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玉米淀粉-微纤化纤维素复合膜表面性质的比较研究

A Comparative Investigation of the Surface Properties of Corn-Starch-Microfibrillated Cellulose Composite Films.

作者信息

Żołek-Tryznowska Zuzanna, Bednarczyk Ewa, Tryznowski Mariusz, Kobiela Tomasz

机构信息

Faculty of Mechanical and Industrial Engineering, Warsaw University of Technology, Narbutta 85, 02-524 Warsaw, Poland.

Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-662 Warsaw, Poland.

出版信息

Materials (Basel). 2023 Apr 23;16(9):3320. doi: 10.3390/ma16093320.

DOI:10.3390/ma16093320
PMID:37176202
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10179309/
Abstract

Starch-based materials seem to be an excellent alternative for conventional plastics used in various applications. Microfibralted cellulose can be used to improve the surface properties of starch-based materials. This study aims to analyze the surface properties of starch-microfibrillated cellulose materials. The surface properties of films were evaluated by ATR-FTIR, surface roughness, water wettability, and surface free energy. The surface homogeneity between corn starch and microfibrillated cellulose (MFC) fibers was confirmed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Microscopic analyses of the film surfaces confirm good compatibility of starch and MFC. The addition of MFC increased the surface roughness and polarity of developed starch/MFC materials. The surface roughness parameter has increased from 1.44 ± 0.59 to 2.32 ± 1.13 for pure starch-based materials and starch/MFC material with the highest MFC content. The WCA contact angle has decreased from 70.3 ± 2.4 to 39.1 ± 1.0°, while the surface free energy is 46.2 ± 3.4 to 66.2 ± 1.5 mJ·m, respectively. The findings of this study present that surface structure starch/MFC films exhibit homogeneity, which would be helpful in the application of MFC/starch materials for biodegradable packaging purposes.

摘要

淀粉基材料似乎是各种应用中传统塑料的极佳替代品。微纤化纤维素可用于改善淀粉基材料的表面性能。本研究旨在分析淀粉-微纤化纤维素材料的表面性能。通过衰减全反射傅里叶变换红外光谱（ATR-FTIR）、表面粗糙度、水润湿性和表面自由能对薄膜的表面性能进行评估。通过扫描电子显微镜（SEM）和原子力显微镜（AFM）证实了玉米淀粉与微纤化纤维素（MFC）纤维之间的表面均匀性。薄膜表面的微观分析证实了淀粉与MFC具有良好的相容性。MFC的添加增加了所制备的淀粉/MFC材料的表面粗糙度和极性。对于纯淀粉基材料和MFC含量最高的淀粉/MFC材料，表面粗糙度参数从1.44±0.59增加到2.32±1.13。水接触角（WCA）从70.3±2.4°降至39.1±1.0°，而表面自由能分别从46.2±3.4增加到66.2±1.5 mJ·m²。本研究结果表明，表面结构的淀粉/MFC薄膜具有均匀性，这将有助于MFC/淀粉材料在生物可降解包装中的应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/96c3543420fb/materials-16-03320-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/580982813128/materials-16-03320-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/27df241a04ca/materials-16-03320-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/f0ccd6f80ae3/materials-16-03320-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/1f3d49ab4eb8/materials-16-03320-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/96c3543420fb/materials-16-03320-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/580982813128/materials-16-03320-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/27df241a04ca/materials-16-03320-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/f0ccd6f80ae3/materials-16-03320-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/1f3d49ab4eb8/materials-16-03320-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d6/10179309/96c3543420fb/materials-16-03320-g005.jpg

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