D. Selikane, T. Gumede, Katekani Shingange, T. Malevu, Mbongeni Ngwenya, Fisokuhle Kumalo
{"title":"聚己内酯/秋海棠纤维素复合材料的表征:结构、热和机械分析","authors":"D. Selikane, T. Gumede, Katekani Shingange, T. Malevu, Mbongeni Ngwenya, Fisokuhle Kumalo","doi":"10.4028/p-pt5csd","DOIUrl":null,"url":null,"abstract":"This study presents a comprehensive investigation into the preparation and characterization of PCL/EA cellulose composites. The Fourier-transform infrared (FTIR) spectroscopy results confirm the successful composite fabrication, indicating the absence of chemical reactions during melt-compounding. Scanning electron microscopy (SEM) revealed distinct morphologies, with PCL forming a continuous phase and EA cellulose exhibiting a fibrous network. Despite successful embedding of EA cellulose fibers in the composite, fractured surfaces indicated poor interfacial interaction, potentially leading to fiber pull out. Thermogravimetric analysis (TGA) revealed enhanced thermal stability in the composites, while differential scanning calorimetry (DSC) indicated minimal impact on PCL melting behavior. X-ray diffraction analysis (XRD) further demonstrated enhanced crystallinity in the composites, highlighting increased order in PCL crystals. Mechanical testing revealed a modest increase in stiffness attributed to the rigid cellulose fibers. However, a decrease in yield strength, tensile strength, and elongation at break suggested reduced ductility and inferior mechanical properties, consistent with poor interfacial adhesion observed in SEM. Overall, this study contributes valuable insights into the structural, thermal, and mechanical characteristics of PCL/EA cellulose composites, offering a foundation for potential applications in various fields.","PeriodicalId":15161,"journal":{"name":"Journal of Biomimetics, Biomaterials and Biomedical Engineering","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Characterization of Polycaprolactone/Eucomis autumnalis Cellulose Composite: Structural, Thermal, and Mechanical Analysis\",\"authors\":\"D. Selikane, T. Gumede, Katekani Shingange, T. Malevu, Mbongeni Ngwenya, Fisokuhle Kumalo\",\"doi\":\"10.4028/p-pt5csd\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study presents a comprehensive investigation into the preparation and characterization of PCL/EA cellulose composites. The Fourier-transform infrared (FTIR) spectroscopy results confirm the successful composite fabrication, indicating the absence of chemical reactions during melt-compounding. Scanning electron microscopy (SEM) revealed distinct morphologies, with PCL forming a continuous phase and EA cellulose exhibiting a fibrous network. Despite successful embedding of EA cellulose fibers in the composite, fractured surfaces indicated poor interfacial interaction, potentially leading to fiber pull out. Thermogravimetric analysis (TGA) revealed enhanced thermal stability in the composites, while differential scanning calorimetry (DSC) indicated minimal impact on PCL melting behavior. X-ray diffraction analysis (XRD) further demonstrated enhanced crystallinity in the composites, highlighting increased order in PCL crystals. Mechanical testing revealed a modest increase in stiffness attributed to the rigid cellulose fibers. However, a decrease in yield strength, tensile strength, and elongation at break suggested reduced ductility and inferior mechanical properties, consistent with poor interfacial adhesion observed in SEM. Overall, this study contributes valuable insights into the structural, thermal, and mechanical characteristics of PCL/EA cellulose composites, offering a foundation for potential applications in various fields.\",\"PeriodicalId\":15161,\"journal\":{\"name\":\"Journal of Biomimetics, Biomaterials and Biomedical Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2024-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Biomimetics, Biomaterials and Biomedical Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4028/p-pt5csd\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, BIOMEDICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Biomimetics, Biomaterials and Biomedical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4028/p-pt5csd","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, BIOMEDICAL","Score":null,"Total":0}
引用次数: 0
摘要
本研究全面考察了 PCL/EA 纤维素复合材料的制备和表征。傅立叶变换红外光谱(FTIR)结果证实了复合材料的成功制备,表明在熔融共混过程中没有发生化学反应。扫描电子显微镜(SEM)显示了不同的形态,PCL 形成连续相,而 EA 纤维素则呈现纤维状网络。尽管 EA 纤维素纤维成功地嵌入了复合材料中,但断裂的表面表明界面相互作用不良,可能导致纤维脱落。热重分析(TGA)表明复合材料的热稳定性增强,而差示扫描量热法(DSC)表明对 PCL 熔化行为的影响极小。X 射线衍射分析(XRD)进一步表明,复合材料的结晶度提高,PCL 晶体的有序性增强。机械测试表明,刚性纤维素纤维适度提高了刚度。然而,屈服强度、拉伸强度和断裂伸长率的降低表明延展性降低,机械性能变差,这与扫描电镜观察到的界面粘附性差是一致的。总之,这项研究对 PCL/EA 纤维素复合材料的结构、热和机械特性提出了宝贵的见解,为其在各个领域的潜在应用奠定了基础。
Characterization of Polycaprolactone/Eucomis autumnalis Cellulose Composite: Structural, Thermal, and Mechanical Analysis
This study presents a comprehensive investigation into the preparation and characterization of PCL/EA cellulose composites. The Fourier-transform infrared (FTIR) spectroscopy results confirm the successful composite fabrication, indicating the absence of chemical reactions during melt-compounding. Scanning electron microscopy (SEM) revealed distinct morphologies, with PCL forming a continuous phase and EA cellulose exhibiting a fibrous network. Despite successful embedding of EA cellulose fibers in the composite, fractured surfaces indicated poor interfacial interaction, potentially leading to fiber pull out. Thermogravimetric analysis (TGA) revealed enhanced thermal stability in the composites, while differential scanning calorimetry (DSC) indicated minimal impact on PCL melting behavior. X-ray diffraction analysis (XRD) further demonstrated enhanced crystallinity in the composites, highlighting increased order in PCL crystals. Mechanical testing revealed a modest increase in stiffness attributed to the rigid cellulose fibers. However, a decrease in yield strength, tensile strength, and elongation at break suggested reduced ductility and inferior mechanical properties, consistent with poor interfacial adhesion observed in SEM. Overall, this study contributes valuable insights into the structural, thermal, and mechanical characteristics of PCL/EA cellulose composites, offering a foundation for potential applications in various fields.