• 한국응용과학기술학회지
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• 제20권4호
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• pp.341-345
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• 2003

Organic acid salt of fatty polyamide (DDDT) and acrylate of fatty carbamide (DDTCA) were synthesized as a main component for the softener. O/W type non-ionic softener (NSC) was prepared by blending DDDT and DDTCA with beef tallow, lanolin anhydride. polyoxyethylene(7) stearyl ether, and polyoxyethylene(50) oleyl ether. After treatment of NSC to all cotton fabrics, the physical properties such as tear strength, crease recovery, and flexing abrasion resistance were measured. As a result of the measurement, NSC was proved to be durable non-ionic softener with good softness.

• 한국응용과학기술학회지
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• 제21권3호
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• pp.191-196
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• 2004

An emulsion of octadecamidoethylaminoethyl dodecate (which provides softness) and an emulsion silicone oil KF-96 (which provides lubricity) were separately synthesized. Then PP finishing softeners (SSA-7) was prepared by blending of the synthesized emulsions with beef tallow hardened oil (a softness improving agent). PP finishing treatment was carried out with the prepared SSA-7 and PP finishing resin by a one bath method, and several physical properties were tested. As a result, crease recovery, tear strength, softness, lubricity, and bending resistance were all good, indicating that the prepared SSA-7 is a good PP finishing softener.

• 한국응용과학기술학회지
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• 제19권4호
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• pp.291-296
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• 2002

Fatty polyamide that gives softness, lubrication and bulky property and alkyl imidazoline that gives durable softness and antistatic property were synthesized. then, an O/W-type durable softener (DSN) was prepared by the emulsion of the synthesized fatty polyamide and alkyl imidazoline. Emulsion stability of the DSN was good, and the mixed HLB value was 11.2. From the measurement of softness, lubrication, antistatic property, bending resistance, and color fastness, it was proved that the prepared DSN was a good durable softener for nylon.

• 미생물학회지
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• 제36권2호
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• pp.119-124
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• 2000

화학유연재와 화학호제를 생산하는 공장의 폐수와 인근 토양으로부터 화학유연제, organopolsiloxane(OPS)을 분해하는 33종의 세균을 분리했다. 이들 중 활성이 뛰어난 5균주에 대하여 미생물학적 특성과 화학유연제의 제거효율을 검토했으며, 5균주 중 화학유연제의 제거효율이 가장 양호한 W3712균주의 동정을 실시했다. 선별된 분리균주 5균주는 $37^{\circ}C$에서 5일간 진탕배양하므로서 2,500mg/l 화학유연제를 65.2~67.9% 제거시켰다. 분리균주인 W3712, S3712와 S3723균주의 생육최적 pH는 7.0~7.5였으며, 그리고 W3712균주의 생육최적온도는 $37^{\circ}C$였으나, 다른 4균주는 $30^{\circ}C$에서 생육이 가장 양호하다. 분리균주 5균주는 배양초기 pH7.0에서 화학유연제를 가장 잘 제거했으며 5일간의 매양으로 62.0-65.6%의 제거효율을 나타냈다. 그리고 W2811균주, W2823균주, S371균주는 $30^{\circ}C$에서 화학유연제를 가장 잘 제거시켰으며, W3712균주는 $37^{\circ}C$에서 가장잘 제거시켰으며 제거효율은 66.5%였다. 특히,이들 균즈에 의한 화학유연제의 제거에 있어서 통기량은 별다른 영향을 미치지 않았다. 화학유연제의 제거능이 우수한 W3712균주를 Corynebacterium pseudodiphtheriticum W3712로 동정하고 명명하였다.

• 한국산업융합학회 논문집
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• 제24권5호
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• pp.581-587
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• 2021

In recent years, contamination of drinking water sources has emerged as a serious social problem, such as a large number of impurities in tap water or groundwater or the supply of suitable water due to rust of pipes. Although the government and public institutions are implementing various measures to protect water sources, they cannot improve water quality in a short period of time because of the enormous cost involved. Therefore, in recent years, preference has been given to a device that converts tap water, which is hard water, into soft water by installing a separate water softener at the faucet from which tap water is discharged. However, the existing filtration device has a problem that filtration performance is gradually lowered when impurities accumulate in the filter, requiring continuous filter replacement. In this study, the optimal design of the filter housing was performed to develop a water softener that can be washed when impurities accumulate on the filter inside the water softener connected to the faucet. For optimal design of the filter housing, fluid and fluid-structural interaction analysis were performed on the design pressure to determine the shape and thickness of the housing, and design review was performed through prototype.

