Polysaccharide Derivatives

CAS 39384-64-0 Trimethylsilylcellulose, Degree of substitution 2.5

Trimethylsilylcellulose (TMSC) of high degree of substitution (DS 2.5) soluble in solvents like tetrahydrofuran and toluene can be transferred into thin- and ultrathin cellulose films by spin-coating or Langmuir-Blodgett-technique.

Selected References:

Advanced Materials 8 (1996) 339
Journal of Colloid and Interface Science 358 (2011) 604
Soft Matter 8 (2012) 9807

Preparation of ultrathin cellulose films

CAS 9005-22-5 Cellulose sulfate (Sulfuric acid half ester of cellulose), sodium salt, Degree of substitution 1.40 -1.60

Structure of cellulose sulfate (schematic)

Water-soluble polyelectrolyte for symplex formation (polyelectrolyte complex) and various other applications. Cellulose sulfate of high viscosity in aqueous solution (2%) of at least 50 mPas (at 100s^-1) made form spruce sulfite pulp. Cellulose sulfate is also available made from microcrystalline cellulose.

Hollow capsules from cellulose sulfate and PolyDADMAC

Selected reference:

Macromolecular Bioscience 9 (2009) 343

Semi-Synthetic Sulfated Polysaccharides - Promising Materials for Biomedical Applications

In: Polysaccharides: Development, Properties and Applications, Ed. A. Tiwari, Nova Science Publishers, 2010, pp. 213-259

Regioselectively functionalized polysaccharide derivatives

Regioselectively functionalized polysaccharides can be prepared applying protecting group technique or using special reaction media that activate a certain hydroxyl group. These derivatives of polysaccharides are very valuable model compounds, yielding very well resolved NMR spectra, useful for calibration of analytical methods and evaluation of structure property relations, e.g.

CAS 9045-28-7, 2-mono-O-Acetyl starch, Degree of substitution about 1

Two-dimensional NMR of 2-mono-O-Acetyl starch

Selected references:

Cellulose 11 (2004) 255