• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Part I. Characterization and polymerization of quinuclidinium-carboxylate inner salt. Part II. Alternating copolymerization of 2-substituted-2-oxazoline and epoxide.
【24h】

Part I. Characterization and polymerization of quinuclidinium-carboxylate inner salt. Part II. Alternating copolymerization of 2-substituted-2-oxazoline and epoxide.

机译：第一部分。喹啉羧酸盐内盐的表征和聚合。第二部分2-取代的2-恶唑啉和环氧化物的交替共聚。

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

Part I. Zwitterion I, 1- ((4-carboxyphenyl)methyl) -quinuclidium inner salt, prepared from quinuclidine and 4-(chloromethyl)-benzoic acid as a monohydrate, was stable at room temperature. The monohydrate lost its water of hydration at 90{dollar}spcirc{dollar}C under vacuum to form a stable anhydrous zwitterion. Bulk polymerizations of both the hydrate and the anhydrous zwitterion were studied at 170-260{dollar}spcirc{dollar}C. Polymers with structure II were produced with number average molecular weight in the range 4,000 to 16,000 g/mole. {dollar}sp1{dollar}H, {dollar}sp{lcub}1 3{rcub}{dollar}C, 2-D COSY NMR and FT-IR spectroscopies were used for the identification of structures I and II. The molecular weight of polymer II was determined by VPO and thermal properties of the polymer were evaluated by DSC and TGA.(DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE DAI); Part II. The alternating copolymerizations of 2-substituted-2-oxazolines and styrene oxide have been studied for the first time. The 2-substituted-2-oxazolines employed were 2-methyl-2-oxazoline (MeOXA), 2-t-butyl-oxazoline (t-BuOXA), and 2-phenyl-2-oxazoline (PhOXA).; In order to synthesize the alternating copolymer of oxazoline and styrene oxide, poly (2-phenyl-4-alkanoyl-1-oxa-4-azahexanediyl) (VI), two different approaches have been used: Approach 1--Directly copolymerize the 2-oxazoline and styrene oxide. In this approach, both homopolymerization of styrene oxide and copolymerization of oxazoline and styrene oxide were involved. Approach 2--Synthesize a bicyclic amide acetal (V) from the oxazoline and styrene oxide first, then homopolymerize the bicylic compound using methyl tosylate as a cationic initiator to produce the desired alternating copolymer (VI):(DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE DAI); The synthesis of bicyclic amide acetals and some of its reactions have been also studied in detail.; NMR and IR spectroscopies were used for characterization of the prepared compounds and VPO was used to determine the molecular weights of the polymers.
机译：部分I.两性离子I，由喹核苷和4-（氯甲基）-苯甲酸一水合物制得的1-（（4-羧基苯基）甲基）-喹啉内盐在室温下稳定。一水合物在真空下在90℃时失去了水合水，形成了稳定的无水两性离子。水合物和无水两性离子的本体聚合均在170-260℃下进行。产生具有结构II的聚合物，其数均分子量在4,000至16,000g / mol的范围内。使用{dollar} sp1 {dollar} H，{dollar} sp {lcub} 1 3 {rcub} {dollar} C，2-D COZY NMR和FT-IR光谱仪鉴定结构I和II。聚合物II的分子量通过VPO确定，并且聚合物的热性质通过DSC和TGA评估。（图，表或图形省略...请参见DAI）；第二部分首次研究了2-取代-2-恶唑啉与氧化苯乙烯的交替共聚。使用的2-取代的2-恶唑啉是2-甲基-2-恶唑啉（MeOXA），2-叔丁基恶唑啉（t-BuOXA）和2-苯基-2-恶唑啉（PhOXA）。为了合成恶唑啉和氧化苯乙烯的交替共聚物，聚（2-苯基-4-链烷酰基-1-氧杂-4-氮杂己烷二基）（VI），使用了两种不同的方法：方法1-直接共聚合2 -恶唑啉和氧化苯乙烯。在这种方法中，涉及到氧化苯乙烯的均聚以及恶唑啉和氧化苯乙烯的共聚。方法2-首先由恶唑啉和氧化苯乙烯合成双环酰胺缩醛（V），然后使用甲苯磺酸甲酯作为阳离子引发剂均聚双环化合物，以生成所需的交替共聚物（VI）:( DIAGRAM，TABLE或GRAPHIC OMITTED。 ..请参阅DAI）;还已经详细研究了双环酰胺缩醛的合成及其一些反应。 NMR和IR光谱法用于表征所制备的化合物，而VPO用于测定聚合物的分子量。

著录项

  • 作者

    Lu, Caixia.;

  • 作者单位

    City University of New York.;

  • 授予单位 City University of New York.;
  • 学科 Chemistry Polymer.; Chemistry Organic.
  • 学位 Ph.D.
  • 年度 1990
  • 页码 154 p.
  • 总页数 154
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化学（高聚物）;有机化学;
  • 关键词

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