Description of the dynamic moduli of poly(trimethylene terephthalate)/polyamide‐12 blends in molten state | Zendy

Asadinezhad A. | Zendy; Yavari A. | Zendy; Jafari S.H. | Zendy; Khonakdar H.A. | Zendy; Böhme F. | Zendy

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Description of the dynamic moduli of poly(trimethylene terephthalate)/polyamide‐12 blends in molten state

Author(s) -

Asadinezhad A.,

Yavari A.,

Jafari S.H.,

Khonakdar H.A.,

Böhme F.

Publication year - 2005

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.20413

Subject(s) - materials science , rheology , viscoelasticity , composite material , polyamide , rheometer , dynamic mechanical analysis , rheometry , scanning electron microscope , shear rate , viscosity , polymer

Binary melt blends of two thermoplastics—poly(trimethylene terephthalate) (PTT) and polyamide‐12 (PA12)—having a large difference in zero‐shear viscosity values, were prepared in different blending ratios (PTT/PA12 90/10, 75/25, 25/75, 10/90) by means of a twin‐screw extruder. Scanning electron microscopy (SEM) confirmed droplet morphology subsequently quantified using image analysis. Dynamic rheological behavior at blending temperature (230°C) was also recorded on a parallel plate oscillatory rheometer within the linear viscoelastic range. The applicability of two emulsion models, the Palierne analysis plus the Gramespacher and Meissner model, as well as a micromechanical model, the Coran analysis, to describe the dynamic moduli of the system in different compositions was investigated and also a comparison on these models was presented. POLYM. ENG. SCI., 45:1401–1407, 2005. © 2005 Society of Plastics Engineers

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