版权说明 帮助中心
首页 > 成果 > 成果详情

Self-Assembling Behavior of Cellulose Nanoparticles during Freeze-Drying: Effect of Suspension Concentration, Particle Size, Crystal Structure, and Surface Charge

SCI-EEI
WOS被引频次:122
认领
导出
反馈
分享
QQ微信 微博
成果类型:
期刊论文
作者:
Jingquan Han;Chengjun Zhou;Yiqiang Wu;Fangyang Liu;Qinglin Wu
通讯作者:
Wu, Q.(qwu@agcenter.lsu.edu)
作者机构:
[Chengjun Zhou; Jingquan Han; Qinglin Wu] School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA 70803, United States
[Fangyang Liu] Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States
[Yiqiang Wu] College of Materials Science and Engineering, Central South Forestry University of Science and Technology, Changsha, China
通讯机构:
[Wu, QL] Louisiana State Univ AgCtr, Sch Renewable Nat Resources, Baton Rouge, LA 70803 USA.
语种:
英文
关键词:
Alkaline pretreatment - Cellulose nano-crystals - Cellulose nanofibers - Cellulose nanoparticles - Electrostatic repulsion - Liquid-crystalline suspensions - Self-assembled fibers - Suspension concentrations
期刊:
Biomacromolecules
ISSN:
1525-7797
年:
2013
卷:
14
期:
5
页码:
1529-1540
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:生物学与生物化学;WOS学科类别:Biochemistry & Molecular Biology;Chemistry, Organic;Polymer Science
入藏号:
WOS:000319034600032;EI:20132116350227
基金类别:
Louisiana Board of Regents [LEQSF-EPS(2013)-PFUND-318, (LEQSF(2010-13)-RD-B-01]; Chinese Scholarship Council (CSC) [2009660015]
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:
Cellulose nanocrystals and cellulose nanofibers with I and II crystalline allomorphs (designated as CNC I, CNC II, CNF I, and CNF II) were isolated from bleached wood fibers by alkaline pretreatment and acid hydrolysis. The effects of concentration, particle size, surface charge, and crystal structure on the lyophilization-induced self-assembly of cellulose particles in aqueous suspensions were studied. Within the concentration range of 0.5 to 1.0 wt %, cellulose particles self-organized into lamellar structured foam composed of aligned membrane layers with widths between 0.5 and 3 μm. At 0.05 wt %, CNC I, CNF I, CNC II, and CNF II self-assembled into oriented ultrafine fibers with mean diameters of 0.57, 1.02, 1.50, and 1.00 μm, respectively. The size of self-assembled fibers became larger when more hydroxyl groups and fewer sulfates (weaker electrostatic repulsion) were on cellulose surfaces. Possible formation mechanism was inferred from ice growth and interaction between cellulose nanoparticles in liquid-crystalline suspensions. ©2013 American Chemical Society.
参考文献:
Beck-Candanedo S, 2005, BIOMACROMOLECULES, V6, P1048, DOI 10.1021/bm049300p
Boluk Y, 2012, LANGMUIR, V28, P6114, DOI 10.1021/la2035449
Boluk Y, 2011, COLLOID SURFACE A, V377, P297, DOI 10.1016/j.colsurfa.2011.01.003
Bondeson D, 2006, CELLULOSE, V13, P171, DOI 10.1007/s10570-006-9061-4
Dash R, 2012, CARBOHYD POLYM, V88, P789, DOI 10.1016/j.carbpol.2011.12.035

反馈

验证码:
看不清楚,换一个
确定
取消

成果认领

标题:
用户 作者 通讯作者
请选择
请选择
确定
取消

提示

该栏目需要登录且有访问权限才可以访问

如果您有访问权限,请直接 登录访问

如果您没有访问权限,请联系管理员申请开通

管理员联系邮箱:yun@hnwdkj.com