• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biocontrol Science >Role of a surfactant in caustic alkali cleaning of polyethylene terephthalate surfaces fouled with organic substances
【24h】

Role of a surfactant in caustic alkali cleaning of polyethylene terephthalate surfaces fouled with organic substances

机译：表面活性剂在用有机物质污染的聚对苯二甲酸乙二醇酯表面的苛性碱清洗中的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The role of polyoxyethylene lauryl ether (POELE), a nonionic surfactant, in removing bovine serum albumin (BSA) and catechin from polyethylene terephthalate (PET) particles was quantitatively studied. Relatively large fractions of adsorbed BSA and catechin were removed from PET particles under weak alkaline conditions below pH 9, whereas cleaning with high concentrations of NaOH was not so effective, especially on the removal of BSA. This was attributed to the lower susceptibility of PET particles to water-based alkali (OH-) cleaning because of the lower degree of the polarity of PET surfaces. The combined use of NaOH solutions of moderate pHs and POELE could successfully improve the efficiency of cleaning of PET particles without a significant dissolution of PET materials. There was a good correlation between the lowered surface tension (7) of the NaOH solution with POELE and the removal efficiency of BSA or catechin. No effect of POELE was observed on the NaOH cleaning of hydrophilic alumina (A12O3) particles fouled with BSA. It could be concluded that the role of POELE in NaOH cleaning of PET particles was to lower the gamma of the NaOH solution and hence to facilitate penetration of OH- ions into the PET-BSA and PET-catechin interfaces.
机译：定量研究了非离子表面活性剂聚氧乙烯月桂基醚（POELE）在从聚对苯二甲酸乙二醇酯（PET）颗粒中去除牛血清白蛋白（BSA）和儿茶素中的作用。在pH值低于9的弱碱性条件下，从PET颗粒中除去了相对较大比例的吸附BSA和儿茶素，而用高浓度的NaOH清洗效果不那么好，尤其是在去除BSA上。这归因于PET颗粒对水基碱（OH-）清洁的敏感性较低，因为PET表面的极性较低。中等pH值的NaOH溶液和POELE的组合使用可以成功提高PET颗粒的清洁效率，而不会明显溶解PET材料。用POELE降低的NaOH溶液的表面张力（7）与BSA或儿茶素的去除效率之间具有良好的相关性。在用BSA污染的亲水性氧化铝（Al2O3）颗粒的NaOH清洁中未观察到POELE的影响。可以得出结论，POELE在NaOH清洁PET颗粒中的作用是降低NaOH溶液的伽马值，从而促进OH-离子渗透到PET-BSA和PET-儿茶素界面中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号