• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Polymers and the Environment >Leaching and Biodegradation of Darocur 1173 used as a Photo-Initiator in the Production of Photocrosslinked Silicone Acrylates
【24h】

Leaching and Biodegradation of Darocur 1173 used as a Photo-Initiator in the Production of Photocrosslinked Silicone Acrylates

机译：Darocur 1173在光交联的丙烯酸硅酯生产中用作光引发剂的浸出和生物降解

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

Photocrosslinked silicone acrylates are used for a wide variety of applications, such as photocurable coatings, printing inks and adhesives. Their production requires the use of a photoinitiator (PI), such as Darocur 1173 (2-hydroxy-2-methyl-1-phenyl-propan-1-one). Even if PI represents a minor part of the formulation, residual amounts may remain in the polymerized products and possibly migrate into the environment during the use of the end products and/or at their end-of-life stage. To assess its possible fate under different environmental conditions, the release of Darocur 1173 from photocrosslinked silicone acrylates and its biodegradation were investigated. Leaching tests in water were conducted on thick coating and thin coated plastic films. Results showed that approximately 90% of the amount of Darocur 1173 used to synthesize thick coatings was released within 8 days of experiment. Biodegration assays were also done to assess the biodegradation of silicone coatings and PI under experimental conditions simulating the products' end-of-life in sewage treatment plants (aerobic conditions) or in domestic waste landfills (anaerobic conditions). Results showed no biodegradation of thick coatings and PI under anaerobic conditions. An inhibitory effect was even observed on the biodegradation of glucose used as a reference biodegradable molecule. Under aerobic conditions however, PI was totally biodegraded and used as a carbon source, unlike the silicone coating which was not biodegraded.
机译：光交联的有机硅丙烯酸酯可用于多种应用，例如光固化涂料，印刷油墨和粘合剂。它们的生产需要使用光引发剂（PI），例如Darocur 1173（2-羟基-2-甲基-1-苯基-丙-1-酮）。即使PI占配方的一小部分，残留量也可能保留在聚合产物中，并可能在最终产物的使用过程中和/或在其寿命终止阶段迁移到环境中。为了评估其在不同环境条件下的命运，研究了Darocur 1173从光交联的有机硅丙烯酸酯中的释放及其生物降解性。水中的浸出试验是在厚涂层和薄涂层塑料薄膜上进行的。结果显示，用于合成厚涂层的Darocur 1173量的大约90％在实验的8天内被释放。还进行了生物降解测定，以评估在模拟污水处理厂（有氧条件）或生活垃圾填埋场（厌氧条件）中产品报废的实验条件下硅酮涂层和PI的生物降解。结果表明，在厌氧条件下，厚涂层和PI均未发生生物降解。甚至观察到对用作参考可生物降解分子的葡萄糖的生物降解具有抑制作用。然而，在有氧条件下，PI完全被生物降解并用作碳源，这与未生物降解的有机硅涂层不同。

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