{"title":"长期紫外线老化聚氯乙烯/氧化锌纳米复合材料的结构、热性能和寿命评估","authors":"Faiza Faiza, Abraiz Khattak","doi":"10.1007/s13726-024-01286-w","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>PVC-based nanocomposites with varying concentrations of zinc oxide (ZnO) nanoparticles are fabricated using the melt mixing technique and then subjected to compression molding to acquire desired shapes (circular) and thickness (1.5 mm). Conformational analysis is performed using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometry, and optical microscopy. The prepared samples are then exposed under UV light having an intensity of 5.11 mW/cm<sup>2</sup> for 5000 lab hours of aging. The effect of UV aging on the structural and thermal behavior of the nanocomposites is analyzed at every 1000 h. Structural degradation of more than 50% in the case of neat PVC has been observed to be reduced with the increase in filler concentration. The contact angle values for 2, 4 and 6 phr of PVC nanocomposites after 5000 h of aging are 69°, 93°, and 104° having hydrophobicity classes of HC3, HC2, and HC2, respectively. The detailed analysis to study the effect of UV aging on the thermal behavior of the nanocomposites is evaluated using differential scanning calorimetry in the temperature range of 60–220 °C. Finally, the life span of all the samples was calculated using statistical calculations and it was observed that PVC with 2 phr of ZnO showed a maximum lifetime of 17,750 lab hours whereas for PVC with 0 phr of ZnO 8693 lab hours were calculated.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural, thermal and life span estimation of long-term ultraviolet aged PVC/ZnO nanocomposite\",\"authors\":\"Faiza Faiza, Abraiz Khattak\",\"doi\":\"10.1007/s13726-024-01286-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>PVC-based nanocomposites with varying concentrations of zinc oxide (ZnO) nanoparticles are fabricated using the melt mixing technique and then subjected to compression molding to acquire desired shapes (circular) and thickness (1.5 mm). Conformational analysis is performed using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometry, and optical microscopy. The prepared samples are then exposed under UV light having an intensity of 5.11 mW/cm<sup>2</sup> for 5000 lab hours of aging. The effect of UV aging on the structural and thermal behavior of the nanocomposites is analyzed at every 1000 h. Structural degradation of more than 50% in the case of neat PVC has been observed to be reduced with the increase in filler concentration. The contact angle values for 2, 4 and 6 phr of PVC nanocomposites after 5000 h of aging are 69°, 93°, and 104° having hydrophobicity classes of HC3, HC2, and HC2, respectively. The detailed analysis to study the effect of UV aging on the thermal behavior of the nanocomposites is evaluated using differential scanning calorimetry in the temperature range of 60–220 °C. Finally, the life span of all the samples was calculated using statistical calculations and it was observed that PVC with 2 phr of ZnO showed a maximum lifetime of 17,750 lab hours whereas for PVC with 0 phr of ZnO 8693 lab hours were calculated.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical abstract</h3>\",\"PeriodicalId\":601,\"journal\":{\"name\":\"Iranian Polymer Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-04-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Iranian Polymer Journal\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s13726-024-01286-w\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Polymer Journal","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s13726-024-01286-w","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
Structural, thermal and life span estimation of long-term ultraviolet aged PVC/ZnO nanocomposite
Abstract
PVC-based nanocomposites with varying concentrations of zinc oxide (ZnO) nanoparticles are fabricated using the melt mixing technique and then subjected to compression molding to acquire desired shapes (circular) and thickness (1.5 mm). Conformational analysis is performed using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometry, and optical microscopy. The prepared samples are then exposed under UV light having an intensity of 5.11 mW/cm2 for 5000 lab hours of aging. The effect of UV aging on the structural and thermal behavior of the nanocomposites is analyzed at every 1000 h. Structural degradation of more than 50% in the case of neat PVC has been observed to be reduced with the increase in filler concentration. The contact angle values for 2, 4 and 6 phr of PVC nanocomposites after 5000 h of aging are 69°, 93°, and 104° having hydrophobicity classes of HC3, HC2, and HC2, respectively. The detailed analysis to study the effect of UV aging on the thermal behavior of the nanocomposites is evaluated using differential scanning calorimetry in the temperature range of 60–220 °C. Finally, the life span of all the samples was calculated using statistical calculations and it was observed that PVC with 2 phr of ZnO showed a maximum lifetime of 17,750 lab hours whereas for PVC with 0 phr of ZnO 8693 lab hours were calculated.
期刊介绍：
Iranian Polymer Journal, a monthly peer-reviewed international journal, provides a continuous forum for the dissemination of the original research and latest advances made in science and technology of polymers, covering diverse areas of polymer synthesis, characterization, polymer physics, rubber, plastics and composites, processing and engineering, biopolymers, drug delivery systems and natural polymers to meet specific applications. Also contributions from nano-related fields are regarded especially important for its versatility in modern scientific development.
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