通过使用红外探测液体染色学解开乙烯 - 乙烯基聚合物中的共纳米分布
Jan-Hendrik Arndt1, Sampat Singh Bhati2, Manoela Ellwanger Cangussu3
1Division Plastics, Department Material Analysis and Characterization, Fraunhofer Institute for Structural Durability and System Reliability LBF, Schlossgartenstrasse 6, 64289 Darmstadt, Germany.
Journal of chromatography. A
|July 9, 2023
概括
先进的液态色谱技术精确地描述了复杂的多烯酸聚合物. 这种详细的分子分析为量身定制的应用提供了对它们的结构属性关系的关键见解.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 聚烯是重要的商业聚合物,因为它们具有适应性的微观结构和可访问的原料.
- 影响聚烯性能的关键分子特征包括摩尔质量分布 (MMD),共纳体类型,化学成分分布 (CCD) 和战术性分布 (TD).
研究的目的:
- 为了深入分析复杂的多烯酸聚合物的分子异质性.
- 为了充分描述这些聚合物的双变分子结构 (MMD x CCD).
主要方法:
- 高温凝透色谱 (HT-GPC) 与高温高性能液体色谱 (HT-HPLC) 结合在高温二维液体色谱 (HT 2D-LC) 设置中.
- 利用基于过器的红外探测来绘制甲基和碳基组分布与摩尔质量之间的地图.
- 使用多孔石墨碳 (PGC) 作为HT-HPLC中用于CCD分析的静止相.
主要成果:
- 成功分析了含有乙烯,乙烯酸乙烯和分支乙烯单体的复杂聚烯聚合物.
- 扩展了HT-GPC的能力,以确定甲基和碳基在摩尔质谱中的分布.
- 使用HT-HPLC获得了全面的CCD信息,并揭示了完整的MMD x CCD分布函数.
结论:
- HT 2D-LC是一种强大的技术,用于阐明聚烯酸聚合物的复杂分子结构.
- 综合的MMD x CCD分布函数对于理解双变分子结构和预测多烯特性至关重要.
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