Cross-linking, cellulosic

Extra-cellular structures Especially Zn, Cu, Ca and sulfated sugars (cross-linked celluloses and proteins)... [Pg.383]

By using labelled, specific cross-linking agents in a polymer it is possible to count the number of cross-links introduced. Bishop (63) has used labelled di-acid chlorides (oxalyl, pimelyl and dodecandioyl) to cross-link cellulose acetate monofilaments (Reaction 6). He also used a tracer technique to correct for side chain formation (Reaction 7). [Pg.138]

Cytopore Cross-linked cellulose with DEAE groups GE Healthcare... [Pg.230]

Sartobind Sartorius, Goettingen, Germany Flat sheet (syringe, disk) cylindrical Regenerated cross-linked cellulose IEX AF epoxy aldehyde IMAC 31... [Pg.455]

CHROMATOGRAPHIC DATA OBTAINED WITH THERMALLY INITIATED RADICALLY CROSS-LINKED CELLULOSE TRIS(4-METHYLBENZOATE) (REPRINTED FROM REF. 11641)... [Pg.368]

Sartobind, Vivapure Sartorius, Vivascience Flat sheets, disks Regenerated cross-linked cellulose lEX, AF, IMAC... [Pg.51]

Formaldehyde is an important constituent of many textile finishes, especially finishes for cellulosic textiles. As the main chemical route to cross-linking cellulose, formaldehyde or a reactant made from formaldehyde is found in a variety of finishes, ranging from durable press agents to water repellents. [Pg.111]

Cross-linked cellulose based adsorbent beads have been under development at University Department of Chemical Technology (UDCT), Mumbai, and IIT, Delhi for use in expanded bed chromatography. Properties of the beads are claimed to be equivalent or even superior to the imported products. Purification protocols for expanded bed chromatography using cellulose beads for several enzymes are being developed. [Pg.118]

The simplest compound which cross-links cellulose is formaldehyde, and the literature relating to the interactions which take place between these materials has been thoroughly reviewed. ... [Pg.241]

Hemicelluloses (polysaccharides composed primarily of xylose and mannose) are much shorter in length than cellulose and are extensively branched these species may act to cross-link cellulose and other polymers, and also form the amorphous matrix of the interfibrillar space, in which cellulose microfibrils are embedded. Pectins are jelly-like, acidic polymers composed... [Pg.62]

NMR) with cellulose and are probably partially trapped within cellulose ribbons (as judged by the requirement for strong alkali to release them). High molecular weight xyloglucans are able to extensively cross-link cellulose ribbons.6... [Pg.42]

Xyloglucan. When xyloglucan molecular weights are high enough to extensively cross-link cellulose, uniaxial tensile stiffness is reduced and extensibility... [Pg.44]

Beaded cellulose has been tested as a more hydrophilic support [168,169]. Although Merrifield [1] found beaded cellulose unsuitable for solid-phase synthesis, the Perloza beaded cellulose has shown promising results as a solid support. Perloza [168,169] is a beaded, non-cross-linked cellulose support that has adequate mechanical properties for the synthesis of small peptides by either batch or continuous-flow methods. It has good solvation properties in a wide variety of solvents including water, dioxane, DMF, dimethyl sulfoxide (DMSO), DCM, and THE Perloza must be maintained in a solvent swollen state at all times, as upon drying it will not reswell to its original volume. [Pg.63]

The use of cross-linking reactions to vary the molecular parameters of polysaccharides without causing major alterations in their chemical properties has now found many applications of industrial importance. Of particular significance are cross-linked celluloses and starches, and the preparation and properties of many cross-linked celluloses have been... [Pg.353]

Formaldehyde cross-linking is used extensively on a commercial basis, and the pore structures of formaldehyde-cottons have been characterized. Formaldehyde cross-linked cellulose appears to have some application as a medium for gel filtration of carbohydrates, and an Escherichia coli lipopolysaccharide cross-linked with glutaraldehyde has been used in the isolation of anti-polysaccharide antibodies. ... [Pg.356]

Preparative Size Exclusion matrices are either cross-linked cellulose, agarose or dextranes, or hydrophilic polymers. Table 3.34 lists the most common sorbents with their fractionation range and pH-stability. [Pg.181]

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