Enhanced dispersion and properties of a two-component epoxy nanocomposite using surface modified cellulose nanocrystals

被引：55
作者：
Peng, Shane X. [1 ]
Shrestha, Shikha [1 ]
Yoo, Youngman [1 ]
Youngblood, Jeffrey P. [1 ]
机构：
[1] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA
来源：
POLYMER | 2017年 / 112卷
基金：
美国国家科学基金会;
关键词：
Nanocomposite; Cellulose nanocrystals; Epoxy; Surface modification; Mechanical properties; THERMOSET NANOCOMPOSITES; MECHANICAL-PROPERTIES; THERMAL-CONDUCTIVITY; COMPOSITES; PERFORMANCE; NANOFIBERS; FIBERS;
D O I：
10.1016/j.polymer.2017.02.016
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Epoxy nanocomposites reinforced with acetyl, hexanoyl, and dodecanoyl surface modified Cellulose Nanocrystals (CNC) were fabricated. Surface modified CNCs were dispersed in epoxy resin with a co-solvent. After complete removal of the co-solvent, a typical two component epoxy system was achieved where hardener was then added to cure the resin. Acetyl grafted CNC (CNC_a) and hexanoyl grafted CNC (CNC_h) both had good dispersion in cured epoxy as observed visually and through electron microscopy. Tensile modulus, tensile strength, and work of fracture of epoxy were improved with the addition of CNC_a and CNC_h. CNC_a reinforced epoxy had the highest increases in mechanical properties. Dodecanoyl grafted CNC (CNC_d) led to aggregation in the epoxy which led to insignificant changes in mechanical properties. The addition of CNC_a increased glass transition temperature (T-g) of epoxy while CNC_h and CNC_d led to T-g depression. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：359 / 368
页数：10
相关论文
共 57 条
[1]   Lignin-Based Electrospun Nanofibers Reinforced with Cellulose Nanocrystals [J].
Ago, Mariko ;
Okajima, Kunihiko ;
Jakes, Joseph E. ;
Park, Sunkyu ;
Rojas, Orlando J. .
BIOMACROMOLECULES, 2012, 13 (03) :918-926
[2]   Relationship between tensile properties and film formation kinetics of epoxy resin reinforced with nanofibrillated cellulose [J].
Al-Turaif, Hamad A. .
PROGRESS IN ORGANIC COATINGS, 2013, 76 (2-3) :477-481
[3]   Mechanical characterization of scalable cellulose nano-fiber based composites made using liquid composite molding process [J].
Barari, Bamdad ;
Ellingham, Thomas K. ;
Ghamhia, Issam I. ;
Pillai, Krishna M. ;
El-Hajjar, Rani ;
Turng, Lih-Sheng ;
Sabo, R. .
COMPOSITES PART B-ENGINEERING, 2016, 84 :277-284
[4]   The relationship between cellulose nanocrystal dispersion and strength [J].
Cao, Yizheng ;
Zavattieri, Pablo ;
Youngblood, Jeffrey ;
Moon, Robert ;
Weiss, Jason .
CONSTRUCTION AND BUILDING MATERIALS, 2016, 119 :71-79
[5]   The influence of cellulose nanocrystal additions on the performance of cement paste [J].
Cao, Yizheng ;
Zavaterri, Pablo ;
Youngblood, Jeff ;
Moon, Robert ;
Weiss, Jason .
CEMENT & CONCRETE COMPOSITES, 2015, 56 :73-83
[6]   Effects of Crystal Orientation on Cellulose Nanocrystals-Cellulose Acetate Nanocomposite Fibers Prepared by Dry Spinning [J].
Chen, Si ;
Schueneman, Greg ;
Pipes, R. Byron ;
Youngblood, Jeffrey ;
Moon, Robert J. .
BIOMACROMOLECULES, 2014, 15 (10) :3827-3835
[7]   What do we still need to understand to commercialize cellulose nanomaterials? [J].
Davis, Chelsea S. ;
Grolman, Danielle L. ;
Karim, Alamgir ;
Gilman, Jeffrey W. .
GREEN MATERIALS, 2015, 3 (03) :53-58
[8]   Extrusion and characterization of functionalized cellulose whiskers reinforced polyethylene nanocomposites [J].
de Menezes, Aparecido Junior ;
Siqueira, Gilberto ;
Curvelo, Antonio A. S. ;
Dufresne, Alain .
POLYMER, 2009, 50 (19) :4552-4563
[9]   Sisal cellulose whiskers reinforced polyvinyl acetate nanocomposites [J].
de Rodriguez, Nancy Lis Garcia ;
Thielemans, Wim ;
Dufresne, Alain .
CELLULOSE, 2006, 13 (03) :261-270
[10]   Thermal Conductivity in Nanostructured Films: From Single Cellulose Nanocrystals to Bulk Films [J].
Diaz, Jairo A. ;
Ye, Zhijiang ;
Wu, Xiawa ;
Moore, Arden L. ;
Moon, Robert J. ;
Martini, Ashlie ;
Boday, Dylan J. ;
Youngblood, Jeffrey P. .
BIOMACROMOLECULES, 2014, 15 (11) :4096-4101
123456