PEI功能化中空介孔二氧化硅掺杂PLA复合膜的制备及性能研究

辛宇; 纪嘉琦; 王丽; 侯景魁; 宋立新; 王元霞; 李先亮

doi:10.15925/j.cnki.issn1005-3360.2025.02.017

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塑料科技 ›› 2025, Vol. 53 ›› Issue (02) : 91-96. DOI: 10.15925/j.cnki.issn1005-3360.2025.02.017

生物与降解材料

PEI功能化中空介孔二氧化硅掺杂PLA复合膜的制备及性能研究

辛宇 ¹^,² ,
纪嘉琦 ¹^,² ,
王丽 ³ ,
侯景魁 ¹^,² ,
宋立新 ¹^,² ,
王元霞 ¹^,² ,
李先亮 ¹^,²^,³^,^*

作者信息 +

Preparation and Performance Study of PLA Composite Films Doped with PEI-functionalized Hollow Mesoporous Silica

XIN Yu ¹^,² ,
JI Jiaqi ¹^,² ,
WANG Li ³ ,
HOU Jingkui ¹^,² ,
SONG Lixin ¹^,² ,
WANG Yuanxia ¹^,² ,
LI Xianliang ¹^,²^,³^,^*

Author information +

History +

摘要

聚乳酸（PLA）是一种生物可降解聚合物，具有良好的生物相容性和生物可降解性，但其延展性差、力学性能差等缺点限制其应用范围。因此，制备聚乙烯亚胺（PEI）改性的树突状中空介孔二氧化硅微球（PEI-HMSN），通过溶液浇铸法掺杂到PLA基体中，制备复合膜PLA/PEI-HMSN，详细研究复合膜的热力学性能、光学性能和疏水性能。结果表明：PEI-HMSN能够较为均匀地分散在PLA基体中，PLA/PEI-HMSN复合膜的断裂伸长率和拉伸强度得到提高，疏水性有所提高。经PEI改性的HMSN对PLA膜的性能有提升作用，为PLA在包装领域的应用提供实验依据。

Abstract

Polylactic acid (PLA) is a biodegradable polymer with good biocompatibility and biodegradability, but its poor ductility, poor air tightness and other shortcomings limit its application scope. Therefore, polyethyleneimine (PEI) modified dendritic hollow mesoporous silica microspheres (PEI-HMSN) were prepared and doped into PLA matrix by solution pouring method to prepare a composite film (PLA/PEI-HMSN). The effects of thermal, optical and hydrophobic properties of composite films were studied in detail. The results showed that PEI-HMSN can be uniformly dispersed in PLA matrix, and the elongation at break and tensile strength of PLA/PEI-HMSN composite film were improved. The hydrophobicity of PLA/PEI-HMSN composite film was improved. The PEI modified HMSN can improve the performance of PLA film, which provides an experimental basis for the application of PLA in packaging field.

关键词

聚乳酸 / 二氧化硅 / 中空结构 / 聚乙烯亚胺 / 复合膜

Key words

PLA / Silica dioxide / Hollow structure / Polyethyleneimine / Composite film

中图分类号

TQ323.4 / TQ327.9

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辛宇 , 纪嘉琦 , 王丽 , 等. PEI功能化中空介孔二氧化硅掺杂PLA复合膜的制备及性能研究. 塑料科技. 2025, 53(02): 91-96 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.02.017

XIN Yu, JI Jiaqi, WANG Li, et al. Preparation and Performance Study of PLA Composite Films Doped with PEI-functionalized Hollow Mesoporous Silica[J]. Plastics Science and Technology. 2025, 53(02): 91-96 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.02.017

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基金

国家自然科学基金(22005203)

辽宁省教育厅面上项目(LJKZ0454)

沈阳先进涂层材料产业技术研究院项目(2021210101002264)

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Received	Published
2024-04-03	2025-02-25
Issue Date
2025-04-17

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