Cellulosic nanowhiskers. Theory and application of light scattering from polydisperse spheroids in the Rayleigh-Gans-Debye regime

被引:52
作者
Braun, Birgit [1 ]
Dorgan, John R. [1 ]
Chandler, John P. [2 ]
机构
[1] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA
[2] Colorado Sch Mines, Dept Met & Mat Engn, Golden, CO 80401 USA
关键词
D O I
10.1021/bm7013137
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Mathematical treatment of light scattering within the Rayleigh-Gans-Debye limit for spheroids with polydispersity in both length and diameter is developed and experimentally tested using cellulosic nanowhiskers (CNW). Polydispersity indices are obtained by fitting the theoretical formfactor to experimental data. Good agreement is achieved using a polydispersity of 2.3 for the length, independent of the type of acid used. Diameter polydispersities are 2.1 and 3.0 for sulfuric and hydrochloric acids, respectively. These polydispersities allow the determination of average dimensions from the z-average mean-square radius (< S-2 >(z)) and the weight-average molecular weight (M.) easily obtained from Berry plots. For cotton linter hydrolyzed by hydrochloric acid, the average length and diameter are 244 and 22 nm. This compares to average length and diameter of 272 and 13 nm for sulfuric acid. This study establishes a new light-scattering methodology as a quick and robust tool for size characterization of polydisperse spheroidal nanoparticles.
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收藏
页码:1255 / 1263
页数:9
相关论文
共 47 条
[1]   Accuracy in multiangle light scattering measurements for molar mass and radius estimations. Model calculations and experiments [J].
Andersson, M ;
Wittgren, B ;
Wahlund, KG .
ANALYTICAL CHEMISTRY, 2003, 75 (16) :4279-4291
[2]   Plasticized starch/tunicin whiskers nanocomposites.: 1.: Structural analysis [J].
Anglès, MN ;
Dufresne, A .
MACROMOLECULES, 2000, 33 (22) :8344-8353
[3]   Plasticized starch/tunicin whiskers nanocomposite materials.: 2.: Mechanical behavior [J].
Anglès, MN ;
Dufresne, A .
MACROMOLECULES, 2001, 34 (09) :2921-2931
[4]  
[Anonymous], FARADAY SOC
[5]   Flow properties of microcrystalline cellulose suspension prepared by acid treatment of native cellulose [J].
Araki, J ;
Wada, M ;
Kuga, S ;
Okano, T .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1998, 142 (01) :75-82
[6]   MICROCRYSTALLINE CELLULOSE - OLDEST POLYMER FINDS NEW INDUSTRIAL USES [J].
BATTISTA, OA ;
SMITH, PA .
INDUSTRIAL AND ENGINEERING CHEMISTRY, 1962, 54 (09) :20-&
[7]   Effect of reaction conditions on the properties and behavior of wood cellulose nanocrystal suspensions [J].
Beck-Candanedo, S ;
Roman, M ;
Gray, DG .
BIOMACROMOLECULES, 2005, 6 (02) :1048-1054
[8]   Induced phase separation in low-ionic-strength cellulose nanocrystal suspensions containing high-molecular-weight blue dextrans [J].
Beck-Candanedo, Stephanie ;
Viet, David ;
Gray, Derek G. .
LANGMUIR, 2006, 22 (21) :8690-8695
[9]   Optimization of the isolation of nanocrystals from microcrystalline cellulose by acid hydrolysis [J].
Bondeson, D ;
Mathew, A ;
Oksman, K .
CELLULOSE, 2006, 13 (02) :171-180
[10]  
Chazeau L, 2000, J POLYM SCI POL PHYS, V38, P383, DOI 10.1002/(SICI)1099-0488(20000201)38:3<383::AID-POLB5>3.0.CO