This paper presents the synthesis of copolymers of vinyl p-t-butylbenzoate (PTBBA) with 3-methacryloxypropyltris(trimethylsiloxy)silane (Si-1) and their permselective properties for oxygen and nitrogen. Analysis of the glass transition temperature profile by the Kwei equation implied the existence of some interaction between PTBBA and Si-1 moieties. The oxygen permeability of 1.6 x 10- 8 cma(STP) cm cm - 2 s - 1 cmHg- 1 for the Si-I homopolymer decreased with decreasing Si-1 content to arrive at 9.1 ? 10-10 cm 3(STP) cm cm- 2 s- l cmHg- 1 for the PTBBA homopolymer. Oxygen and nitrogen permeabilities were investigated in connection with Si-I content and the glass transition temperature in the copolymer. Furthermore, the effect of the condition of preparation on gas permeability was studied; that is, we prepared the copolymers of PTBBA and Si-1 with various polymerization times, and investigated their permselective properties for oxygen and nitrogen.
Посилання на статтю:
Permselective silicon-containing vinyl copolymers / Naoto Tsutsurni*, Yoshitsugu Nishikawa and Tsuyoshi Kiyotsukuri // Polymer. – 1994. – Vol 35. – P. 1268-1273.