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Polycondensations of dicarboxylic acids and diols derived from optically active amino alcohols

✍ Scribed by Emiko Koyama; Fumio Sanda; Takeshi Endo

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 199 KB
Volume: 35
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199710)35:14<2925::aid-pola13>3.0.co;2-l

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✦ Synopsis

Polycondensations of dicarboxylic acids with diols having amide moieties derived from optically active amino alcohols were carried out. Polymers with M V n s 8,700- 17,400 were obtained by the polycondensations using 1.2 eq. of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDCrHCl) in DMF at room temperature for 8 h in satisfactory yields. The T g of the polymer rose with decrease of the methylene chain length of the dicarboxylic acid. In the T g s of the polymers from L-leucinol, evenodd effect was observed with increase of the methylene chain length of the dicarboxylic acid. The molecular rotation values of the polymers were constant except for the polymer from succinic acid, which showed the negatively largest one.

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