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Updated: Jun 24, 2025

Calcium Carbonate Formation in the Presence of Biopolymeric Additives

Calcium Carbonate Formation in the Presence of Biopolymeric Additives

Published on: May 14, 2019

通过拉曼光谱法监测再生聚烯中的CaCO₃含量

Pixiang Wang¹, Dayne M Long¹, Ke Zhan²

¹Center for Materials and Manufacturing Sciences, Departments of Chemistry and Physics, Troy University, Troy, Alabama 36082, United States.

|June 10, 2024

概括

使用拉曼光谱的新二次回归方法准确地量化了回收聚烯 (rPP) 中的碳酸 (CaCO3). 这种技术改善了回收塑料的质量控制,并促进了有效的材料回收利用.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
聚合物科学聚合物科学

背景情况:

碳酸 (CaCO3) 是回收聚烯 (rPP) 中常见的污染物,影响材料性能.
准确量化CaCO3对于确保rPP的质量和可用性至关重要.

研究的目的:

开发一种快速,准确和方便的方法来确定rPP中的CaCO3含量.
为了比较不同的光谱预处理方法和回归模型对CaCO3量化的有效性.

主要方法:

拉曼光谱法用于分析rPP中的CaCO3.
部分最小平方 (PLS) 回归模型是通过各种光谱预处理 (MSC,SNV,光滑,第一个导数) 构建和优化.
使用特征性的拉曼峰强度比率进行了线性和二次多项式回归.

主要成果:

最优的PLS模型实现了R2 = 0.9735和RMSEP = 2.7786重量% CaCO3.
一个二次回归模型证明了R2 = 0.9926和RMSEP = 1.6999重量% CaCO3.3的优异性能.
二级模型证明在实际回收的PP样本中量化CaCO3的准确性和可靠性更高.

结论:

使用拉曼峰强度比率的二次回归提供了一个非常准确和可靠的方法,用于在rPP中量化CaCO3.
观察到的二次关系与CaCO3和PP之间的密度差异有关.
这项研究支持改善质量控制,并促进聚烯材料的有效回收.

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