Crystallization behavior of PBT/ABS polymer blends

Hage, Elias; Ferreira, L. A. S.; Manrich, Sati; Pessan, Luiz Antônio

doi:10.1002/(sici)1097-4628(19990118)71:3<423::aid-app8>3.0.co;2-0

Cited by 46 publications

(33 citation statements)

References 23 publications

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“…Both melting peak types have already been observed for the neat PBT as seen in Figure 2c. Apparently the presence of ABS has not affected the binary PBT/ABS melting peaks behavior, as already observed before 34 . No melting temperature depression was observed for the PBT crystalline phase, which would be a strong indication of the immiscibility of the blend's components, according to the criterion of established by Runt 35 .…”

Section: Analysis Of Thermal Behavior Of the Pbt Through The Dscsupporting

confidence: 74%

The effect of extrusion conditions and the use of a compatibilizer in the crystallization of PBT/ABS blends

et al. 2013

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Poly(butylene terephthalate) (PBT)/ acrylonitrile-butadiene-styrene (ABS) terpolymer blends were prepared in a twin screw extruder and the use of methyl methacrylate-glycidyl methacrylate-ethyl acrylate (MGE) terpolymer as compatibilization additive was evaluated. The effect of different screw profiles and mixing conditions were evaluated on the crystallization of the blends. Differential scanning calorimetry (DSC) was used to evaluate melting and crystallization behaviors of the PBT/ABS blends. The binary PBT/ABS blend has shown a double melting peak when cooled at lower cooling rates, mainly due to its melt-recrystallization during the heating up step. ABS has not affected the melting characteristics of neat PBT. The presence of MGE, as a reactive compatibilizer, in the PBT/ABS blends has reduced its heat of fusion and has partially inhibited its melt-recrystallization under heating. As result, it has prevented the occurrence of double melting peak. The epoxy functional groups of the MGE may react in situ to the carbonyls and hydroxyls end groups of the PBT molecules, thereby hindering the mobility of PBT molecules during the crystallization process due to its grafting to the compatibilizer molecules. The melt mixed blends prepared at lower feeding rate have shown a higher degree of crystallinity for the PBT/ABS blend, probably due to degradation of PBT caused by longer residence time in the extruder. The highest shear stress imposed to the blends at higher screw speed increased the degree of crystallinity of PBT, also due to its degradation.

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Section: Analysis Of Thermal Behavior Of the Pbt Through The Dscsupporting

confidence: 74%

The effect of extrusion conditions and the use of a compatibilizer in the crystallization of PBT/ABS blends

et al. 2013

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“…It can be seen that the melting point of PBT shifts to lower temperature with introduction of PC and nanoclay to the blend. This shows that, the miscibility of PBT and PC with clay has been improved, one of the criterion for the depression of Tm 81 . The shift of PBT melting peak to lower temperature is believed to originate from the compatibilisation.…”

Section: 1 Effect Of Loading Clay With Pbt-pc 80-20 Blendmentioning

confidence: 65%

Mechanical, Thermal and Morphological Behaviours of Polybutylene Terephthalate/Polycarbonate Blend Nanocomposites

Rajakumar¹,

Nanthini²

2013

ILCPA

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Polybutylene Terephthalate (PBT) / Polycarbonate (PC) nanocomposite blend was fabricated using melt blending technique in a twin extruder. The blend composition was optimized at PBT-PC weight ratio of 80-20. The effect of incorporation of various organically modified Montmorillonite (OMMT) and naturally occurring sodium Montmorillonite (MMT) on the mechanical, thermal and morphological properties of the nanocomposites blend has been investigated. It was observed that the Izod impact strength, tensile strength and flexural strength demonstrated a significant increase with the increase in clay loading from 1-7 weight % due to homogeneous dispersion of clay within the blend matrix. Thermo gravimetric analysis (TGA) revealed an increase in thermal stability of the blend with the incorporation of nanoclay. There is also decrease in the melting temperature (Tm) and crystallisation temperature (Tc) as observed from DSC thermograms. DMA add the evidence for TGA, DSC and mechanical results. PBT -PC blend with clay exhibited featureless XRD indicative of exfoliated structure. TEM micrographs also confirm the same that the clay has exfoliated into individual layers.

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“…ABS is generally a thermoplastic material, and is used as an addition material to improve the toughness of engineering plastics, such a poly(butylene terephthalate) (PBT) [20], polycarbonate (PC) [21], nylon-6 (PA-6) [22]. ABS/PC blends exhibit an optimum balance of toughness; thermal stability, easy processability, and low cost; hence are the dominant polymeric materials used in the electronics industry.…”

Section: Introductionmentioning

confidence: 99%

Superior mechanical and electrical properties of multiwall carbon nanotube reinforced acrylonitrile butadiene styrene high performance composites

Sharma

Basu

Singh

et al. 2015

Composites Part B: Engineering

136

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Crystallization behavior of PBT/ABS polymer blends

Cited by 46 publications

References 23 publications

The effect of extrusion conditions and the use of a compatibilizer in the crystallization of PBT/ABS blends

The effect of extrusion conditions and the use of a compatibilizer in the crystallization of PBT/ABS blends

Mechanical, Thermal and Morphological Behaviours of Polybutylene Terephthalate/Polycarbonate Blend Nanocomposites

Superior mechanical and electrical properties of multiwall carbon nanotube reinforced acrylonitrile butadiene styrene high performance composites

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