SOLUBILIZATION OF N-ALKANES INTO POLYAZOMETHINES HAVING FLEXIBLE (N-ALKYLOXY)METHYL SIDE-CHAINS

Solubilization behavior of n-alkanes (C-k, k = 15, 20, 32, 40 and 50) into polyazomethines (C-m-PAM) having flexible (n-alkyloxy)methyl side chains (-CH2OCmH2m+1, m = 4, 6, 8, 12) was studied by measuring layer spacings of the layered structures with wide angle X-ray scattering ( WAXS) and effects of side chain lengths of the polymers and chain leng ths of n-alkanes were discussed. Liquid n-alkanes were miscible with t he side chains of the polymers only when the side chains were molten t o form mesophase. In mesophase the layered structure was not disrupted by adding C-k and on adding excess n-alkanes the presense of solubili ty limits was confirmed. With increasing side chain length of C-m-PAM and chain length of C-k the solubility limit of n-alkane increased and decreased, respectively. (C) 1996 Elsevier Science Ltd.