Details

Autor(en) / Beteiligte

• Yanagisawa, Masahiro
• Shibata, Izumi
• Isogai, Akira

Titel

SEC–MALLS analysis of cellulose using LiCl/1,3-dimethyl-2-imidazolidinone as an eluent

Ist Teil von

• Cellulose (London), 2004-06, Vol.11 (2), p.169-176

Ort / Verlag

Dordrecht: Springer Nature B.V

Erscheinungsjahr

2004

Quelle

springer (창간호~2014)

Beschreibungen/Notizen

• The lithium chloride/1,3-dimethyl-2-imidazolidinone (LiCl/DMI) solvent system for cellulose was adopted as a mobile phase of size-exclusion chromatographic (SEC) analysis of cellulose, and the applicability of this system was examined using multi-angle laser light scattering and 13C-NMR analysis. The results indicate that 8% (w/v) LiCl/DMI ID a true solvent for cellulose, and that cellulose molecules dissolving ID 1% (w/v) LiCl/DMI are separated orderly depending on their molecular mass (MM) or root-mean-square (RMS) radius by the SEC system. Practically, no aggregates were detected ID the dilute cellulose/LiCl/DMI solutions. Furthermore, high stability of cellulose/LiCl/DMI solutions has been demonstrated; only a few percent of decline ID average MM was observed even after storage for 6 months at room temperature. Relationships between RMS radius and MM for hardwood bleached kraft pulp ID 1% LiCl/DMI was estimated as the following equation: βgαβ0.59, corresponding to a Mark–Houwink–Sakurada exponent of 0.77.