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CMC계 수용성 섬유의 물리적 강도향상 첨가제에 관한 연구
최영민,정의현,박진원,신재균,Kajiuchi, Toshio,Hong, Kyung jin 한국공업화학회 2003 응용화학 Vol.7 No.2
The aim of this research was to develope the additive for physical strength improvement of water soluble fiber(CMC) using viscose rayon. Experimental parameters were reaction time and concentration of MgSo₄. Firstly, solubility of carboxymethylcellulose(CMC) according to the addition of MgSO₄ was tested at room temperature with water. Secondly, through the examination of the FT-IR spectra, absorption band caused by hydroxyl group and carboxyl group was confirmed.
Carboxymethylcellulose(CMC)를 이용한 수용성 섬유 제조 특성에 관한 연구
최영민,정의현,박진원,신재균,Toshio, Kajiuchi,Hong, Kyung Jin 한국공업화학회 2003 응용화학 Vol.7 No.1
The manufacturing characteristics of water soluble fiber were studied using carboxymethycellulose(CMC) prepared from viscose rayon. Manufactiring process of CMC consists of mercerization and etherification stages. Experimental conditions are NaOH and MCA concentration and stop of reaction process. The former two steps of manufacturing process were reduced to one step. The solubility of CMC in one step process was compared with former process.
리Trichoderma viride 속 셀룰라아제에 의한 폐신문지의 효소가수분해반응의 속도론적 연구
이승무,박진원,미내준부,명부고사 한국화학공학회 1990 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.28 No.6
Trichoderma viride(IFO 30498)로부터 생성된 셀룰라아제를 이용한 폐신문지의 효소가수분해반응에 있어서 생성물인 환원당의 생성속도식에 관하여 연구하였다. 환원당의 생성속도는 생성물저해요인, 반응온도에 의한 효소의 실활과, 셀룰로오스 표면에 강하게 흡착하는 효소의 실활에 의하여 감소하였다. 셀룰로오스의 구조적 복합성을 설명할 수 있는 활성기질계수를 도입하여, 생성물저해요인과 효소가수분해 과정에서의 효소의 실활을 고려한 속도식을 연구하였다. 비활성화된 효소의 양은 gel filtration chromatography(GFC) 법으로 분석 하였다. 속도식은 폐신문지로부터 생성되는 환원당의 농도를 정확히 예측할 수 있었다. A kinetic study of enzymatic hydrolysis of newspaper with cellulase prepared from Trichoderma ciride (IFO 30498) has been carried out. The rate of reducing sugar formation decelerated due to inhibition by the products enzyme thermoinactivation, and substrate inactivation of the enzymes tightly adsorbed on the cellulose surface. The kinetics take into account the structural complexity of cellulose which can be explained by the activated subslrale coefficient, the inhibition by reaction products, and the inactivation of enzyme in the course of the enzymatic hydrolysis The inactivated enzyme quantity is measured by GFC analysis The kinetics satisfactorily predict the reducing sugar accumulatiun from newspaper.
Reactive Aqueous Two - Phase Partition of Cellulase
Kim, Sang Yeul,Moon, Hong Young,Park, Jin Won,Kajiuchi, Toshio 한국화학공학회 1994 NICE Vol.12 No.1
Reactive aqueous two-phase partition of cellulase by modification with amphiphilic copolymer as studied. The modifier of cellulase could be directly used as a polymer of two-phase system. the malefic acid anhydride funttional group of the synthetic copolymer covalently coupaed with the amino groups of cellulase molecule. The degree of modification of the amino groups was controlled by the types of synthetic copolymer or the weight ratio of a synthetic copolymer to ellulase. As the degree of modification of cellulase increased, the modified cellulase moved to the copolymer phase of the copolymer/dextran two-phase system.
Kim, YeounSoo,Lee, Hyejin,Kim, Honghyun,Park, Kwinam,Park, Jinwon,Toshio, Kajiuchi,Hong. Kyung jin 한국공업화학회 2003 응용화학 Vol.7 No.1
Reactive aqueous two phase system(ATPS) using hydrophilic polymer and dextran was applied to recover the Copolymer consists of polyethlene oxide(PEO) and maleic acid anhdride (MA) was used to modify the cellulase. BY controlling the ratio of ethylene oxide, hydrophilic property of copolymer was controlled, and the MA functional group of copolymer covalently coupled with the amino groups of cellulase. The two phase system was mixed with dextran and copolymers with molecular weight of 505,000. The modified moved to the down phase,dextran As a result, most enzymes, approximately over 70%, moved to copolymer Therefore, reactive aqueous two phase partition by modification of cellulase is very effective to separate enzyme from the fermentation broth.