• 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 >Recent developments in the radiation grafting of N-vinyl-2-pyrrolidone onto low-density polyethylene with cinnamonitrile derivatives
【24h】

Recent developments in the radiation grafting of N-vinyl-2-pyrrolidone onto low-density polyethylene with cinnamonitrile derivatives

机译：N-乙烯基-2-吡咯烷酮与肉桂腈衍生物辐射接枝到低密度聚乙烯上的最新进展

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 radiation-induced graft polymerization of N-vinyl-2-pyrrolidone onto low-density polyethylene films was conducted with gamma radiation by a simultaneous technique. The grafted copolymer was modified with cinnamonitrile or benzylidene malononitrile. The modified and grafted films were amidoximated with hydroxylamine hydrochloride in a basic medium. However, during amidoximation, the benzylidene malononitrile was cyclized to yield isoxazole ring through an addition to the nitrile group in its structure, whereas the nitrile groups of cinnamonitrile were converted into arnidoxime groups. The swelling behavior of the grafted copolymers and copolymers grafted and modified either with cinnamonitrile or benzylidene malononitrile was studied. Amidoximated and grafted films and copolymer-metal complexes of Cu(II) were prepared and characterized. The effect of the isoxazole ring on polymeric materials was also investigated. These films were characterized with different analysis techniques, such as infrared, ultraviolet (UV), elemental analysis, energy-dispersive spectroscopy, and electron spin resonance (ESR). The UV and ESR analyses revealed that the geometric Structure of Cu(II) was square-planar. Scanning electron microscopy was used to examine the grafted and modified films to determine the changes in the surface morphology. Morphological changes clearly appeared for both complexed and isoxazole films because of the increase in their crystallinity. The thermal stability of different films was investigated with thermogravimetric analysis. The improvement of the copolymer by modification with cinnamonitrile derivatives showed great promise for some practical applications, such as metal recovery by complexation or the use of isoxazole in medicine. (C) 2005 Wiley Periodicals, Inc.
机译：N-乙烯基-2-吡咯烷酮的辐射诱导接枝聚合在低密度聚乙烯薄膜上是通过同时辐射技术进行的。接枝共聚物用肉桂腈或亚苄基丙二腈改性。在碱性介质中，用盐酸羟胺将改性和接枝的膜酰胺化。然而，在酰胺基肟化过程中，亚苄基丙二腈通过在其结构中的腈基上加成而环化以产生异恶唑环，而肉桂腈的腈基则被转化为阿尼肟基。研究了接枝共聚物以及用肉桂腈或亚苄基丙二腈接枝和改性的共聚物的溶胀行为。制备并表征了氨基肟化和接枝的Cu（II）薄膜和共聚物-金属配合物。还研究了异恶唑环对聚合物材料的影响。这些膜采用不同的分析技术进行了表征，例如红外，紫外线（UV），元素分析，能量色散光谱和电子自旋共振（ESR）。 UV和ESR分析表明，Cu（II）的几何结构为正方形。扫描电子显微镜用于检查接枝和改性的薄膜，以确定表面形态的变化。复合膜和异恶唑膜的结晶度变化都明显出现，因为它们的结晶度增加。用热重分析法研究了不同薄膜的热稳定性。通过用肉桂腈衍生物改性来改善共聚物对某些实际应用显示出了很大的希望，例如通过络合回收金属或在医学中使用异恶唑。 （C）2005 Wiley期刊公司

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