Investigation of the Influence of UV-Irradiation on Thermal Stability of Binary Systems on the Basis of Polyethylene Glycol Fumarate with Some Vinyl Monomers

Eurasian Journal of Analytical Chemistry Pub Date : 2023-01-01 DOI:10.31489/2959-0663/2-23-11

G. Burkeyeva, A. Kovaleva, Y. Tazhbayev, Zhansaya M. Ibrayeva, L. Zhaparova, Diyara R. Meiramova, J. Plocek

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Abstract

This work is devoted to the investigation of continuous exposure to UV-irradiation on thermal stability of polymeric base of sealants. The copolymers of polyethylene glycol fumarate with acrylic and methacrylic ac-ids, and acrylamide of the composition of “unsaturated polyester : vinyl monomer” ~35:65 mass.% (corre-spondingly) were chosen as the polymer base. The samples were analyzed on microscope to the presence of microcracks as a result of exposure to UV-irradiation on them. The studied samples were evaluated visually on color change and the appearance of turbidity. Thermal stability of the studied polymeric base was deter-mined by establishing the temperature of the start of thermal deformation by thermogravimetry before and af-ter the process of UV-irradiation within 21 days. It was established that for the polymeric base with acryla-mide in its content the temperature of the start of thermal deformation had reduced after exposure to UV-irradiation. In contrary, for the polymeric bases with acrylic and methacrylic acids in their composition the abovesaid thermal index almost had not changed after affecting with UV-irradiation on the samples.

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紫外光照射对富马酸聚乙二醇与某些乙烯基单体二元体系热稳定性影响的研究

本文研究了连续紫外线照射对密封胶聚合物基热稳定性的影响。富马酸聚乙二醇与丙烯酸和甲基丙烯酸酯的共聚物，以及丙烯酰胺的组成为“不饱和聚酯:乙烯基单体”~35:65质量。选择%(相应的)作为聚合物基底。在显微镜下对样品进行了分析，发现由于紫外线照射，样品上存在微裂纹。对所研究的样品进行了颜色变化和浑浊外观的目测评估。通过用热重法测定紫外辐照前后21天内热变形开始的温度，来确定所研究的聚合物碱的热稳定性。结果表明，对于含有丙烯酰胺的聚合物碱，紫外照射后热变形起始温度降低。而对于以丙烯酸和甲基丙烯酸为主的聚合物碱，其热指数在紫外线照射后几乎没有变化。

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Eurasian Journal of Analytical Chemistry

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