Determination of the DS distribution of non-degraded sodium carboxymethyl cellulose by gradient chromatography.
Determination of the DS distribution of non-degraded sodium carboxymethyl cellulose by gradient chromatography.
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梯度色谱法测定未降解羧甲基纤维素钠的DS分布
DOI:
10.1016/j.carbpol.2013.06.066
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发表时间:
2013
影响因子:
11.2
通讯作者:
Wolfgang Radke
中科院分区:
文献类型:
--
作者:
Maryia Shakun;Thomas Heinze;Wolfgang Radke
Two series of sodium carboxymethyl celluloses (NaCMCs) derived from microcrystalline cellulose (Avicel samples, DP ∼ 160) and cotton linters (BWL samples, DP ∼ 1400) with average degrees of substitution in the range DS = 0.45–1.55 were analyzed by gradient liquid adsorption chromatography (gradient LAC) in order to determine their chemical composition distributions (DS distributions or 1st order heterogeneities). Clear separations of samples having different average DS values were achieved for both sample series, allowing determination of the DS distributions of the samples. A slight molar mass influence on the eluent composition at elution was observed. From the DS distributions the DS standard deviations were calculated and taken as a measure for the extent of chemical heterogeneity of the single samples. While no noticeable dependence of the chemical heterogeneity on average DS was observed for Avicels, the heterogeneity decreases with increasing average DS for BWLs.
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
P. Mischnick;Roland Adden
通讯作者:
Roland Adden
影响因子:
3.1
作者:
K. A. Oudhoff;F. A. Buijtenhuijs;P. Wijnen;P. Schoenmakers;W. Kok
通讯作者:
K. A. Oudhoff;F. A. Buijtenhuijs;P. Wijnen;P. Schoenmakers;W. Kok
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
U. Heinze;J. Schaller;T. Heinze;S. Horner;B. Saake;J. Puls
通讯作者:
J. Puls
影响因子:
11.2
作者:
M. Shakun;H. Maier;T. Heinze;P. Kilz;W. Radke
通讯作者:
M. Shakun;H. Maier;T. Heinze;P. Kilz;W. Radke
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
W. Tüting;G. Albrecht;B. Volkert;P. Mischnick
通讯作者:
P. Mischnick