High‐impact poly(ethylene terephthalate) blends

Penco, Maurizio; Pastorino, M. A.; Occhiello, E.; Garbassi, F.; Braglia, R.; Giannotta, Giorgio

doi:10.1002/app.1995.070570309

Cited by 45 publications

(28 citation statements)

References 14 publications

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“…The absence of the two absorption bands (at 1945, 1873 cm −1 ) of maleic anhydride group in SEBS-g-MA for both compatibilized LCP-and rPET-composites is observed, indicating the interaction between maleic anhydride groups of SEBS-g-MA with the hydroxyl end-group of PET component [22,25,26]. The interaction between carbonyl groups of PET and SEBS-g-MA from FTIR studies has also been proved by Carte et al [27] and Penco et al [28].…”

Section: Ftir Characterizationsupporting

confidence: 64%

Reinforcing performance of recycled PET microfibrils in comparison with liquid crystalline polymer for polypropylene based composite fibers

2012

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Recycled polyethylene terephthalate (rPET) used as an alternative reinforcing additive for polypropylene (PP) based composite fibers, compared with liquid crystalline polymer (LCP), was investigated. Both PP-LCP and PPrPET composites were prepared as fiber using hot drawing process. The effects of draw ratios and compatibilizer dosages on morphology in relation to tensile properties of both types of the composite systems were studied. The variation of draw ratios resulted in much change of stress-strain behavior in compatibilized rPET composite system owing to the obvious difference in morphological change of rPET dispersed phase upon drawing. Tensile strength and extensibility of both composites system were significantly improved with compatibilizer loading. The tensile strength of compatibilized rPET-composite fibers was higher than that of the compatibilized LCP system. The obtained results demonstrated the high potential of rPET as a well-defined reinforcing material for PP based composite fiber under the improved interfacial adhesion promoted by compatibilizer.

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Section: Ftir Characterizationsupporting

confidence: 64%

Reinforcing performance of recycled PET microfibrils in comparison with liquid crystalline polymer for polypropylene based composite fibers

2012

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“…[1][2][3][4] The triblock copolymers in these studies had styrene end blocks and an ethylene/butylene midblock (SEBS) that was grafted with maleic anhydride. Improved properties with these and other blends of PET that incorporated functionalized polymers [5][6][7][8] were consistent with in situ formation of a graft copolymer by reaction with PET end groups. It appeared that the graft copolymer acted as an emulsifier to decrease the interfacial tension and promote adhesion.…”

Section: Introductionmentioning

confidence: 61%

Mechanical properties of poly(ethylene terephthalate) modified with functionalized polymers

Pawlak

Perkins

Massey

et al. 1999

J. Appl. Polym. Sci.

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This study examined the effect of blending poly(ethylene terephthalate) (PET) with 5% of a functionalized polymer. The blends were characterized by particle size and size distribution, unnotched tensile behavior, toughness, and notch sensitivity. The improved properties of blends that incorporated a functionalized elastomer were consistent with in situ formation of a graft copolymer by reaction with PET end groups. Triblock copolymers were examined that had styrene end blocks and an ethylene/ butylene midblock (SEBS) with grafted maleic anhydride. The present study extended previous investigations that focused on level of grafting to examine the effects of component molecular weight and PET hydroxyl-to-carboxyl end-group ratio. Increasing the molecular weight of the SEBS and decreasing the hydroxyl-to-carboxyl ratio of the PET increased the effectiveness of the SEBS. In addition, a mix of an unfunctionalized SEBS with a functionalized SEBS was more effective than a single SEBS with the same total anhydride content. The same elastomers were the most effective for modifying a lower molecular weight PET (intrinsic viscosity 0.73) and a higher molecular weight PET (intrinsic viscosity 0.95). Some functionalized polypropylenes included in the study did not enhance the properties of PET.

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“…Akkapeddi et al 6,7) reported a significant improvement in toughness and heat resistance of the PET/HDPE (1.8 : 1 wt.-%) blends at a 10 wt.-% E/ GMA level compared to the uncompatibilized blend. Penco et al 8) have shown that the impact properties of PET can be improved by adding an ethylene/ethyl acrylate/glycidyl methacrylate terpolymer (E/EA/GMA). These good results are related to chemical interactions between the compatibilizer reactive groups (epoxides) and PET end groups (carboxyls and hydroxyls).…”

Section: Introductionmentioning

confidence: 99%

Reactive compatibilization of HDPE/PET blends by glycidyl methacrylate functionalized polyolefins

Piétrasanta¹,

Robin²,

Torres³

et al. 1999

Macromol. Chem. Phys.

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SUMMARY: Blends of high-density polyethylene (HDPE) and poly(ethylene terephthalate) (PET) in weight compositions of 20/80, 40/60, 60/40 and 80/20 were modified with glycidyl methacrylate functionalized polyolefins with the aim of improving the compatibility and in particular elongation and impact strength. The compatibilizers used were ethylene/glycidyl methacrylate copolymers (E/GMA) and ethylene/ethyl acrylate/ glycidyl methacrylate terpolymers (E/EA/GMA) with variable contents of reactive functions (1 to 8 wt.-% of glycidyl methacrylate). The effects of the compatibilizers were evaluated by studying the mechanical properties and the morphology of the blends. The addition of 5 wt.-% of functionalized polyolefins was found sufficient to improve ductility and impact strength of all compositions. A more pronounced compatibilizing effect was obtained with the functionalized terpolymer containing the smallest amount of glycidyl methacrylate. With this emulsifying agent, elongation at break is increased by a factor of four for the compositions near the inversion of phases. However, the main interest of this work is that it provides a compatibilization of immiscible blends of polyolefin and polyester by injection moulding. This melt processing is very interesting from an industrial point of view because it proves that materials with good mechanical properties can be obtained in one step of processing.

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High‐impact poly(ethylene terephthalate) blends

Cited by 45 publications

References 14 publications

Reinforcing performance of recycled PET microfibrils in comparison with liquid crystalline polymer for polypropylene based composite fibers

Reinforcing performance of recycled PET microfibrils in comparison with liquid crystalline polymer for polypropylene based composite fibers

Mechanical properties of poly(ethylene terephthalate) modified with functionalized polymers

Reactive compatibilization of HDPE/PET blends by glycidyl methacrylate functionalized polyolefins

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