• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Depolymerization protocol for linear, branched, and crosslinked end-of-life silicones with boron trifluoride diethyl etherate as the depolymerization reagent
【24h】

Depolymerization protocol for linear, branched, and crosslinked end-of-life silicones with boron trifluoride diethyl etherate as the depolymerization reagent

机译：线性，支化和交联的报废有机硅的解聚方案，以三氟化硼二乙醚为解聚剂

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

An important issue for current society is the accumulation of large amounts of end-of-life polymers, which are mainly deposited in landfills, converted by thermal recycling or down cycling to low-quality materials. In contrast to that, the feedstock recycling of end-of-life polymers to produce new high-quality polymers is only applied to a small portion of waste. In more detail, low-molecular weight chemicals are generated by this methodology; they can be polymerized in a second step to produce new high-quality polymers. Notably, with these depolymerization-polymerization processes, contributions to a more sustainable, resource-conserving, and environmentally benign society can be made. In this regard, we have set up a capable protocol for the depolymerization of polysiloxanes, which are applied extensively in numerous technological applications. Boron trifluoride diethyl etherate was used as a depolymerization reagent to transform Si-O bonds in linear, branched, and crosslinked silicones to Si-F bonds. As depolymerization products, difluorodimethyl silane for linear polysiloxanes and methyl trifluorosilane for branched polysiloxanes were obtained; these were suitable synthons for new polymers and will allow an overall recycling of polysiloxanes. (C) 2015 Wiley Periodicals, Inc.
机译：当前社会的一个重要问题是大量报废聚合物的积累，这些聚合物主要沉积在垃圾填埋场中，通过热循环或向下循环转化为劣质材料。与此相反，将报废聚合物的原料循环利用以生产新的高质量聚合物的方法仅适用于一小部分废物。更详细地说，通过这种方法可以产生低分子量化学物质。它们可以在第二步中聚合以生产新的高质量聚合物。显然，通过这些解聚-聚合过程，可以为建立更可持续，节约资源和环境友好的社会做出贡献。在这方面，我们已经建立了一种用于聚硅氧烷解聚的有效方案，该方案已广泛应用于众多技术应用中。三氟化硼二乙基醚化物用作解聚试剂，可将直链，支链和交联有机硅中的Si-O键转变为Si-F键。作为解聚产物，获得了用于线性聚硅氧烷的二氟二甲基硅烷和用于支链聚硅氧烷的甲基三氟硅烷。这些是适用于新聚合物的合成子，将能够全面回收聚硅氧烷。 （C）2015年Wiley Periodicals，Inc.

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