Synthesis and characterization of polyesteramides derived from an oxazoline-functional alcohol and dicarboxylic acid anhydrides
✍ Scribed by Matthias Bruch; Armin Burgath; Ton Loontjens; Rolf Mülhaupt
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 218 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0887-624X
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✦ Synopsis
Novel polyesteramides were synthesized by copolymerization in bulk of 5-(4,5-dihydro-1,3-oxazol-2-yl)-1-pentanol and various cyclic dicarboxylic acid anhydrides at temperatures varying between 120 and 200°C. The polymers resulting from polycondensation were characterized by means of 1 H-NMR, FTIR, MALDI-TOF-MS, SEC, and DSC. The glass transition temperatures, T g , of the copolymers were varied between Ϫ28 and ϩ31°C as a function of the anhydride type. Molecular weights, M w , were dependent on reaction temperature, reaction time, and anhydride type. Spectroscopic investigation of reaction products and esteramide model compounds provided evidence for imide by-product formation, which accounts for the low degree of polymerization.