• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >A novel tin-based imidazolium-modified montmorillonite catalyst for the preparation of poly(butylene terephthalate)-based nanocomposites using in situ entropically-driven ring-opening polymerization
【24h】

A novel tin-based imidazolium-modified montmorillonite catalyst for the preparation of poly(butylene terephthalate)-based nanocomposites using in situ entropically-driven ring-opening polymerization

机译：一种新型的锡基咪唑鎓改性蒙脱土催化剂，用于原位熵驱动开环聚合制备聚对苯二甲酸丁二酯基纳米复合材料

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

A novel alkylimidazolium salt incorporating a 2,2-di-n-butyl[1,3,2]dioxastannolane moiety was synthesized and characterized. Its effectiveness as a transesterification catalyst in the entropically-driven ring-opening polymerization (ED-ROP) of macrocyclic oligomers of butylene terephthalate (BT-MCOs) was comparable to that of other tin-based transesterification catalysts. A supported version of the catalyst was prepared by ion exchange with the sodium cations present in montmorillonite. X-Ray analysis indicated the imidazolium species entered the galleries between the silicate layers. The supported catalyst was significantly more thermally stable than the non-supported catalyst. Poly(butylene terephthalate)-clay nanocomposites were obtained by the in situ ED-ROP of BT-MCOs intercalated between the clay layers, catalyzed by either the supported tin-based catalyst or by a catalyst prepared in situ from a supported imidazolium salt with diol moieties and di-n-butyldimethoxytin. X-Ray diffraction and transmission electron microscopy indicated that the ensuing nanocomposites exhibit a mix of intercalated and exfoliated silicate nanolayers.
机译：合成并表征了一种新型的结合有2,2-二正丁基[1,3,2]二氧黄烷醇部分的烷基咪唑鎓盐。它在对苯二甲酸丁二醇酯（BT-MCOs）大环低聚物的熵驱动开环聚合（ED-ROP）中作为酯交换催化剂的功效可与其他锡基酯交换催化剂媲美。通过与蒙脱土中存在的钠阳离子进行离子交换来制备催化剂的负载型。 X射线分析表明，咪唑类物质进入了硅酸盐层之间的画廊。负载型催化剂比非负载型催化剂具有更高的热稳定性。聚对苯二甲酸丁二醇酯-粘土纳米复合材料是通过在粘土层之间插入BT-MCO的原位ED-ROP或负载型锡基催化剂或负载型咪唑鎓盐和二醇就地制备的催化剂来获得的部分和二正丁基二甲氧基锡。 X射线衍射和透射电子显微镜表明，随后的纳米复合材料表现出插层的和剥落的硅酸盐纳米层的混合物。

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