Preparation and Characterization of Acetylated Nanocrystalline Cellulose-reinforced Polylactide Highly Regular Porous Films

被引：5
|
作者：
Xu, Mingcong [1 ]
Yang, Rue [2 ]
Huang, Qiongtao [2 ]
Zhao, Xin [3 ]
Ma, Chunhui [1 ]
Li, Wei [1 ,2 ]
Li, Jian [1 ]
Liu, Shouxin [1 ]
机构：
[1] Northeast Forestry Univ, Minist Educ, Key Lab Biobased Mat Sci & Technol, Hexing Rd 26, Harbin 150040, Heilongjiang, Peoples R China
[2] Yihua Lifestyle Technol Co Ltd, Postdoctoral Res Ctr, Shantou 515834, Peoples R China
[3] Qilu Univ Technol, Minist Educ Shandong Prov, Key Lab Pulp & Paper Sci & Technol, Jinan 250353, Shandong, Peoples R China
来源：
BIORESOURCES | 2018年 / 13卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Nanocrystalline cellulose; Acetylation; Polylactic acid; Highly regular porous film; THERMAL-PROPERTIES; PLA; DEGRADATION; COMPOSITES; NANOFIBERS; MORPHOLOGY; CHEMISTRY; BARRIER; ACID);
D O I：
10.15376/biores.13.4.8432-8443
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
Nanocrystalline cellulose was prepared from bleached softwood kraft pulp using acid hydrolysis. Acetylated nanocellulose (AcNCC) and polylactic acid (PLA) were mixed together at different proportions under certain humidity conditions using a miscible method to prepare highly regular porous AcNCC/PLA composite films. The composites were characterized using scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The PLA/Ac-NCC-4 showed a uniform pore diameter distribution with diameter of 1.0 mu m to 5.0 mu m. The mechanical properties and thermal stability of the PLA composites were improved with the addition of AcNCC. The pore structure was regular and well distributed. When the AcNCC loading was 4%, the tensile strength and Young's modulus of the composites were 2.07 and 2.41 times higher than that of the pure PLA, respectively. The composites also exhibited high visible light transmission.
引用
收藏
页码：8432 / 8443
页数：12
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