文章摘要
聚衣康酰对苯二胺的合成及表征
Synthesis and Characterization of Poly(p-phenyleneitaconamide)
  
DOI:10.16865/j.cnki.1000-7555.2018.06.002
中文关键词: 衣康酰氯  低温溶液缩聚法  聚衣康酰对苯二胺  热性能  力学性能
英文关键词: itaconyl chloride  low temperature solution polycondensation method  poly (p-phenyleneitaconamide)  thermal property  mechanical properties
基金项目:国家自然科学基金青年基金资助项目(21306094);山东省高等学校科技计划项目;省教育厅项目(J13LD15)
作者单位
王传兴, 王 旭, 魏 哲, 徐国敬, 曾雪琦 青岛科技大学 化工学院山东 青岛 266042 
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中文摘要:
      为研究一种性能更优越的新型聚酰胺材料,以衣康酰氯及对苯二胺为原料,采用低温溶液缩聚法制备出聚衣康酰对苯二胺(PPIA)。通过红外光谱和核磁共振确定了目标产物的分子结构;探究了PPIA的合成工艺,即原料的摩尔比、滴加时间、反应时间、反应温度对PPIA比浓对数黏度的影响。运用X射线衍射、热重分析和差示扫描量热分析研究了其结晶情况与热性能。结果表明,衣康酰氯与对苯二胺的摩尔比为1.05∶1,滴加时间为60 min,反应时间60 min,反应温度-5 ℃时,得到的产物比浓对数黏度(η)最大,即相对分子质量最大,η能达到1.6 dL/g。通过XRD表明低温下制备的PPIA具有更好的晶型结构;通过DSC和TGA可知PPIA具有良好的热稳定性能;通过拉伸强度和弯曲强度的测定可知PPIA具有较好的力学性能。
英文摘要:
      Polyamide (PA), as a kind of common engineering plastics, was widely used in production and life of people. Therefore, studying a new type of polyamide material with better performance has great application prospects. Poly (p-phenyleneitaconamide) (PPIA) was prepared using P-phenylenediamine and itaconyl chloride as raw material by low temperature solution polycondensation method. The molecular structure of product was characterized by FT-IR and 1H-NMR, which confirmed the molecular structure of the target product. And then, the effect of the mole ratio of raw materials, dropping time, reaction time, reaction temperature on inherent viscosity of PPIA was systematically studied. The product was also characterized for their thermal stability and crystallization through TGA, DSC and XRD. The target polymer, which is -NH2 terminated PPIA, was identified by FT-IR and 1H-NMR. The experimental results show that under the condition of the mole ratio of itaconyl chloride and P-phenylenediamine 1.05∶1, dropping time 60 min, the reaction time 60 min, the reaction temperature -5 ℃, the inherent viscosity of polymer reaches the maximum that is more than 1.6 dL/g. PPIA, which was prepared at low temperature, had better crystal structure according to XRD analysis; PPIA also shows better thermal stability by DSC and TGA. And PPIA has good mechanical properties through the determination of tensile strength and flexural strength.
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