Studies of thermal decomposition of poly(vinyl chloride) composition with cadmium yellow and stearic acid

IF 1.7 4区工程技术 Q4 POLYMER SCIENCE International Journal of Polymer Analysis and Characterization Pub Date : 2024-04-02 DOI:10.1080/1023666X.2024.2346857

Magdalena Tworek , Edwin Makarewicz , Iryna Shyychuk , Joanna Kowalik , Anna Zalewska , Jolanta Tomaszewska

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Abstract

The article presents research on the thermal decomposition of individual ingredients and compositions that are physical mixtures of emulsion poly(vinyl chloride) (PVC), cadmium yellow, and stearic acid. The results of the tests were TG, DTA, and DTG graphs. From their course, the initial decomposition temperatures, maximum decomposition rate, and final temperatures were determined, and changes in the mass of samples and the values of thermal effects were calculated. The influence of pigment and stearic acid on the thermal decomposition of PVC was investigated. Cadmium yellow, modified in an alkaline medium and containing hydroxyl groups, was also used for the tests. It was found that the presence of both pigment and stearic acid had a retarding effect on the initiation of thermal decomposition of PVC. The addition of CdS modified in an alkaline environment had a more or less similar effect on the initial decomposition temperature of PVC. Depending on the composition of the polymer and the value of the final temperature, different values of thermal effects and the amount of products formed were indicated.

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聚氯乙烯与镉黄和硬脂酸成分的热分解研究

文章介绍了对聚氯乙烯（PVC）乳液、镉黄和硬脂酸的单独成分和物理混合物的热分解研究。测试结果为 TG、DTA 和 DTG 图。根据其过程，确定了初始分解温度、最大分解率和最终温度，并计算了样品的质量变化和热效应值。研究了颜料和硬脂酸对聚氯乙烯热分解的影响。试验还使用了在碱性介质中改性并含有羟基的镉黄。结果发现，颜料和硬脂酸的存在对聚氯乙烯的热分解都有延缓作用。在碱性环境中添加改性 CdS 对 PVC 的初始分解温度也有或多或少的影响。根据聚合物成分和最终温度值的不同，热效应值和形成的产品数量也不同。

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来源期刊

International Journal of Polymer Analysis and Characterization 化学-高分子科学

CiteScore

3.50

自引率

5.30%

发文量

审稿时长

1.6 months

期刊介绍： The scope of the journal is to publish original contributions and reviews on studies, methodologies, instrumentation, and applications involving the analysis and characterization of polymers and polymeric-based materials, including synthetic polymers, blends, composites, fibers, coatings, supramolecular structures, polysaccharides, and biopolymers. The Journal will accept papers and review articles on the following topics and research areas involving fundamental and applied studies of polymer analysis and characterization: Characterization and analysis of new and existing polymers and polymeric-based materials. Design and evaluation of analytical instrumentation and physical testing equipment. Determination of molecular weight, size, conformation, branching, cross-linking, chemical structure, and sequence distribution. Using separation, spectroscopic, and scattering techniques. Surface characterization of polymeric materials. Measurement of solution and bulk properties and behavior of polymers. Studies involving structure-property-processing relationships, and polymer aging. Analysis of oligomeric materials. Analysis of polymer additives and decomposition products.