Convenient Method of Chain‐Growth Polycondensation for Well‐Defined Aromatic Polyamides | Zendy

Yokozawa Tsutomu | Zendy; Muroya Daichi | Zendy; Sugi Ryuji | Zendy; Yokoyama Akihiro | Zendy

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Convenient Method of Chain‐Growth Polycondensation for Well‐Defined Aromatic Polyamides

Author(s) -

Yokozawa Tsutomu,

Muroya Daichi,

Sugi Ryuji,

Yokoyama Akihiro

Publication year - 2005

Publication title -

macromolecular rapid communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 154

eISSN - 1521-3927

pISSN - 1022-1336

DOI - 10.1002/marc.200500109

Subject(s) - condensation polymer , polyamide , dispersity , polymer chemistry , tetrahydrofuran , monomer , benzamide , yield (engineering) , chemistry , oligomer , polymerization , aqueous solution , polymer , organic chemistry , materials science , solvent , metallurgy

Summary: For the convenient synthesis of well‐defined poly( N ‐octyl‐ p ‐benzamide)s with low polydispersities, the polycondensation of methyl 4‐octylaminobenzoate ( 1 ) was investigated. Methyl ester monomer 1 polymerized with lithium 1,1,1,3,3,3‐hexamethyldisilazide (LHMDS) in the presence of an initiator in tetrahydrofuran at −10 °C. The highly pure polyamide with a defined molecular weight and a low polydispersity is obtained after simple treatment of the reaction mixture with aqueous NaOH solution, followed by evaporation.The chain‐growth polycondensation of 4‐octylaminobenzoic acid methyl ester ( 1 ) with lithium 1,1,1,3,3,3‐hexamethyldisilazide (LHMDS) to yield poly( N ‐octyl‐ p ‐benzamide).

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