{"title":"用于包装的 CdSe/聚乙烯醇纳米复合薄膜：热学、机械、光学和物理化学特性","authors":"Sandeep Singh, Sangeeta Garg, Amit D. Saran","doi":"10.1007/s13726-024-01320-x","DOIUrl":null,"url":null,"abstract":"<div><p>CdSe nanostructures, well-investigated for their optical properties, have been evaluated here as functional fillers in polyvinyl alcohol (PVA) films, for packaging applications. Polymer-nanocomposite films of PVA and CdSe nanoparticles (nanospheres and nanorods), were evaluated for their thermal, mechanical<b>,</b> optical and physico-chemical properties. Microemulsion-synthesized CdSe were loaded in PVA films by solution casting method. CdSe-PVA films were prepared at varying morphology (spherical to rod-like) of CdSe, by controlling the reaction time (0, 2, 4, 6 and 8 h) at 1% (by weight) loading. The effect of loading of CdSe was also studied at 0.1, 0.5, 1, 5, and 10% (by weight) for the reaction time of 4 h. CdSe nanoparticles were characterized by high-resolution transmission electron microscopy (HR-TEM) and X-ray diffractometry (XRD). The melting point and heat of fusion of CdSe-PVA films (for the reaction time of 4 h) exhibited the maximum values of 216.9 ± 0.73 °C and 6.78 ± 0.24 J/g, respectively, at 1% (by weight) of CdSe, as compared with 209.8 ± 0.52 °C and 3.76 ± 0.1 J/g for plain PVA film. The CdSe-PVA films with spherical CdSe showed the maximum enhancement of 118 and 87.4% for Young’s modulus (MPa) and modulus of toughness (MPa), respectively as compared with PVA films. With increasing load of CdSe, the CdSe-PVA films showed an increase in the two moduli with maximum enhancement of 124 and 57 at 10% (by weight) of CdSe, as compared with PVA films. The optical, colorimetric, chemical resistance, UV-hindrance, water content and antibacterial properties of CdSe-PVA films were also investigated.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 9","pages":"1257 - 1275"},"PeriodicalIF":2.4000,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CdSe/polyvinyl alcohol nanocomposite films for packaging: thermal, mechanical, optical and physico-chemical properties\",\"authors\":\"Sandeep Singh, Sangeeta Garg, Amit D. Saran\",\"doi\":\"10.1007/s13726-024-01320-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>CdSe nanostructures, well-investigated for their optical properties, have been evaluated here as functional fillers in polyvinyl alcohol (PVA) films, for packaging applications. Polymer-nanocomposite films of PVA and CdSe nanoparticles (nanospheres and nanorods), were evaluated for their thermal, mechanical<b>,</b> optical and physico-chemical properties. Microemulsion-synthesized CdSe were loaded in PVA films by solution casting method. CdSe-PVA films were prepared at varying morphology (spherical to rod-like) of CdSe, by controlling the reaction time (0, 2, 4, 6 and 8 h) at 1% (by weight) loading. The effect of loading of CdSe was also studied at 0.1, 0.5, 1, 5, and 10% (by weight) for the reaction time of 4 h. CdSe nanoparticles were characterized by high-resolution transmission electron microscopy (HR-TEM) and X-ray diffractometry (XRD). The melting point and heat of fusion of CdSe-PVA films (for the reaction time of 4 h) exhibited the maximum values of 216.9 ± 0.73 °C and 6.78 ± 0.24 J/g, respectively, at 1% (by weight) of CdSe, as compared with 209.8 ± 0.52 °C and 3.76 ± 0.1 J/g for plain PVA film. The CdSe-PVA films with spherical CdSe showed the maximum enhancement of 118 and 87.4% for Young’s modulus (MPa) and modulus of toughness (MPa), respectively as compared with PVA films. With increasing load of CdSe, the CdSe-PVA films showed an increase in the two moduli with maximum enhancement of 124 and 57 at 10% (by weight) of CdSe, as compared with PVA films. The optical, colorimetric, chemical resistance, UV-hindrance, water content and antibacterial properties of CdSe-PVA films were also investigated.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":601,\"journal\":{\"name\":\"Iranian Polymer Journal\",\"volume\":\"33 9\",\"pages\":\"1257 - 1275\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-05-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Iranian Polymer Journal\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13726-024-01320-x\",\"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://link.springer.com/article/10.1007/s13726-024-01320-x","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
CdSe/polyvinyl alcohol nanocomposite films for packaging: thermal, mechanical, optical and physico-chemical properties
CdSe nanostructures, well-investigated for their optical properties, have been evaluated here as functional fillers in polyvinyl alcohol (PVA) films, for packaging applications. Polymer-nanocomposite films of PVA and CdSe nanoparticles (nanospheres and nanorods), were evaluated for their thermal, mechanical, optical and physico-chemical properties. Microemulsion-synthesized CdSe were loaded in PVA films by solution casting method. CdSe-PVA films were prepared at varying morphology (spherical to rod-like) of CdSe, by controlling the reaction time (0, 2, 4, 6 and 8 h) at 1% (by weight) loading. The effect of loading of CdSe was also studied at 0.1, 0.5, 1, 5, and 10% (by weight) for the reaction time of 4 h. CdSe nanoparticles were characterized by high-resolution transmission electron microscopy (HR-TEM) and X-ray diffractometry (XRD). The melting point and heat of fusion of CdSe-PVA films (for the reaction time of 4 h) exhibited the maximum values of 216.9 ± 0.73 °C and 6.78 ± 0.24 J/g, respectively, at 1% (by weight) of CdSe, as compared with 209.8 ± 0.52 °C and 3.76 ± 0.1 J/g for plain PVA film. The CdSe-PVA films with spherical CdSe showed the maximum enhancement of 118 and 87.4% for Young’s modulus (MPa) and modulus of toughness (MPa), respectively as compared with PVA films. With increasing load of CdSe, the CdSe-PVA films showed an increase in the two moduli with maximum enhancement of 124 and 57 at 10% (by weight) of CdSe, as compared with PVA films. The optical, colorimetric, chemical resistance, UV-hindrance, water content and antibacterial properties of CdSe-PVA films were also investigated.
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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