Copolymérisation de la N-acryloyl-L-valine et de la N-acryloyl-L-phénylalanine avec l'acrylamide

✍ Scribed by M. Camail; J. C. Maesano; A. Margaillan; J. L. Vernet

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 337 KB
• Volume: 196
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.1995.021960110

✦ Synopsis

The synthesis of N-acryloyl-L-valine (NAVAL) and N-acryloyl-L-phenylalanine (NAPHE) have been carried out from L-valine and L-phenylalanine. The chiral compounds have been characterized by 'H and I3C nuclear magnetic resonance (NMR) spectroscopy, infrared (IR) spectroscopy and polarimetry. The copolymerization of NAVAL salt, (NAVALNa, monomer A) or NAPHE salt (NAPHENa, monomer A ) with acrylamide (AM, monomer B) has been investigated using K,S20, as initiator, over a range of the feed compositions for NAVALNa (or NAPHENa) from 10 to 100 mol-%. The compositions of copolymers have been systematically assessed through I3C NMR. The reactivity ratios for the couple A, B were determined as rA = 0,67, rB = 0,91 and for the couple A , B they have been evaluated to be: rA, = 0,40, rB = 0,91. The azeotropic composition is located at 21 mol-To for the couple A, B and at 13 mol-Vo for the couple A', B. Drag reduction effects are obtained with these polymers.