Synthesis, structure and properties of thermoplastic poly(ester-siloxane) elastomers | Zendy

Vesna Antić | Zendy; Jasna Djonlagić | Zendy

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Synthesis, structure and properties of thermoplastic poly(ester-siloxane) elastomers

Author(s) -

Vesna Antić,

Jasna Djonlagić

Publication year - 2006

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0607839a

Subject(s) - siloxane , crystallinity , materials science , thermoplastic elastomer , differential scanning calorimetry , elastomer , polymer chemistry , thermoplastic , copolymer , rheology , composite material , polymer , thermodynamics , physics

Two series of thermoplastic poly(ester-siloxane) elastomers (TPES), with hard segments based on pnly(butylene terephthalate) (PBT) and soft segments based on poly(dimethylsiloxane) (PDMS), were synthesized by high-temperature, two-step transesterification reaction in the melt. In series I, the mass ratio of hard and soft segments was kept constant (57:43), while the length of the segments was varied, whereas in series II, the mass ratio of hard and soft segments was varied in range from 70:30 to 40:60, with a constant length of the soft segments. The segmented structure of the poly(ester-siloxane) copolymers was verified by ' H-NMR spectroscopy of the soluble and insoluble fractions, obtained after extraction of the samples with chloroform. The influence of the structure and composition of the TPES on the melting temperatures and degrees of crystallinity was investigated by differential scanning calorimetry (DSC). The rheological properties were investigated by dynamic mechanical analysis (DMA).

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