{"title":"La2O3掺杂再生PS-PVC/PCL三元共混复合材料的合成、表征、光学和屏蔽性能","authors":"Ecem Özen Öner, Cengiz Tatar, Mediha Kök","doi":"10.1007/s10924-025-03575-8","DOIUrl":null,"url":null,"abstract":"<div><p>The oxide compound of lanthanum (La<sub>2</sub>O<sub>3</sub>), one of the rare earth elements, is one of the attractive materials with its p-type semiconductor properties and its radiation protection feature due to its high atomic number. In this study, smart composites were produced by doping La<sub>2</sub>O<sub>3</sub> into a ternary blend of polycaprolactone (PCL), known as a smart polymer, with high-consumption polystyrene and polyvinyl chloride wastes and it was aimed to investigate the use of the produced composites as waste utilization, electronic applications and radiation shielding materials. For this purpose, composites with different La<sub>2</sub>O<sub>3</sub> contents were produced by solution method. The change in the crystal structure of the produced polymeric composites was determined by XRD (x-ray diffraction) measurements and it was determined that the crystal properties of the polymeric composite increased with increasing La<sub>2</sub>O<sub>3</sub> content. As a result of the analysis of the thermal properties of the composites, it was determined that the mass loss in the polymeric blend caused extra mass loss with the addition of La<sub>2</sub>O<sub>3</sub> and the remaining mass loss increased. Evaluation of the Ultraviolet (UV) measurements of the produced composites revealed that the band energy value decreased from 4.02 eV to 3.89 eV. It was found to provide better results than polymeric composites with several high atomic number oxides when the results of gamma radiation shielding property measurements were analyzed.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 6","pages":"2920 - 2930"},"PeriodicalIF":4.7000,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-025-03575-8.pdf","citationCount":"0","resultStr":"{\"title\":\"Synthesis, Characterization, Optical and Gamma Shielding Properties of La2O3 Doped Recycled PS-PVC/PCL Ternary Blend Composites\",\"authors\":\"Ecem Özen Öner, Cengiz Tatar, Mediha Kök\",\"doi\":\"10.1007/s10924-025-03575-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The oxide compound of lanthanum (La<sub>2</sub>O<sub>3</sub>), one of the rare earth elements, is one of the attractive materials with its p-type semiconductor properties and its radiation protection feature due to its high atomic number. In this study, smart composites were produced by doping La<sub>2</sub>O<sub>3</sub> into a ternary blend of polycaprolactone (PCL), known as a smart polymer, with high-consumption polystyrene and polyvinyl chloride wastes and it was aimed to investigate the use of the produced composites as waste utilization, electronic applications and radiation shielding materials. For this purpose, composites with different La<sub>2</sub>O<sub>3</sub> contents were produced by solution method. The change in the crystal structure of the produced polymeric composites was determined by XRD (x-ray diffraction) measurements and it was determined that the crystal properties of the polymeric composite increased with increasing La<sub>2</sub>O<sub>3</sub> content. As a result of the analysis of the thermal properties of the composites, it was determined that the mass loss in the polymeric blend caused extra mass loss with the addition of La<sub>2</sub>O<sub>3</sub> and the remaining mass loss increased. Evaluation of the Ultraviolet (UV) measurements of the produced composites revealed that the band energy value decreased from 4.02 eV to 3.89 eV. It was found to provide better results than polymeric composites with several high atomic number oxides when the results of gamma radiation shielding property measurements were analyzed.</p></div>\",\"PeriodicalId\":659,\"journal\":{\"name\":\"Journal of Polymers and the Environment\",\"volume\":\"33 6\",\"pages\":\"2920 - 2930\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2025-04-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s10924-025-03575-8.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Polymers and the Environment\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10924-025-03575-8\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymers and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10924-025-03575-8","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Synthesis, Characterization, Optical and Gamma Shielding Properties of La2O3 Doped Recycled PS-PVC/PCL Ternary Blend Composites
The oxide compound of lanthanum (La2O3), one of the rare earth elements, is one of the attractive materials with its p-type semiconductor properties and its radiation protection feature due to its high atomic number. In this study, smart composites were produced by doping La2O3 into a ternary blend of polycaprolactone (PCL), known as a smart polymer, with high-consumption polystyrene and polyvinyl chloride wastes and it was aimed to investigate the use of the produced composites as waste utilization, electronic applications and radiation shielding materials. For this purpose, composites with different La2O3 contents were produced by solution method. The change in the crystal structure of the produced polymeric composites was determined by XRD (x-ray diffraction) measurements and it was determined that the crystal properties of the polymeric composite increased with increasing La2O3 content. As a result of the analysis of the thermal properties of the composites, it was determined that the mass loss in the polymeric blend caused extra mass loss with the addition of La2O3 and the remaining mass loss increased. Evaluation of the Ultraviolet (UV) measurements of the produced composites revealed that the band energy value decreased from 4.02 eV to 3.89 eV. It was found to provide better results than polymeric composites with several high atomic number oxides when the results of gamma radiation shielding property measurements were analyzed.
期刊介绍：
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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