Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation
The paper presents the results of the analysis of physical phenomena associated with the degradation processes of the surface layer of polymeric materials. During the interaction disturbance of ultraviolet radiation, atoms are knocked out of the polymer chains, thus breaking the macromolecules, whic...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2023-12-01
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| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/129657/PDF/AMM-2023-4-33-Kalwik.pdf |
| _version_ | 1797379893176041472 |
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| author | A. Kalwik P. Postawa |
| author_facet | A. Kalwik P. Postawa |
| author_sort | A. Kalwik |
| collection | DOAJ |
| description | The paper presents the results of the analysis of physical phenomena associated with the degradation processes of the surface layer of polymeric materials. During the interaction disturbance of ultraviolet radiation, atoms are knocked out of the polymer chains, thus breaking the macromolecules, which leads to the disturbance in the structural stability of the materials. The standardised test samples obtained using the injection moulding method were subjected to the degradation process in natural and accelerated conditions in the UV Test device. The degradation process in laboratory conditions was carried out during 750 hours with the use of lamps with a wavelength of 313 nanometers and an irradiation level of 0.76 W/m 2, which corresponds to a period of 2 years in natural conditions. Using of thermogravimetric TGA and differential scanning calorimetry DSC analysis, the influence of energy applied from lamps and the energy reaching the earth’s surface on the change of melting enthalpy ∆ Hm, quantitative index of the crystalline phase and the temperature of phase changes were determined. |
| first_indexed | 2024-03-08T20:29:37Z |
| format | Article |
| id | doaj.art-13d02cb3528d4b0796937959412d6c08 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-03-08T20:29:37Z |
| publishDate | 2023-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-13d02cb3528d4b0796937959412d6c082023-12-22T14:27:45ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092023-12-01vol. 68No 415191524https://doi.org/10.24425/amm.2023.146218Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm RadiationA. Kalwik0https://orcid.org/0000-0003-1636-5111P. Postawa1https://orcid.org/0000-0001-7654-2963Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Depa rtment of Technology and Automation, 19C Armii Krajowej Av., 42- 201 Czestochowa, PolandCzestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Depa rtment of Technology and Automation, 19C Armii Krajowej Av., 42- 201 Czestochowa, PolandThe paper presents the results of the analysis of physical phenomena associated with the degradation processes of the surface layer of polymeric materials. During the interaction disturbance of ultraviolet radiation, atoms are knocked out of the polymer chains, thus breaking the macromolecules, which leads to the disturbance in the structural stability of the materials. The standardised test samples obtained using the injection moulding method were subjected to the degradation process in natural and accelerated conditions in the UV Test device. The degradation process in laboratory conditions was carried out during 750 hours with the use of lamps with a wavelength of 313 nanometers and an irradiation level of 0.76 W/m 2, which corresponds to a period of 2 years in natural conditions. Using of thermogravimetric TGA and differential scanning calorimetry DSC analysis, the influence of energy applied from lamps and the energy reaching the earth’s surface on the change of melting enthalpy ∆ Hm, quantitative index of the crystalline phase and the temperature of phase changes were determined.https://journals.pan.pl/Content/129657/PDF/AMM-2023-4-33-Kalwik.pdfpoly(oxymethylene)natural weatheringuv ageingthermal analysis |
| spellingShingle | A. Kalwik P. Postawa Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation Archives of Metallurgy and Materials poly(oxymethylene) natural weathering uv ageing thermal analysis |
| title | Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation |
| title_full | Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation |
| title_fullStr | Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation |
| title_full_unstemmed | Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation |
| title_short | Analysis of Changes in the Physical Properties and Structure of Poly(Oxymethylene) After Ageing in Natural Conditions and Accelerated by UVB-313 nm Radiation |
| title_sort | analysis of changes in the physical properties and structure of poly oxymethylene after ageing in natural conditions and accelerated by uvb 313 nm radiation |
| topic | poly(oxymethylene) natural weathering uv ageing thermal analysis |
| url | https://journals.pan.pl/Content/129657/PDF/AMM-2023-4-33-Kalwik.pdf |
| work_keys_str_mv | AT akalwik analysisofchangesinthephysicalpropertiesandstructureofpolyoxymethyleneafterageinginnaturalconditionsandacceleratedbyuvb313nmradiation AT ppostawa analysisofchangesinthephysicalpropertiesandstructureofpolyoxymethyleneafterageinginnaturalconditionsandacceleratedbyuvb313nmradiation |