간행물
한국응용과학기술학회지 KCI 등재 The Korean Society of Applied Science and Technology
- 발행기관 한국응용과학기술학회(구 한국유화학회)
- 자료유형 학술지
- 간기 격월간
- ISSN 1225-9098 (Print)2288-1069 (Online)
- 수록기간 1984 ~ 2024
- 주제분류 공학 > 화학공학 공학 분류의 다른 간행물
- 십진분류KDC 575DDC 665
권호리스트/논문검색
Vol.15 No.1 (1998년 3월) 11건
1.
1998.03
구독 인증기관 무료, 개인회원 유료
Lubricating softner(SOS-2) for permanent press(PP) finish was prepared by blending water, beef tallow hardened oil for improving softness, and the emulsion which was synthesized from N-hexadecanoyl-N,N'-bis(2-hexadecamidoethyl)amine as a softening component and silicone oil KF-96 as a lubricating component. The prepared SOS-2 and the PP finishing resin were applied to PP finishing cotton broad cloth and P/C gingham samples using one bath method. The properties such as tear strength, crease recovery, bending resistance test were tested. The samples treated with SOS-2 and PP finishing resin have improved properties, compared with nontreated samples, those treated only with PP finishing resin, those treated with commercial PP finishing softners and PP finishing resin.
4,000원
2.
1998.03
구독 인증기관 무료, 개인회원 유료
Poly(p-anol-formaldehyde) cinnamates(AGEFCs) were synthesized to prepare a photo-sensitive polymer which enabled to be photodimerized via 6-center reaction. The photocharacteristics of the mixture of the AGEFCs and a sensitizer after exposure to light was tested. The yield of the residual film, which was closely related to the sensitivity of the film, was affected by the degree of polymerization of the backbone resin, sensitizers and their concentration. AGEFC-3 revealed a good photosensitive effect such as about 73% yield of residual film at 128 min. of exposed time.
4,000원
3.
1998.03
구독 인증기관 무료, 개인회원 유료
To prepare a O/W type nonionic durable softner(ANSA), synthesized 1, 3-dihexadanoyl-2, 7-dioxy-6, 8-di(2-hexadecanoyloxyethyl)-1, 3, 6, 8-tetraazacyclodecane as the main component of softner, was blended with beef tallow, anhydrous lanolin, polyoxyethylene(20) oleyl ether, sorbitan sesquioleate, and polyoxyethylene(7) stearyl ether in various compositions. Emulsion stability of ANSA was good, and the mixed HLB value was 9.8. After the treatment of ANSA to all cotton fabrics, the physical properties such as tear strength, crease recovery, and flexing abrasion resistance were measured, respectively. As a result of the measurement, ANSA was proved to be durable softner with good softness.
4,000원
4.
1998.03
구독 인증기관 무료, 개인회원 유료
Photoresist is defined as substance that makes chemical changes in its solubility, colouring and hardening by light energy. In this study, photosensitive photoresists of the positive type for a printing plate were studied. PF, o-, m-, p-CF resins as a matrix resin were synthesized at an identical condition. Photoresists were prepared by mixing NDS derivatives with a matrix resin at various mixing ratios. Characteristics of photoresists were studied by yield method of residual using solubility and Optical microscope was also analyzed. Prepared photoresist using NDS derivatives shows excellent photosensitivity and solubility compared with commercial product. The mixing ratio of 1:4(by mass) of NDS derivative[III] and m-CF resin shows the highest dissoultion rate among others. In addition, photoresist was obtained at this condition resulted in the superior sensitivity and contrast.
4,000원
5.
1998.03
구독 인증기관 무료, 개인회원 유료
Chitin/chitosan be known as biodegradable natural polymer. However, commercial use of chitin has been limited due to highly resistance to chemicals and the absense of proper solvents. Therefore, we was studied that chitin was prepared by the application of Hackman's method from Protunus trituberculatus shells. And another viscosity chitosan were prepared from chitin which were deacetylated under various concentration of alkali, reaction time and temperature by the application of Mima's method. And crosslinked chitin/chitosan was preparaed from chitin/chitosan with crosslink agent followed by crosslinkage. The major parameters for chitosan manufacturing methods were found to be concentration of alkali solution, reaction time and temperature etc. The effects of these parameters on chitin, another viscosity(molecular weight) chitosan and crosslinked chitin/chitosan were investigated by various analysis apparatus.
