K. Kobashi, K. Kimura, Y. Yamashita
May 23, 2003
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0
Influential Citations
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Citations
Journal
Macromolecules
Abstract
Self-assembling polycondensation was examined to prepare the whisker of poly(p-oxybenzoyl-alt-p-mercaptobenzoyl). Polymerizations were carried out in liquid paraffin (LPF) and aromatic solvents such as Therm S 800 and 1000 at 300 °C for 6 h. Polymerization concentration was 1.0 wt/vol %. The whisker was not obtained by the random copolymerization of p-acetoxybenzoic acid and S-acetyl-4-mercaptobenzoic acid at the molar ratio of 0.5 in feed. However, the whiskers were successfully prepared by the polymerization of S-(4-acetoxybenzoyl)-4-mercaptobenzoic acid (OS) and 4-(S-acetyl-4-mercaptobenzoyl)oxybenzoic acid (SO). The whisker prepared from OS (POS) in LPF was 18 μm in average length and 0.4 μm in average width, and that from SO (PSO) was slightly longer than POS. The whiskers prepared in aromatic solvents were much longer than those in LPF, for which the length was 36−49 μm. These whiskers consist of the alternating polymer chains, and the polymer chains align along the long axis of the whisker. The seq...