• 미생물학회지
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• 제36권2호
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• pp.150-154
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• 2000

화학유연재, organopolysiloxan분해세균인 Corynebacterium pseudiptheriticum W3712의 생물학적 활성을 증가시키기 위하여 균체를 고정하시켰다. 이 세균의 고정화 담체로서는 bentonite가 가장 양호했으며, bentonite에 의한 organopolusiloxane의 물리적 흡착효율은 62.5%였다. 실험균주의 배양액 16ml를 bentonite 20g에 고정시킴 고정화균체 10.0g은 12,000 mg/l의 organopolysiloxaneqnsgotprbs 폐수를 실온에서 10일간 정치배양하므로 95.0% 제거시켰다. 이상의 결과로 이 고정화 균체를 공장의 폐수 저장탱크를 개조하지 않고 정화할수 있다고 사료되었다.

• 한국의류산업학회지
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• 제7권3호
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• pp.333-338
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• 2005

We examined the antimicrobial effects of the cotton fabrics which were laundered at different conditions and treated with a colloidal silver solution using Staphylococcus aureus. Colloidal silver solution was made from commercial colloidal silver generator by electrolysis. The fabric which was innoculated and washed with water before drying had no more Staphylococcus aureus, but which was innoculated and dried before washing with detergent solution had lower reduction rate. The fabric washed with oxygen bleach did not have an antimicrobial effect, but rinsed with 0.07% fabric softener showed antimicrobial properties. The fabric rinsed with 0.7ppm colloidal silver solution had better antimicrobial effects. As the treating concentration of silver solution increased, the antimicrobial property of the fabric was increased. The fabric treated with 5% silver solution sustained reflectance and whiteness of untreated fabric. The colloidal silver treated fabric lost antimicrobial property after washing because nano-sized silver particles were located on uneven fiber surface without chemical bonding forces.

• 공업화학
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• 제9권4호
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• pp.603-607
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• 1998

Cellulose를 출발물질로 하여 ethylene oxide와 hydroxyethylcellulose를 합성하였다. Epichlorohydrin과 triakylamine을 치환반응시켜 제4급 암모늄염을 만든후, 산을 첨가하여 3-chloro-2-hydroxypropyltrialkylammonium chloride를 얻었다. Hydroxyethylcellulose와 glycidylalkylammonium chloride 또는 3-chloro-2-hydroxypropyltrialkylammonium chloride를 coupling하여 지금까지 알려져 있지 않은 화합물 hydroxyethylcellulose-2-hydroxypropylammonium chloride ether와 hydroxyethyl-cellulose-2-hydroxypropyltriethylammonium chloride ether를 각각 73.9%, 74.2%의 수율로 합성하였다.

• 한국잠사곤충학회지
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• 제4권
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• pp.63-68
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• 1965

본 연구는 견사 lousiness와 유전관련성을 구명하여 도태가능성 여부를 조사하는 반면, 그 외 도태가능성이 불완전하였으므로 정련방법의 개량으로 인하여 lousiness의 개선을 기도하였던 바 얻어진 결론은 다음과 같았다. (A) lousiness의 유전관계문제 1. 교잡에 의한 lousiness 감소는 11.0%이었다. 2. lousiness의 유전은 불완전우성으로 유전한다. 3. lousiness를 발생하는 유전은 누적적으로 작용하고2종 이상의 유전자가 lousiness 발생에 작용하는 것으로 고찰된다. 4. 잠견의 실용형질과 lousiness와는 유전상관관계가 없다. 5. 다계량계통의 잠품종에서 반드시 lousiness의 발생이 많다고 할 수 없다. 6. 본 실험에서의 lousiness 검경은 생계의 exforiation 시험결과와 동일하였다. (B) 정련에 의한 lousiness 개선문제 1. 양 ion계 화학연화제 0.2% 용액을 95$^{\circ}C$ 하에서 30분간 처리할 때 lousiness 발생을 억제하면서 정련할 수 있었다. 2. 음 ion계 화학연화제는 생사정련에 불합격하였다. 3. 양 ion계 연화제를 상기조건하에 처리할 때 견사의 물리적성질에 변화가 없었다. 4. 석검정련은 lousiness 발생을 용이하게 시킨다.

• 한국응용과학기술학회지
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• 제20권1호
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• pp.1-7
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• 2003

In order to prepare a softener, alkyl imidazoline salt, fatty carbamide salt, and fatty polyamide salt were synthesized first, and then the synthesized salts were blended. The prepared softeners were applied to acrylic fibers, and then several properties were tested. As a result, the prepared softeners show good softening and lubricating properties, and they also show a little antistatic property. Through bending resistance tests and measurements of feeling change of acrylic fibers treated with the softeners, it was proved that the prepared softeners are durable softeners.