Engineering cellulose nanopaper with water resistant, antibacterial, and improved barrier properties by impregnation of chitosan and the followed halogenation

被引:73
|
作者
Du, Haishun [1 ]
Parit, Mahesh [1 ]
Liu, Kun [2 ]
Zhang, Miaomiao [1 ]
Jiang, Zhihua [1 ]
Huang, Tung-Shi [3 ]
Zhang, Xinyu [1 ]
Si, Chuanling [2 ]
机构
[1] Auburn Univ, Dept Chem Engn, Auburn, AL 36849 USA
[2] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China
[3] Auburn Univ, Dept Poultry Sci, Auburn, AL 36849 USA
基金
中国国家自然科学基金;
关键词
Cellulose nanofibrils; Cellulose nanopaper; Chitosan; Water resistance; Antibacterial property; Barrier property; OPTICAL-PROPERTIES; FILMS; NANOFIBRILS; ACID; NANOCRYSTALS; BIOPOLYMERS;
D O I
10.1016/j.carbpol.2021.118372
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
This work demonstrated a facile and sustainable approach to functionalize cellulose nanopaper (CNP) by impregnation of chitosan (CS) and the followed halogenation. It was found that the tensile strength of the functionalized CNP (CNP/CS-Cl) was enhanced by 38.3% and 512.6% at dry and wet conditions, respectively. Meanwhile, the total transmittance (at 550 nm) of CNP/CS-Cl was increased from 75% of pure CNP to 85%, with 35% decrease in optical haze. Moreover, the CNP/CS-Cl exhibited significant enhancement in barrier properties. Importantly, part of the amino groups on CS were transformed into N-halamines during the halogenation process, which endowed the CNP/CS-Cl with excellent antibacterial performance against both S. aureus and E. coli with 100% bacterial reduction after 10 min of contact. Thus, this work provides a simple and efficient approach to functionalize CNP with water resistance, high transparency, excellent antibacterial and barrier properties, which will expand the potential applications of CNP.
引用
收藏
页数:12
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