Molecular interactions in collagen and chitosan blends

Sionkowska, Alina; Wiśniewski, Marcin; Skopińska, Joanna; Kennedy, Craig J; Wess, Timothy James

doi:10.1016/s0142-9612(03)00595-7

Cited by 451 publications

(283 citation statements)

References 34 publications

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“…Further investigations involving electron spin resonance, spin trapping, solid state nuclear magnetic resonance and infrared spectroscopy are needed to elucidate the molecular mechanism underlying the bonding between chitosan films and tissue using green lasers. 35 The outcome of the pressure test is in agreement with the above results, as seen in Figures 5b and c; the burst pressure of the nanostructured adhesive (28.0 ± 5.2 kPa) was 26% higher than the flat adhesive when laser irradiated (20.8 ± 2.6 kPa; Po0.001, Bonferroni post-test, two-way ANOVA, n = 15). There was no statistical difference between the burst pressure of the nanostructured and flat adhesives without laser activation (2.2 ± 0.5 and 1.3 ± 0.3 kPa, respectively; P40.05, Bonferroni post-test, two-way ANOVA, n = 15).…”

Section: Gecko-inspired Bioadhesive Sj Frost Et Alsupporting

confidence: 88%

Gecko-inspired chitosan adhesive for tissue repair

et al. 2016

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The advent of nanotechnology has opened the possibility of fabricating nanoscopic pillars on the surface of polymeric films mimicking the Gecko's foot, in an attempt to increase their adhesive capabilities enhanced by van der Waals forces. However, these forces are considerably weakened in a wet physiological environment. To circumvent this loss in force, current biocompatible adhesives with nanopillars require complex multiple-step fabrication, including an extra layer of adhesive coating to stabilize tissue bonding under physiological conditions. In this report, we describe a simple one-step fabrication process of a single-layer chitosan film that has pillars with base diameter in the range of 100-600 nm and a height of~70 nm. The nanostructured adhesive is laser-bonded to tissue and does not require pillar coating to enhance bonding in water. In comparison with a 'flat' adhesive (without pillars), the nanostructured adhesive bonded significantly stronger to tissue under either stress or pressure. Atomic force spectroscopy also confirmed the superior bonding capability of the nanostructured adhesive. This study demonstrates a one-step fabrication technique to produce a monolayer gecko-inspired adhesive that is biocompatible and bonds effectively to tissue.

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Section: Gecko-inspired Bioadhesive Sj Frost Et Alsupporting

confidence: 88%

Gecko-inspired chitosan adhesive for tissue repair

et al. 2016

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“…2). The absorption bands around 1647 cm -1 , 1542 cm -1 , and 1244 cm -1 represented the amide I, II, and III bands of gelatin, respectively (Sionkowska et al 2004). The absorption band of a Schiff base is located at approximately 1620 cm -1 (Cai et al 2011), which is similar to that of the amide I band of gelatin.…”

Section: Characteristics Of Crosslinked Gelatinmentioning

confidence: 85%

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

You¹,

Sun²,

Cui³

et al. 2016

BioResources

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A type of novel retention aid, cross-linked gelatin, was prepared using lowgrade industrial gelatin as the raw material and glutaraldehyde as the crosslinking agent. The structure of cross-linked gelatin was characterized according to the crosslinking degree, isoelectric point, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy. The results indicated that the crosslinking reaction was successfully performed between the primary amine group of gelatin and the aldehyde group of glutaraldehyde, resulting in the formation of a Schiff base structure. The retention test showed that the addition of cross-linked gelatin remarkably improved the retention of filler. This effect was mainly attributed to the fact that cross-linked gelatin, with a high molecular weight and highly branched structure, exhibited favorable bridging flocculation and induced filler aggregation into the flocs, which were retained in the paper sheet. The drainage test showed that the cross-linked gelatin exhibited a poor drainage effect, which was attributed to the synergic effects of excellent hydrophilicity, film forming property, and sealing property.

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“…Adding hydrophobic non polar additives to cationic surfactant solutions is also found to increase the micellar growth [44,45]. There are many evidences for an entangled micellar phase in several aqueous cationic detergent systems in the presence of added salt [46][47][48][49]. The presences of neutral salts [50][51][52][53] showed a marked shift in phase transitions.…”

Section: Introductionmentioning

confidence: 95%