2010
DOI: 10.1002/app.32532
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PET/PC blends: Effect of chain extender and impact strength modifier on their structure and properties

Abstract: Methylene diphenyl diisocyanate (MDI) affects the morphology, rheological, mechanical, and relaxation properties, as well as tendency to crystallize of PET in PET/PC/(PP/EPDM) ternary blends produced by the reactive extrusion. Irrespective of the blend phase structure, the introduction of MDI increases the melt viscosity (MFI dropped), resulting from an increase in the molecular weight of the polymer chains; the PET crystallinity was also reduced. MDI favors compatibility of PET with PC in PET/PC/(PP/EPDM) ble… Show more

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Cited by 30 publications
(25 citation statements)
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“…There is a noticeable difference in the effects of CE alone and its combination with CNM. Thus, the addition of CE leads to the increase of intrinsic viscosity and noticeable reduction of MFI values, which results from increased molecular weight of PET [4,15]. M n 's growth (MFI reduction) of PET containing CNM is not very substantial.…”
Section: Characterizationmentioning
confidence: 98%
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“…There is a noticeable difference in the effects of CE alone and its combination with CNM. Thus, the addition of CE leads to the increase of intrinsic viscosity and noticeable reduction of MFI values, which results from increased molecular weight of PET [4,15]. M n 's growth (MFI reduction) of PET containing CNM is not very substantial.…”
Section: Characterizationmentioning
confidence: 98%
“…The dynamic mechanical (relaxation) properties of the materials were found by analyzing temperature dependences of the mechanical loss tangent (tan δ) and dynamic shear modulus (G ) of the samples. The tests were performed using a reverse torsion pendulum (designed at MPRI NAS of Belarus) [3,15]; the frequency was 1 Hz. The temperature measurement accuracy was 0.1 • C, tan δ, ±3%; G , ±1%.…”
Section: Characterizationmentioning
confidence: 99%
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“…Aiming to combine their qualities, blends have been widely studied. Pesetskii et al 1 investigated the effect of an chain extenders and impact modifier on a PET/PC blend. They mentioned the effect of the chain extenders on the morphology, and the increase in the impact strength.…”
Section: Introductionmentioning
confidence: 99%