4,200원
6.
1998.03
구독 인증기관 무료, 개인회원 유료
On contraction of the muscles, marked changes in X-ray reflections are observed, suggesting that conformational changes of contractile molecules and the movement of myosin heads during muscle contraction. The time needed to the peak tension after the onset of stimulation and the amount of peak tension depend on the number of twitch cycle. It was found that the successive twitches decreased not only the time needed to the peak tension after the onset of stimulation but also the time needed to the maximum change of the X-ray intensity. However, the difference of the time between the peak tension and the maximum intensity change(Ti-Ii) is nearly the same at any twitch. Based on these results the causes of the decrease of Ti and Ii, and physiological implication of Ti-Ii are discussed.
4,000원
7.
1998.03
구독 인증기관 무료, 개인회원 유료
A Study on the Properties of Langmuir-Blodgett Films of Polyamic Acid containing p-Methoxyazobenzene
The absorption spectra of polyamic acid containing p-methoxyazobenzene in a mixture of N, N-dimethylacetamide(DMAC) and benzene(1:1 by volume) solution was induced photoisomerization by UV and visible light irradiation. This solution is influenced on temperature according to measure by UV-Vis Spectrophotometer. Ultra thin film of polyamic acid containing p-methoxyazobenzene was prepared on the hydrophilic quartz plate by Langmuir-Blodgett(LB) method. The precursor LB film was heated in a vacuum dry oven at 120℃ in order to convert it into the LB film of polyimide. The absorption spectra of LB films were also induced photoisomerization by UV and visible light irradiation.
4,000원
8.
1998.03
구독 인증기관 무료, 개인회원 유료
A series of long chain N-acyl amino acid type anionic surfactants were prepared by treating fatty acid chlorides with three kinds of amino acids, that is, sodium N-acyl-sarcosinates, sodium N-acyl-N-methyl-β-alaninates and sodium N-acyl-N-methyl-taurates in an alkaline solution. All prepared biodegradable surfactants were purified by thin layer chromatography and column chromatography, and identified their structures by spectral analysis.
4,900원
9.
1998.03
구독 인증기관 무료, 개인회원 유료
One of the objectives of this study were to develop a process for manufacturing activated carbons from agricultural by-products(rice shells and saw dust) and another is to measure the iodine number, ash content and removal ratio of COD. The other is to compare those values with those of commercialized activated carbons. Agricultural by-products based activated carbons were manufactured through the steam-reaction method. A rotary kiln type furnace was used for both carbonization and activation. The optimum operating temperatures for carbonization and activation were 650℃ and 900℃, respectively. For the activated carbons produced under these conditions, the iodine number was 1,127mg/g. Especially, removal efficiency of COD was 61.5% for 40mg/L of wastewater and 30% for 150mg/L of SLS(Sodium Lauryl Sulfate).
4,300원
10.
1998.03
구독 인증기관 무료, 개인회원 유료
Thin films of Eu(TTA)3(phen), which was known to show red-light emitting properties, were deposited under various deposition condition. The thickness, surface morphology, and photoluminescence(PL) were measured with α-step profiler, Atomic Force Microscopy(AFM), and PL measurement apparatus. It was found that the thickness of Eu(TTA)3(phen) film can be controlled precisely by adjusting the amounts of Eu(TTA)3(phen) in the boat. As the thickness of these films increases, the surface roughness also increases. A structure of Al/Eu(TTA)3(phen)(850a)/TPD(600a)/ITO was fabricated, Electroluminescence(EL) spectrum of which shows the peak at the wavelength of 618nm.
4,000원
11.
1998.03
구독 인증기관 무료, 개인회원 유료
Novel type surfactants containing two long-chain hydrophobic alkyl groups and two hydrophilic sulfonate groups were successfully synthesized by reactions of ethylene glycol diglycidyl ether with long-chain fatty alcohols, after then by reactions with 1,3-propane sultone and sodium hydride under THF solvent. All these compounds, so called Gemini surfactants, were purified by thin layer chromatography and column chromatography. Their structures were identified by FT-IR and 1H-NMR.
4,000원
