Characterization of METHOCEL cellulose ethers by aqueous SEC with multiple detectors

被引：67

作者：

Keary, CM ^{[1
]}

机构：

[1] Dow Chem Co, Cellulos R&D, Larkin Lab, Midland, MI 48674 USA

来源：

CARBOHYDRATE POLYMERS | 2001年 / 45卷 / 03期

关键词：

methylcellulose; hydroxypropyl methylcellulose; aqueous size-exclusion chromatography; intrinsic viscosity; radius of gyration; molecular weight; Mark-Houwink-Sakurada; viscotek;

D O I：

10.1016/S0144-8617(00)00263-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 [应用化学];

摘要：

Initial evaluation of a multiple-detector, aqueous SEC technique has shown: . that it is capable of high precision and accuracy; . applicability to the analyses of METHOCEL cellulose ethers; . ability to generate consistent values of R-gw, IVw, (M) over bar (w), (M) over bar (N) and polydispersity; . ability to generate dependable Mark-Houwink-Sakurada parameters. Cellulose ethers in this study were commercial products, used 'as received', solutions were not dialyzed, corrections were not made for salt content ol moisture content and batches were not specially selected. The robustness, convenience and reproducibility of the technique are impressive. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：293 / 303

页数：11

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