TY - JOUR
T1 - Bromination and gas permeability of poly(1‐trimethylsilyl‐1‐propyne) membrane
AU - Nagai, K.
AU - Higuchi, A.
AU - Nakagawa, T.
PY - 1994/11/28
Y1 - 1994/11/28
N2 - The bromination of poly(1‐trimethylsilyl‐1‐propyne) (PMSP) was carried out by immersing a PMSP membrane in bromine water at 25°C. The bromine mainly reacted at the carbon–carbon double bonds in the backbone chain, and carbon–carbon single bonds were produced, which was determined from the infrared (IR) and ultravilet (UV)–visible analyses. The glass transition temperature of the PMSP is above 350°C, but a new endothermic peak appeared between 50 and 80°C in the differential scanning calorimetry (DSC) curves of all brominated PMSPs. The permeability for 12 gases in the PMSP membrane and its brominated membranes was investigated between 30 and 90°C below 1 atm. With increasing bromine content in the membrane, the permeability coefficient for all gases decreased together with the diffusion coefficient, and the ideal separation factor for the industrially important gas pairs increased at 30°C. A distinct change in slopes at near the endothermic temperature determined by the DSC analysis was observed in Arrhenius plots of the permeability coefficients in all brominated PMSP membranes. © 1994 John Wiley & Sons, Inc.
AB - The bromination of poly(1‐trimethylsilyl‐1‐propyne) (PMSP) was carried out by immersing a PMSP membrane in bromine water at 25°C. The bromine mainly reacted at the carbon–carbon double bonds in the backbone chain, and carbon–carbon single bonds were produced, which was determined from the infrared (IR) and ultravilet (UV)–visible analyses. The glass transition temperature of the PMSP is above 350°C, but a new endothermic peak appeared between 50 and 80°C in the differential scanning calorimetry (DSC) curves of all brominated PMSPs. The permeability for 12 gases in the PMSP membrane and its brominated membranes was investigated between 30 and 90°C below 1 atm. With increasing bromine content in the membrane, the permeability coefficient for all gases decreased together with the diffusion coefficient, and the ideal separation factor for the industrially important gas pairs increased at 30°C. A distinct change in slopes at near the endothermic temperature determined by the DSC analysis was observed in Arrhenius plots of the permeability coefficients in all brominated PMSP membranes. © 1994 John Wiley & Sons, Inc.
UR - http://www.scopus.com/inward/record.url?scp=0028546178&partnerID=8YFLogxK
U2 - 10.1002/app.1994.070540903
DO - 10.1002/app.1994.070540903
M3 - 期刊論文
AN - SCOPUS:0028546178
SN - 0021-8995
VL - 54
SP - 1207
EP - 1217
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 9
ER -