개질화된 Poly-L-Cysteine계 복합막의 기체투과 특성

한병학; 이순홍; 김계용

Polymer(Korea), Vol.14, No.3, 290-297, June, 1990

Export Citation

개질화된 Poly-L-Cysteine계 복합막의 기체투과 특성

Gas Permeability of Modified Poly-L-Cysteine Composite Membranes

한병학, 이순홍, 김계용

초록

Poly-L-cysteine (PC) 및 그 유도체로서 Poly-S-benzyl-L-cysteine (PBC), poly-S-carbobenzoxy-L-cysteine (PCBC)을 합성하여 이를 막소재로 gas/gas system 및 water/water system에서 의 기체 투과 특성을 검토하였다. Water/water system에서 polypeptide chain의 degradation 방지 및 물리적 성질을 보완하기 위하여 지지체로 aromatic copoly (amide-ester) (PA)를 합성하여 복합막 (composite membrane)을 제조하였다. 복합막의 제조방법 및 유도체의 side chain 변화에 따른 기체투과특성을 검토한 결과 산소의 투과계수(P_O2)는 gas/gas, water/water system 모두 PC O2/P_N2) 및 가스상태의 산소의 투과계수에 대한 용존상태의 산소의 투과계수비 (Pw/Pg)는 PCBC< PBC

As a membrane material, namely, poly-T-benzyl-L-cysteine(PBC) and poly-S-carbobenzoxy-L-cysteine (PCBC) were synthesized by modifying Poly-L-cysteine(PC). Thin film composite membranes of PC, PBC and PCBC were prepared by casting dilute solutions of polymer on aromatic copoly(amide-ester) (PA) support, and their permeability characteristics to gaseous oxygen and dissolved oxygen in water were measured. The permeability coefficients of gaseous oxygen in gas/gas system (P_g) and dissolved oxygen in water/water system (P_w), P_w/P_g, and the selectivity of oxygen to nitrogen (P_O2/P_N2) depend on the properties of the side chains of the coated polymers. Both P_g and P_w increase with increasing length of the side chains, in the order of PC < PBC < PCBC. However, P_O2/P_N2 and P_w/P_g increase in the order of PCBC < PBC < PC.

[References]

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[1] Yasuda H, Lamaze CE, J. Appl. Polym. Sci., 16, 595 (1972)

[2] Minoura N, Fujiwara Y, Nakagawa T, J. Appl. Polym. Sci., 22, 1593 (1978)

[3] Minoura N, Fujiwara Y, Nakagawa T, J. Appl. Polym. Sci., 24, 965 (1979)

[4] Kawai T, Nohmi T, Kamide K, Polym. Prepr. Am. Chem. Soc. Div. Polym. Chem., 20, 309 (1979)

[5] Buckley CJ, Chambers CE, Trans. Am. Soc. Artif. Intern. Org., 17, 416 (1971)

[6] Hall CW, Spria M, Trans. Am. Soc. Artif. Intern. Org., 16, 12 (1970)

[7] Loeb S, Sourirajan S, UCLA Rep. 60 (1960)

[8] Blakley ER, Summer AK, Spencer EY, Can. J. Technol., 30, 258 (1952)

[9] Berger A, Noguchi J, Katchalski E, J. Am. Chem. Soc., 78, 4483 (1956)

[10] Kang WJ, Lee SH, Kim KY, Ryu DS, Kim JI, HWAHAK KONGHAK, 27(3), 339 (1989)