在逆相液态染色学中研究半晶体聚胺的异常保留行为
Jordy D Kruijswijk1, Stefan Wijker2, Harry J A Philipsen3
1Division of Bioanalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute of Molecular and Life Sciences, Vrije Universiteit Amsterdam, de Boelelaan 1105 1081, Amsterdam, HV, The Netherlands; Centre for Analytical Sciences Amsterdam (CASA), The Netherlands.
半晶体聚胺在逆相液态染色学 (RPLC) 中表现出复杂的化行为. 控制样品溶解是从聚胺如聚胺X (PAX) 中获得准确化学信息的关键.
科学领域:
- 聚合物化学 聚合物化学
- 分析化学 分析化学
- 染色体学 染色体学 是一种染色学.
背景情况:
- 聚胺 (PAs) 是具有多种应用的半晶体聚合物.
- 在分析技术中了解它们的行为,例如逆相液态染色学 (RPLC),对于材料的表征至关重要.
- 半晶体聚胺由于相异质性,可以表现出复杂的化配置.
研究的目的:
- 研究半晶体聚胺的RPLC化行为,特别是聚胺4,6 (PA46) 和聚胺X (PAX).
- 为了阐明半晶度对RPLC峰值配置文件的影响.
- 确定从聚胺RPLC分析中提取可靠化学信息的条件.
主要方法:
- 逆相液态染色学 (RPLC) 用于分析PA46和PAX.
- 尺寸排除色谱 (SEC) 用于分析RPLC分数.
- 差分扫描热度计 (DSC),X射线衍射 (XRD) 和静态光散射被用于材料特征.
- 云点测量评估了聚合物溶解度.
主要成果:
- 阿里法式PA46以单个宽峰的形式解.
- 部分芳香的PAX呈现出复杂的化特征,具有早期和晚期化分数,归因于无形和晶体相.
- 降低PAX结晶性降低了后期排泄分数,而低柱体温度导致单个PAX峰值.
- 固态分析证实了两种PA的半晶体性质.
结论:
- 聚胺的半晶性显著影响其RPLC化行为.
- PAX复杂的化特征与无形和晶体相的存在有关.
- 确保晶体相的完全溶解对于从半晶体聚胺的RPLC中获得有意义的化学信息至关重要.
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