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- Alla, Abdelilah, et al.
(författare)
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Acylated and hydroxylated polyamides derived from L-tartaric acid
- 2005
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Ingår i: Polymer. - : Elsevier. - 0032-3861 .- 1873-2291. ; 46:9, s. 2854-2861
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Tidskriftsartikel (refereegranskat)abstract
- A series of polyamides 6,4 were prepared from 1,6-hexanediamine and active esters of 2,3-di-O-acylated l-tartaric acid by polycondensation in solution. Both O-alkoyl and O-benzoyl esters were used as hydroxyl protecting groups. The resulting acylated polytartaramides were found to be semicrystalline polymers with Tm between 100 and 200°C and Tg slightly above 100°C. Controlled hydrolysis of the ester side group led to the preparation of poly(hexamethylene l-tartaramide)s with different content in free hydroxyl groups. These polyamides continue being crystalline but their properties largely differ from those displayed by their parent acylated polymers.
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