The fixation index reflects the percentage of the amino acids that react with the crosslinking agent
: the higher the value, the more complete the reaction (see Materials and Methods for the formula to calculate its value).
Previously published studies reported the use of sugars, such as glucose, as suitable gelatin crosslinking agents
. A possible reaction mechanism involves the reaction of the characteristic aldehyde groups of some sugar molecules with the free amino groups of gelatin molecules, resulting in the formation of an aminoglycoside bond, which can further react with another free amino group of gelatin molecules and give birth to a cross-linked structure, as shown in Fig.
The order of efficacy of crosslinking agents
in the approach of GAG stabilization followed by protein crosslinking was (EC + GA) > (EC + DS).
(1) The solution of polymer P, crosslinking agent
A, and coagulant B were mixed in accordance with the ratio of the experimental schemes and stirred evenly.
Ambient self-crosslinkable acrylic resin/protein composite emulsions can be prepared by copolymerizing a functional monomer AAEM with MA, BA and AA, and a certain amount of gelatin or casein is employed as a crosslinking agent
The fabric samples were treated in an aqueous bath containing 25, 50, 75 and 100 g/[dm.sup.3] crosslinking agent
and 5, 10, 15 and 20 g/[dm.sup.3] catalyst (magnesium chloride hexa-hydrate), respectively.
Fatty acid, polyalkylene polyamine and crosslinking agent
were provided by Shengli Chemical Co.
A novel natural-based superabsorbent composite polymer was prepared by graft copolymerization of acrylic acid onto gelatin backbones in the presence of a crosslinking agent
. The resultant superabsorbent composite had a large degree of water absorbency.
It turns out that the first crosslinking agent
has significant influence on the physicochemical properties of scaffolds proved by remarkable discrepancy between EDC-Ca[Cl.sub.2] and Ca[Cl.sub.2]-EDC group.
The product is commonly used as a sole binder in combination with suitable crosslinking agents
It is observed that hydrogel PG-FFAs exhibits lower C-O vibration intensity in comparison with hydrogels that have citric acid as crosslinking agent
. This result is due to citric acid structure, which has three carboxylic functional groups, and not all of them react in the crosslink reaction.
Chen et al developed a processable crosslinked polyethylene consisting of 100 parts by weight of polyethylene, 0.03 to 5 parts of crosslinking agent
, 0.03 to 5 parts crosslinking promoter and 0.01 to 1.5 parts free radical inhibitor.