通过实时质谱仪 (TDPy-DART-MS) 的热溶解/热解直接分析对交联弹性体网络的表征
Calum Bochenek1, Chrys Wesdemiotis1
1Department of Chemistry, The University of Akron, Akron, Ohio 44325, United States.
Analytical chemistry
|September 9, 2025
概括
这项研究引入了一种快速的方法来分析轮胎部件,使用温和的热溶解与质谱学相结合. 它识别了不同轮胎部分的关键化学成分和聚合物.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 聚合物化学 聚合物化学
背景情况:
- 轮胎是由弹性体,填充剂和添加剂组成的复杂复合材料.
- 不同的轮胎组件具有不同的功能和材料组成.
- 描述这些部件对于理解轮胎性能和降解至关重要.
研究的目的:
- 开发一种快速而灵敏的方法来表征轮胎组件.
- 识别和区分各种轮胎部件的化学成分.
- 为了阐明不同轮胎部分的聚合物骨干成分.
主要方法:
- 温和的热脱吸/热解 (TDPy) 与实时质谱仪 (DART-MS) 的直接分析相结合.
- 对五个轮胎部件的分析:跑道,侧壁,内,车身层和珠子.
- 使用双重质谱 (MS/MS) 和离子流动性 (IM) 谱仪进行离子表征.
主要成果:
- 在低TDPy温度下识别的增塑剂 (例如,六乙氧酸盐).
- 在中/高温下检测到抗氧化剂 (C-PPD,6-PPD),抗氧化剂和加工辅助剂.
- 在大多数部件中确定了乙烯-丁烯寡合物作为主要聚合物,除了内部内中的聚异布烯.
结论:
- 对于轮胎组件的快速化学分析,TDPy-DART-MS是有效的.
- 在不同轮胎部件中观察到不同的化学配置和聚合物骨干.
- 该方法提供了关于轮胎材料组成的见解,这对于质量控制和研究至关重要.
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