• 공업화학
• /
• 제10권6호
• /
• pp.934-938
• /
• 1999

가공제의 종류에 따라 구분한 화학적 처리, 일반 효소 처리 및 바이오-테크 처리에 의해 제조된 나피를 이용하여 가공한 아닐린 유형의 유성혁, 크러스트혁과 도장혁의 물성을 조사하였다. 크러스트혁과 도장혁의 물성은 동일하게 나타난 반면 유성혁의 물성은 다른 경향을 보였다. 도장혁의 경우 세가지 처리 방법 모두 $1.2kg_f/mm^2$의 인장 강도, 30%의 신장률, $3.0kg_f/mm$의 인열 강도, $15kg_f$의 은면 균열 하중 및 2.5%의 크롬 함유량 이상을 나타내어 모두 한국산업규격의 물성을 만족하였다. 특히, 바이오-테크 처리시 다른 두 방법보다 혁의 물성이 뚜렷이 향상되었다. 이는 전자 현미경에 의한 혁의 표면 및 단면 검사와 영상 분석에 의한 모공 검사 결과로 잘 설명되어진다.

• Advances in materials Research
• /
• 제9권3호
• /
• pp.233-250
• /
• 2020

In this study, a chitosan based coating method was developed and applied on the shoe lining leather surface for evaluating its inhibition to bacterial and fungal attacks. At first, chitosan was prepared from raw prawn shells and then the prepared chitosan solution was applied onto the leather surface. Secondly, the characterization of the prepared chitosan and chitosan treated leather was performed by solubility test, ATR-FTIR, XRD pattern, SEM and TGA. Evaluation of antimicrobial efficacy of chitosan was assessed against two gram positive, two gram negative bacteria and a reputed fungi by agar diffusion test. The results of this study demonstrated that chitosan took place in both the surface of collagen fibres and inside the collagen matrix of crust leather. The chitosan showed strong antimicrobial activities against all the tested microorganisms and the inhibition increased with increasing percentage of chitosan. Therefore, the prepared chitosan in this study can be an environment friendly biocide, which functions simultaneously against different spoilage bacteria and fungi on the finished leather surface. Thus by using the prepared chitosan in shoe lining leather, the possibility of microbial attack during shoe wearing can be minimized which is one of the important hygienic requirements of footwear.

• 한국염색가공학회지
• /
• 제8권5호
• /
• pp.1-6
• /
• 1996

To obtain the basic data of the effect of antimicrobic finishing on chrome-tanned leather for apparel, it was studied that the specimens given from each step of manufacturing process, that is, steps before and after neutralization and after fixation were treated with Si-QAC as a antimicrobic finishing agent, and the antimicrobic activity was evaluated. The results were as follows: 1. The bacterial reduction of the specimens finished antimicrobically were 100% and 94.4% before and after neutralization respectively, however, the specimens carried out successive process after antimicrobic finishing exhibited the reduction of 16.5% and 14.8%. It was assumed that the antimicrobic agent was washed off by the successive process. 2. When the antimicrobic finishing was carried out on the specimens after fixation the bacterial reduction was 95.0% and then the specimen carried out successive process was 97.3%. This result indicates that antimicrobic finishing on the leather would be given after fixation rather than before and after neutralization.

• 한국컴퓨터정보학회논문지
• /
• 제6권3호
• /
• pp.131-136
• /
• 2001

본 연구에서는 스티어혁으로 남성용 구두를 제조하였다. 남성 정장용 구두는 KS G 3116의 시멘트 식 제조방법을 적용하였고. 클로로프렌 접착제로 제조하여 평가하였다. 클로로프렌 접착제를 사용하여 제조한 옥스퍼드형 구두에 대한 접착제의 품질실험으로는 내구성 및 내후성 실험을 하였다. 또한, 여성 정장용 구두뿐만 아니라 남성 정장용 구두제조에 사용한 클로로프렌 접착제의 품질실험 결과는 기대 이상이었다. 접착강도 측정에 있어서 구두 앞 코 끝의 박리강도를 측정하는 KS G 3116의 측정방법은 본 연구에서 적용한 구두 앞코에서 굽자리까지의 전체 박리강도를 측정한 경우와 비교시 매우 일치하였다.

• 한국염색가공학회지
• /
• 제6권1호
• /
• pp.19-27
• /
• 1994

Mimosa and Quebracho are, in general, tanned with leather skin, finished silk fabrics according to temperature, treatment time, tannin concetration, pH, and studies that relation between tannin weighting and various factors. This makes fundamental study on characteristic of tannin treated fabrics. and the results are as fallows : 1. λ$_{max}$ was found at 278.5nm for Mimosa. 279.5nm for Quebracho. Also a stability was good in standing time and heating. 2. The higher tannin treatment temprature was, the better tannin weighting effect was. But they were slightly decreased at over 8$0^{\circ}C$, and K/S was slowly increased. 3. As tannin treatment time increased, tannin weighting effect increased but they were decreased at over 8$0^{\circ}C$, 90min. 4. As tannin concentration increased, tannin weighting was increased. 5. In tannin weighting effect according to various pH conditions, the it's best range of pH were 3.5~5.5 of Mimosa, 2.5~3.5 of Quebracho.o.