New multiblock terpoly(ester–ether–amide) thermoplastic elastomers with various chemical composition of ester block

Low Temperature Endotherm in Multiblock Terpoly(ester-b-ether-b-amide) Thermoplastic Elastomers

“…Data in Figure 3 and in ref. [17,19] indicate that small endotherms associated with T* m2 are shaping better and better with decreasing endotherm of the crystalline hard phase melting (T m2 ).…”

“…Their small, constant enthalpy of dispersion (DH L 5 J/g) and a low temperature of their destruction (T* m2 L 60 8C -the dispersion temperature of aggregate) additionally confirms that these are neither the crystalline nor the semicrystalline formations. [17,18] The examination of TPEEA samples by dynamic mechanical thermal analysis (DMTA) combined with the DSC studies ( Figure 6 of ref. [18] ) was presented in ref.…”

“…[17,18] The examination of TPEEA samples by dynamic mechanical thermal analysis (DMTA) combined with the DSC studies ( Figure 6 of ref. [18] ) was presented in ref. [18] The curves E 99 = f (T) show losses of the loss modulus at the points determining the relaxation processes associated with the glass transition temperature of the phase of hard blocks T g2 or with the dispersion temperature aggregates T* m2 .…”

“…[18] ) was presented in ref. [18] The curves E 99 = f (T) show losses of the loss modulus at the points determining the relaxation processes associated with the glass transition temperature of the phase of hard blocks T g2 or with the dispersion temperature aggregates T* m2 . Because these are losses of the loss modulus E 99 but not of their maxima, the recorded effect is most probably an effect associated with the dispersion of aggregates (T* m2 ).…”

“…This phenomenon is a feature of the multiblock elastomers containing relatively short oligoamide sequences between the flexible blocks. [16,19] It seems probable that the clusters stabilised by hydrogen bonds appear in the amorphous phase of these elastomers.…”