Abstract
Novel comb-like poly(amide-guanamine)s, poly(urea-guanamine)s and poly-(imide-guanamine)s which contain three long alkyl side-chains in each repeating unit (three side-chains polymers), were synthesized by the reaction of 2,4-bis(amino-N-octadecylanilino)-6-heptadecyl-1,3,5-triazines with aromatic or aliphatic diacid chlorides, diisocyanates and pyromellitic dianhydride, respectively. Making reference to the three side-chain polymers, the corresponding one side-chain polymers were also prepared using 2,4-bis(aminoanilino)-6-heptadecyl-1,3,5-triazine as a monomer. Although the one side-chain polymers were insoluble in tetrahydrofuran, chloroform, toluene and benzene, the three side-chains polymers except polyimides were readily soluble in these solvents. These polymers had good thermal stability though the bulky long alkyl groups were present. The three side-chains polymers are characterized by side-chain crystallinity. The one side-chain polymers were found to show low crystallinity by differential scanning calorimetry and wide angle X-ray diffraction. The influence of the main-chain structure on the side-chain crystallization was investigated.
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Lin, JK., Yuki, Y., Kunisada, H. et al. Synthesis and Characterization of New Comb-Like Polyguanamines Containing Three Long Alkyl Side-Chains in Repeating Unit. Polym J 22, 92–102 (1990). https://doi.org/10.1295/polymj.22.92
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DOI: https://doi.org/10.1295/polymj.22.92