Study of morphological and mechanical properties of PP/PBT blends

Boutevin, Bernard; Khamlichi, Mohammed; Piétrasanta, Y.; Robin, Jean‐Jacques

doi:10.1007/bf00294896

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…Only a very limited number of studies on these blends have been reported; however, they have received considerable interest lately. [1][2][3][4][5][6][7][8][9][10][11][12] Polypropylene (PP) is neither miscible nor compatible with poly(butylene terephthalate) (PBT) due to a great difference in polarity. In addition, PP does not contain the necessary functional group to react with PBT.…”

Section: Introductionmentioning

confidence: 99%

“…Polyolefins and poly(alkyl terephthalate) are considered to be immiscible and incompatible. Only a very limited number of studies on these blends have been reported; however, they have received considerable interest lately 1–12. Polypropylene (PP) is neither miscible nor compatible with poly(butylene terephthalate) (PBT) due to a great difference in polarity.…”

Section: Introductionmentioning

confidence: 99%

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Reactive compatibilization of PP/PBT blends by a mixture of PP-g-MA and epoxy resin

Shieh

Liao

Chang

2001

J. Appl. Polym. Sci.

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In this study, dual compatibilizers composed of the commercially available maleic anhydride‐grafted polypropylene (PP–MA) and a multifunctional epoxy resin were demonstrated to effectively compatibilize the immiscible and incompatible blends of PP and poly(butylene terephthalate) (PBT). The PP–MA with a low MA content is totally miscible with PP to make the PP phase quasi‐functionalized, so that the multifunctional epoxy has the chance to react with PBT and PP–MA simultaneously to form PP–MA‐co‐epoxy‐co‐PBT copolymers at the interface. These desired copolymers are able to anchor along the interface and serve as efficient compatibilizers. The compatibilized blends, depending on the quantity of dual compatibilizers employed, exhibit higher viscosity, finer phase domain, and improved mechanical properties. Epoxy does not show compatibilization effects for the PP/PBT blends without the presence of PP–MA in the blends. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 79: 2272–2285, 2001

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reactive compatibilization of PP/PBT blends by a mixture of PP-g-MA and epoxy resin

Shieh

Liao

Chang

2001

J. Appl. Polym. Sci.

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“…Blends of polyesters and polyamides have been investigated to improve the properties of these polymers for speci®c applications. 3,4 Blends of immiscible polymers have high interfacial tension and poor adhesion between the two phases, resulting in processing dif®culties and lack of stability due to phase separation. Blending with a reactive or functionalized polymer can eliminate these dif®culties in mechanical properties for these engineering plastics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of reactively compatibilized polyester and polyamide blends

John

Bhattacharya

2000

Polym. Int.

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Effects of amorphous nylon on the properties of poly(butylene terephthalate) and 70/30 poly(butylene terephthalate)/nylon 6 blends

Kang

Kim

Cho

et al. 1996

Polymer Engineering & Sci

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In this work, the effects of adding small amounts of amorphous nylon (a‐nylon) on the properties of poly(butylene terephthalate)(PBT) have been studied. Miscibility and properties of PBT/a‐nylon blends were compared with those of PBT/nylon 6 blends. Blends were prepared in a twin‐screw extruder. The compositions of a‐nylon or nylon 6 were varied from 0 to 20 phr. Rheological, thermal, mechanical, and dynamic mechanical properties of the blends were examined using a capillary rheometer, a differential scanning calorimeter (DSC), a universal testing machine (UTM), and a Rheometrics Mechanical Spectrometer(RMS), respectively. The PBT showed a single endotherm around 225.4°C on the DSC thermogram at the first heating scan but exhibited a second endotherm at a temperature below that of the original endotherm at the second heating scan. When a‐nylon was added, the original endotherm was remarkably affected, but the second endotherm was not appreciably changed; i.e., the heat of fusion at the original endotherm decreased linearly with increasing a‐nylon content, meaning that the addition of a‐nylon affects significantly only the higher‐melting crystals of PBT. The impact strength of PBT was decreased with nylon 6 content but was increased with increasing content of a‐nylon. With an increase in the a‐nylon content, the tensile modulus and the flexural modulus of PBT were decreased. Of interest is, however, that the tensile strength was significantly increased with a‐nylon up to 15 phr. The melt viscosity of PBT was decreased with increasing a‐nylon content, whereas it was not significantly changed with nylon 6 addition; i.e. the addition of a‐nylon acted as a lubricant or a processing aid for PBT. The dynamic mechanical and the morphological studies showed that PBT was more miscible with a‐nylon than with nylon 6. It was also found that a‐nylon exhibited a compatibilizing effect for the PBT/nylon 6 blend of 70/30 wt% composition.

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Study of morphological and mechanical properties of PP/PBT blends

Cited by 7 publications

References 21 publications

Reactive compatibilization of PP/PBT blends by a mixture of PP-g-MA and epoxy resin

Reactive compatibilization of PP/PBT blends by a mixture of PP-g-MA and epoxy resin

Synthesis and properties of reactively compatibilized polyester and polyamide blends

Effects of amorphous nylon on the properties of poly(butylene terephthalate) and 70/30 poly(butylene terephthalate)/nylon 6 blends

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