• Proceedings of the PSK Conference
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• 2000.10a
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• pp.263.2-263.2
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• 2000

• Textile Coloration and Finishing
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• v.14 no.1
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• pp.18-26
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• 2002

Chitosan has reactive amino and hydroxyl groups which can be used to chemically alter its properties under the mild reaction conditions. Thus the cationization of Tencel with Chitosan is effective to modify the fabric. To investigate the modified properties of Tencel fabric, the tests were performed under the several finishing process with enzyme/glutaraldehyde/softener. The internal structure of Tencel which has the structure of cellulose II wasn't changed by enzyme, chitosan and crosslinking agent treatment and the thermal stability was improved by chitosan and crosslinking agent treatment. Wrinkle recovery angle under the dry condition increased highly until $0.1\textrm{mol}/\ell$ of glutaraldehyde concentration, and then decreased. Tensile strength of modified Tencel fabric decreased with increasing of weight loss, but it was improved more or less by chitosan, crosslinking agent and softener. Moisture regain was improved by enzyme and chitosan treatment. And antibacterial activity showed nearly 100% on Tencel fabric treated with 0.5% chitosan and adsorption of metal ion increased with increasing of chitosan concentration.

• Journal of Korean society of Dental Hygiene
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• v.1 no.2
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• pp.243-250
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• 2001

To evaluate the effect of disinfectants for Alginate impression, several commercially available disinfectants were tested to Alginate model contaminated by Methicillin resistant Staphylococcus aureus. Alginate specimens were artificially contaminated by Staphylococcus aureus and soaking in four commercially available disinfectants for 1, 5, 10 minutes and colonies were counted for each case. Significant reduction of bacterial colony counts was noted after soaking in 0.5% and 0.05% sodium hypochlorite and after soaking in 2% glutaraldehyde, but not after soaking in Hypochlorus add. Commercially available sodium hypochlorite and glutaraldehyde were found to be effective disinfectants for Alginate impression. But hypochlorus add was not adequate disinfectant.

• Applied Microscopy
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• v.24 no.2
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• pp.37-47
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• 1994

Using mouse tissue, we studied electron opacity effect of tannic acid for transmission electron microscopic staining. Tannic acid-glutaraldehyde in 0.1M phosphate buffer was used as a fixative. To compare with this we have tested another method consisting of heavy metal staining after treatment of tannic acid in sodium tetraborate (borax) on glutaraldehyde-fixed sections. We have achieved equally consistent electron opacity in both methods. The elastin, collagen, basal lamina of skin and gap junctions of the epithelial cells gave excellent results, while it was good for glycogen, cilia, and plasma. Also fat cells and lipid droplets gave good preservation when tannic acid was added in the fixative. However, prolonged fixation in tannic acid-added fixative was hazardous for further processing, i.e., sectioning problem and deep electron opacity background.

• Korean Journal of Food Science and Technology
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• v.20 no.4
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• pp.541-546
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• 1988

Optimum conditions for immobilization of aminoacylase on chitosan were investigated, and the results are summerized as follows: Optimum conditions for activation of chitosan were pH 6.0, 0.2% of glutaraldehyde, and 120 minutes of reaction time. Enzyme concentration and reaction time for immobilization of aminoacylase on the activated chitosan were 80mg/20ml, and 90 minutes, respectively, and the yield of activity of the immobilized enzyme was 42.6%.

• YAKHAK HOEJI
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• v.40 no.1
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• pp.72-77
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• 1996

Penicillin sensor was manufactured by immobillizing penicillinase with glutaraldehyde on the $H^+$-selective membrane based on PVC-COOH-TDDA. This membrane was not inter fered by $K^+$ ion in Pc-G potassium salt. When enzyme was immobilized with glutaraldehyde, the PVC-COOH matrix was more effective than PVC matrix. Calibration curve calculated from Nernst equation was not linear. But potential was relative to concentration of Pc-G. And maximal potentiometric velocity was also relative to concentration of Pc-G. Therefore, it may be applied to Michaelis-Menten equation. The penicillin sensor was useful for determination of Pc-G at concentration of 0.1~10mM level.

• Polymer(Korea)
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• v.38 no.5
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• pp.588-595
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• 2014

A semi-interpenetrating polymer network (semi-IPN) hydrogel composed of crosslinked chitosan and poly (acrylic acid-co-crotonic acid) was prepared in the presence of glutaraldehyde (GA) as a crosslinker. Fourier-transform infrared, thermogravimetric analysis and scanning electron microscopy were employed to confirm the structure of the semi-IPN hydrogel. The swelling capacity of hydrogel was shown to be affected by the monomers weight ratio, chitosan content, initiator and GA concentrations. The results also indicated that the semi-IPN hydrogel had different swelling capacity at various pHs. Additionally, the swelling behavior of the hydrogel was investigated in aqueous solutions of NaCl, $CaCl_2$, and $AlCl_3$.

• Proceedings of the Membrane Society of Korea Conference
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• 1994.10a
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• pp.32-33
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• 1994

Poly(vinyl alcohol)(PVA) membranes crosslinked with Glutaraldehyde (GA) were prepared for the separation of acetic acid-water mixtures. For the preparation of the crosslinked membranes, dry PVA films were immersed for 2 days at 40$\circ$C in reaction solutions which contain different content of GA solution(25% GA in water), aceton and a catalyst, HCl. IR spectroscopy was employed to characterize the crosslinking reaction between hydroxyl groups in PVA and aldehyde groups in GA. Swelling measurements of the crosslinked membranes were carried out in both water and acetic acid to investigate the crosslinking density and swelling behaviour of the membranes.

• KSBB Journal
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• v.5 no.2
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• pp.107-112
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• 1990

The kinetic characteristics of an invertase immobilized covalently on porous silica have been appraised for the applicability of porous silica to immobilization supports of enzymes. The invertase was covalently bound with glutaraldehyde on 3-aminopropyltriethoxy-silane-activated porous silica to give a maximum loading of 120mg invertase per 1 gram of dry silica and 26.9 to 70.2% retention of original activity. The porous structure of silica seems to be suitable for enzyme immobilization, judging from the observed results of high immobilization capacity and comparably satisfactory retention of enzyme activity.

• Journal of the Korean Graphic Arts Communication Society
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• v.1 no.1
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• pp.69-75
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• 1983

Among the gelatin hardness for photographic emulsion, the formal dehyde , dialdehydes, n-Methylol compounds, ketonea, carbonylic acid and carbamic acid derivatives, and s-Triazine derivatives were studied. The greater purts of hardeners formed cross-link by the reaction with ${\varepsilon}$-Amino group in the lysine and OH group in the hydroxylysine. Glutaraldehyde produced most stable cross-link due to the formation of pyridinum ion. 2.5 hexanedione and 3-hexone-2.5-dione possible to use as the ketone hardner . The sodium salt of 2.4-dichloro-6-hydroxy-S-Triazine was newly developed as the olefinic hardners for emulsion.lsion.