisted by low-temperature plasma pretreatment
下载PDF
导出
摘要 为了提高玉米醇溶蛋白膜的耐水特性,采用低温等离子体辅助制备了玉米醇溶蛋白(zein)/聚己内酯(PCL)复合膜,并通过单因素和响应面试验优化PCL的接枝工艺。研究结果表明,PCL的最佳接枝工艺为:等离子体处理电压56.2 V,处理时间26 s,PCL接枝液浓度3.89%,接枝时间30.11 min。在此条件下,PCL接枝率可达到30.35%±0.74%,显著高于未处理的接枝率(12.67%±0.51%),说明低温等离子体预处理可有效提高PCL在zein膜表面的接枝率。对zein/PCL复合膜进行功能性质表征,结果表明:zein/PCL膜吸水率为6.54%±1.81%,显著低于zein膜(22.58%±1.68%)(p<0.05);接触角相比zein膜也有显著增加(p<0.05),证明等离子体辅助制备的zein/PCL复合膜相比纯zein膜耐水性有显著提高。此外,土壤降解实验显示,PCL膜在土埋四周内表面形貌变化不明显,而zein/PCL膜在土埋第三周时出现了较明显的霉斑,具有相对良好的土壤降解能力。本文结果可为低温等离子体辅助耐水性蛋白膜的开发提供理论依据。 In order to improve the water resistance of zein film,zein/PCL composited films were prepared assisted by low-temperature plasma pretreatment.The grafting technology of PCL was optimized by single factor experiments and response surface test.Results showed that the low-temperature plasma pretreatment could facilitate grafting efficiency of PCL onto zein surface.The optimized conditions was as follows:plasma voltage of 56.2 V,treatment time of 26 s,PCL concentration of 3.89%(w/v)and grafting time of 30.11 min,under which the grafting rate of PCL could reach 30.35%±0.74%,which was significantly higher than the untreated(12.67%±0.51%).The water resistance property test showed that the composited film under optimized technology exhibited significant lower water absorption(6.54%±1.81%)compared to raw zein film(22.58%±1.68%)(p<0.05).The contact angle also increased significantly compared to zein film(p<0.05),indicating the water resistance property has improved.In addition,soil degradation test showed that obvious mildew spots started to form on zein/PCL composited film after being buried for 3 weeks,indicative of relative better soil degradation ability.The results provide theoretical basis for developing water proof protein films assisted by low-temperature plasma.
作者 董爽 陈野 马成业 郭鹏 DONG Shuang;CHEN Ye;MA Chengye;GUO Peng(School of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255049,China;College of Food Science and Engineering,Tianjin University of Science Technology,Tianjin 300457,China)
出处 《山东理工大学学报(自然科学版)》 CAS 2021年第5期1-7,共7页 Journal of Shandong University of Technology:Natural Science Edition
基金 国家自然科学基金项目(31901607)。
关键词 玉米醇溶蛋白 等离子体 复合膜 耐水性 zein plasma composite film water resistant property
  • 相关文献

参考文献4

二级参考文献36

共引文献22

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部