• 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 >Compatibilization of polymer blends from poly styrene-co-acrylonitrile) and polycarbonate by oxazoline modification of poly(styrene-co-acrylonitrile) in the melt
【24h】

Compatibilization of polymer blends from poly styrene-co-acrylonitrile) and polycarbonate by oxazoline modification of poly(styrene-co-acrylonitrile) in the melt

机译：熔融状态下聚苯乙烯-丙烯腈的恶唑啉改性使聚苯乙烯-丙烯腈和聚碳酸酯的聚合物共混物相容

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 good way of achieving compatibility in polymer blends of poly(styrene-co-acrylonitrile) (S/AN) and bisphenol A polycarbonate (PC) is the chemical modification of S/AN in the melt. A catalyzed reaction of the nitrile groups with a substituted 2-amino alcohol or 2-amino phenol resulted in a conversion of nitrile groups of 55-75% in 60 min. The introduced heterocyclic structures were ethyl hydroxymethyl oxazoline (EHMOXA) and benzoxazole (BenzOXA), respectively. The use of dibutyltin oxide as a catalyst led to the highest efficiency. The modified polymer was characterized by Fourier transform infrared and NMR spectroscopy, elemental analysis, and reactions with organic acids and anhydrides. The modified S/AN showed good technical compatibility (single glass-transition temperature) with PC in blends made from solution and from the melt. All blends were characterized with oscillating rheometry and differential scanning calorimetry. Rheological measurements showed that EHMOXA-S/AN reacted with PC and had crosslinked structures, whereas BenzOXA-S/AN showed compatibilization without any (crosslinking) reaction. The melt blends of BenzOXA-S/AN and PC showed a downward shift in the complex viscosity due to the influence of the BenzOXA group. (C) 2003 Wiley Periodicals, Inc. [References: 55]
机译：在聚（苯乙烯-丙烯腈）（S / AN）和双酚A聚碳酸酯（PC）的聚合物共混物中实现相容性的一种好方法是熔体中S / AN的化学改性。腈基与取代的2-氨基醇或2-氨基苯酚的催化反应在60分钟内导致55-75％的腈基转化。引入的杂环结构分别是乙基羟甲基恶唑啉（EHMOXA）和苯并恶唑（BenzOXA）。使用二丁基氧化锡作为催化剂可获得最高效率。改性的聚合物通过傅立叶变换红外和NMR光谱，元素分析以及与有机酸和酸酐的反应进行表征。改性的S / AN在由溶液和熔体制成的共混物中与PC表现出良好的技术相容性（单玻璃化转变温度）。所有混合物均采用振荡流变法和差示扫描量热法进行表征。流变学测量表明，EHMOXA-S / AN与PC反应并具有交联结构，而BenzOXA-S / AN显示出相容性，没有任何（交联）反应。 BenzOXA-S / AN和PC的熔融共混物由于BenzOXA基团的影响，复数粘度下降。 （C）2003 Wiley Periodicals，Inc. [参考：55]

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