Polish version

Login form

register


Print

R. Ukielski, M. Piątek

Preparation and some properties of multiblock copoly(amide-b-amide)s

Polimery 2005, No 11-12, 793



Summary

The paper concerns the polymers built of oligoamide hard blocks and oligoamide soft blocks (KPAA, formula I). Oligo(laurolactam) (PA12) was used as hard block and the product of reaction of dimerized fatty acid and hexamethylene diamine (PA6,36) was used as a soft one. Effects of molar ratio of these blocks on the following properties of KPAA have been investigated: limiting viscosity number ([2]), degrees of swelling in water and benzene (***, Qbenz, respectively), tensile properties and values of phase transition temperatures (Table 1, Fig. 1). It was found that fulfilling of various requirements concerning functional properties was possible when KPAA composition was properly chosen.


Key words: multiblock thermoplastic elastomers, hard and soft polyamide blocks, functional properties, phase transitions


R. Ukielski, M. Piątek

Preparation and some properties of multiblock copoly(amide-b-amide)s