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A comparative study of cellulose nanofibrils disintegrated via multiple processing approaches

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WOS被引频次:81
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成果类型:
期刊论文
作者:
Qing, Yan;Sabo, Ronald;Zhu, J. Y.;Agarwal, Umesh;Cai, Zhiyong;Wu, Yiqiang
通讯作者:
Sabo, R
作者机构:
[Cai, Zhiyong; Zhu, J. Y.; Agarwal, Umesh; Qing, Yan; Sabo, Ronald] USDA Forest Service, Forest Products Laboratory, Madison, WI 53726-2398, United States
[Wu, Yiqiang; Qing, Yan] School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
通讯机构:
[Sabo, Ronald] US Forest Serv, USDA, Forest Prod Lab, Madison, WI 53726 USA.
语种:
英文
关键词:
Cellulose nanocrystal (CNC) - Cellulose nanofibrils - Cellulose nanofibrils (CNFs) - Chemical pretreatments - Degree of polymerization - Microfluidization - Morphological properties - Physical and mechanical properties
期刊:
Carbohydrate polymers
ISSN:
0144-8617
年:
2013
卷:
97
期:
1
页码:
226-234
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:化学;WOS学科类别:Chemistry, Applied;Chemistry, Organic;Polymer Science
入藏号:
WOS:000321167300033;EI:20134016812377;PMID:23769541
基金类别:
Agriculture and Food Research Initiative Grant from the USDA National Institute of Food and Agriculture [2011-67009-20056]; National "948" Project of China [2009-4-51]
机构署名:
本校为第一机构
院系归属:
材料科学与工程学院
摘要:
Various cellulose nanofibrils (CNFs) created by refining and microfluidization, in combination with enzymatic or 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidized pretreatment were compared. The morphological properties, degree of polymerization, and crystallinity for the obtained nanofibrils, as well as physical and mechanical properties of the corresponding films were evaluated. Compared to refining, intense microfluidization contributed greater separation of nanofibril bundles, which led to an enhancement of mechanical strength and transparency for the resultant film. The selected enzymatic pre-treatments produced shortened fibers due to preferential hydrolysis of amorphous cellulose and, in combination with mechanical treatments, resulted in short and stiff cellulose nanocrystal (CNC)-like materials. Despite films from these CNC-like fibrils having inferior tensile strength, their tensile modulus and transparency were significantly improved compared to CNFs prepared without pre-treatment. The unique fiber morphology and high crystallinity potentially offer a green and ecologically friendly alternative for the preparation of CNCs and CNFs as part of an integrated biorefinery approach. Published by Elsevier Ltd.
参考文献:
Agarwal UP, 2010, CELLULOSE, V17, P721, DOI 10.1007/s10570-010-9420-z
Agarwal U. P, 2012, J AGR FOOD CHEM, DOI DOI 10.1021/F304465K
Alemdar A, 2008, BIORESOURCE TECHNOL, V99, P1664, DOI 10.1016/j.biortech.2007.04.029
ALEXANDER WJ, 1957, IND ENG CHEM, V49, P1303, DOI 10.1021/ie50572a039
Araki J, 1998, COLLOID SURFACE A, V142, P75, DOI 10.1016/S0927-7757(98)00404-X

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