利用分级结构层状黏土构建高阻隔性脂肪族聚酯复合材料

材料导报

2019, Vol. 33

Issue (Z2): 617-622

高分子与聚合物基复合材料

利用分级结构层状黏土构建高阻隔性脂肪族聚酯复合材料

姚进¹, 毛龙^1,2, 刘小超¹, 李知函¹

1 湖南工业大学先进包装材料与技术湖南省重点实验室,株洲 412007;
2 厦门理工学院福建省功能材料及应用重点实验室,厦门 361024

Construction of High Barrier Aliphatic Polyester Composites Based on HierarchicalLayered Clays

YAO Jin¹, MAO Long^1,2, LIU Xiaochao¹, LI Zhihan¹

1 Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007;
2 Fujian Provincial Key Laboratory of Functional Materials and Applications, Xiamen University of Technology, Xiamen 361024

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摘要以MgAl-CO₃ LDHs(P-LDHs)为原料,通过煅烧-水化法制备出较大比表面积的分级结构水滑石(H-LDHs),研究了不同的水化条件对H-LDHs微观形貌的影响;然后采用溶液浇筑法将H-LDHs与聚己内酯(PCL)共混制备出H-LDHs/PCL复合材料,研究了H-LDHs对H-LDHs/PCL复合材料结构和性能的影响。结果表明,在H-LDHs的表面出现了大量垂直排列的纳米片层,形成了多层次分级结构;H-LDHs的比表面积(146.6 m²/g)达到了P-LDHs的3.67倍。氧气程序升温脱附结果表明,H-LDHs与氧气之间存在较强的化学吸附。H-LDHs改善了P-LDHs对PCL基材力学性能的恶化,这是由于H-LDHs表面垂直分布的大量纳米片层与PCL基材紧密结合,增加了H-LDHs与PCL基材的界面作用面积。相比于纯PCL,H-LDHs/PCL复合材料的氧气渗透性降低了43.6%,通过这种分级结构的层状黏土来延长平行于气体渗透方向的路径,从而较大幅度提高气体的阻隔性能,具有较好的研究价值和应用潜力。

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关键词: 层状双羟基金属氧化物分级结构复合材料阻隔性能渗透路径

Abstract: In this paper, MgAl-CO₃ LDHs (P-LDHs) were used as precursor to prepare hierarchical LDHs (H-LDHs) with large specific surface area by calcination-rehydration method. The effect of different rehydration conditions on the micro-morphology of H-LDHs was studied. And H-LDHs/PCL composites were prepared by mixing H-LDHs with poly(ε-caprolactone) (PCL) by solution casting method. The effect of H-LDHs on the structure and properties of H-LDHs/PCL composites was also studied. The results showed that a large number of vertically aligned nano-sheets were formed on the surface of H-LDHs, forming a multi-level hierarchical structure. The specific surface area of H-LDHs (146.6 m²/g) was 3.67 times of that of P-LDHs. The results of oxygen temperature programmed desorption showed that there is strong chemisorption between H-LDHs and oxygen molecules. And H-LDHs improved the deterioration of mechanical properties of P-LDHs on PCL matrix. A large number of nano-layers vertically distributed on the surface of H-LDHs were closely combined with PCL matrix, and the interface area between H-LDHs and PCL matrix was increased. Compared with pure PCL, the oxygen permeability of H-LDHs/PCL composites decreased by 43.6%. The layered clay with this hierarchical structure can prolong the path parallel to the direction of gas permeation significantly, thus greatly improving the gas barrier properties. H-LDHs/PCL composites show good research value and application potential.

Key words: layered double hydroxides hierarchical structure composites barrier properties permeability path

出版日期: 2019-11-25 发布日期: 2019-11-25

ZTFLH:

TB332

基金资助: 国家自然科学基金(11872179);福建省科技计划项目(2018H6024);湖南省自然科学基金(2019JJ50132);厦门理工学院高层次人才科研启动项目(YKJ19008R)

通讯作者: maolong0412@163.com

作者简介: 姚进,2018年12月获湖南工业大学材料科学与工程专业博士学位。主要研究方向为减量包装结构与安全设计。围绕绿色全降解材料的快速制备及在包装中的应用问题,以天然植物纤维为原料制备纳米晶须和纳米纤丝,与生物质材料制备全降解型复合材料,通过研究复合材料的介观结构与物理性能间的关系,制得具有良好力学性能和阻隔性能的绿色包装材料。近年参与或主持了多项国家、省部级和校级研究课题,在国内外发表学术论文10余篇,申请国家发明专利6项,授权3项。
毛龙,厦门理工学院讲师,2018年6月获湖南工业大学材料科学与工程专业博士学位。主要从事层状黏土的结构设计和功能化,并将其应用于制备高性能可降解高分子包装材料,为实现复合高分子包装材料的高性能、绿色化和全降解性进行理论和实践探索。近年来参与或主持多项国家、省部级和企业科研课题的研究工作,在国内外学术期刊上发表学术论文15篇,其中SCI收录8篇,EI收录6篇,申请国家发明专利10余项,其中授权发明专利6项。

引用本文:

姚进, 毛龙, 刘小超, 李知函. 利用分级结构层状黏土构建高阻隔性脂肪族聚酯复合材料[J]. 材料导报, 2019, 33(Z2): 617-622.
YAO Jin, MAO Long, LIU Xiaochao, LI Zhihan. Construction of High Barrier Aliphatic Polyester Composites Based on HierarchicalLayered Clays. Materials Reports, 2019, 33(Z2): 617-622.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/IZ2/617

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