{"title":"深入分析 PHBV 纳米复合材料中纳米层添加剂引发的复杂相互作用","authors":"Pablo-Manuel Martínez-Rubio, María-Dolores Avilés, Ramón Pamies, Sergio-José Benítez-Benítez, Alejandro Arribas, Francisco-José Carrión-Vilches, María-Dolores Bermúdez","doi":"10.1002/mame.202400016","DOIUrl":null,"url":null,"abstract":"<p>New nanocomposites based on biopolymer poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) (PHBV) are processed via extrusion, using low content of calcined hydrotalcite (CHT) and cloisite 20A (C20A) as additives (3 wt%). The aim of this work is to characterize the thermal and viscoelastic response of the structures induced by the presence of the additives. Field-emission scanning electron microscopy and laser profilometry are utilized to analyze the effect of the additives on the surface finish of extrusion filaments, detecting a smoother surface induced by additives. A lower degradation temperature is observed via thermogravimetry for composite containing CHT (PHBV+3%CHT), while such a phenomenon is not present in composite with C20A (PHBV+3%C20A). An increase in crystallinity due to the nucleating effect of additives is measured via differential scanning calorimetry. The intercalation of the biopolymer in the layered structure of the additives is observed via X-ray diffraction, reflecting the effective interaction in the composite matrix. The viscoelastic behavior of the samples is evaluated by means of rheology and dynamic-mechanical analysis, showing a non-Newtonian behavior and an enhancement of the vitreous state response. All results converge to the conclusion that the incorporation of the additives induces the formation of long-term structures that present variable sensitivity to temperature and frequency.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 7","pages":""},"PeriodicalIF":4.2000,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400016","citationCount":"0","resultStr":"{\"title\":\"In-Depth Analysis of the Complex Interactions Induced by Nanolayered Additives in PHBV Nanocomposites\",\"authors\":\"Pablo-Manuel Martínez-Rubio, María-Dolores Avilés, Ramón Pamies, Sergio-José Benítez-Benítez, Alejandro Arribas, Francisco-José Carrión-Vilches, María-Dolores Bermúdez\",\"doi\":\"10.1002/mame.202400016\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>New nanocomposites based on biopolymer poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) (PHBV) are processed via extrusion, using low content of calcined hydrotalcite (CHT) and cloisite 20A (C20A) as additives (3 wt%). 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引用次数: 0
摘要
以生物聚合物聚(3-羟基丁酸-3-羟基戊酸)(PHBV)为基础,使用低含量的煅烧水滑石(CHT)和钙钛矿 20A(C20A)作为添加剂(3 wt%),通过挤压加工制成了新型纳米复合材料。这项工作的目的是描述添加剂的存在所引起的结构的热反应和粘弹性反应。利用场发射扫描电子显微镜和激光轮廓仪分析了添加剂对挤压丝表面光洁度的影响,发现添加剂使表面更加光滑。通过热重计观察到,含有 CHT 的复合材料(PHBV+3%CHT)的降解温度较低,而含有 C20A 的复合材料(PHBV+3%C20A)则没有这种现象。通过差示扫描量热法测量,添加剂的成核效应导致结晶度增加。通过 X 射线衍射观察到生物聚合物在添加剂的层状结构中插层,反映了复合材料基质中的有效相互作用。通过流变学和动态力学分析评估了样品的粘弹性行为,结果表明样品具有非牛顿特性,玻璃态响应增强。所有结果都得出结论,添加剂的加入会诱导形成长期结构,这种结构对温度和频率的敏感性各不相同。
In-Depth Analysis of the Complex Interactions Induced by Nanolayered Additives in PHBV Nanocomposites
New nanocomposites based on biopolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) are processed via extrusion, using low content of calcined hydrotalcite (CHT) and cloisite 20A (C20A) as additives (3 wt%). The aim of this work is to characterize the thermal and viscoelastic response of the structures induced by the presence of the additives. Field-emission scanning electron microscopy and laser profilometry are utilized to analyze the effect of the additives on the surface finish of extrusion filaments, detecting a smoother surface induced by additives. A lower degradation temperature is observed via thermogravimetry for composite containing CHT (PHBV+3%CHT), while such a phenomenon is not present in composite with C20A (PHBV+3%C20A). An increase in crystallinity due to the nucleating effect of additives is measured via differential scanning calorimetry. The intercalation of the biopolymer in the layered structure of the additives is observed via X-ray diffraction, reflecting the effective interaction in the composite matrix. The viscoelastic behavior of the samples is evaluated by means of rheology and dynamic-mechanical analysis, showing a non-Newtonian behavior and an enhancement of the vitreous state response. All results converge to the conclusion that the incorporation of the additives induces the formation of long-term structures that present variable sensitivity to temperature and frequency.
期刊介绍:
Macromolecular Materials and Engineering is the high-quality polymer science journal dedicated to the design, modification, characterization, processing and application of advanced polymeric materials, including membranes, sensors, sustainability, composites, fibers, foams, 3D printing, actuators as well as energy and electronic applications.
Macromolecular Materials and Engineering is among the top journals publishing original research in polymer science.
The journal presents strictly peer-reviewed Research Articles, Reviews, Perspectives and Comments.
ISSN: 1438-7492 (print). 1439-2054 (online).
Readership:Polymer scientists, chemists, physicists, materials scientists, engineers
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