Reactive compatibilization of the poly(butylene terephthalate)–EVA blend by maleic anhydride. II. Correlations among gel contents, grafting yields, and mechanical properties

Kim, Seon-Jun; Kang, Cheul-Jung; Chowdhury, Subhendu Ray; Cho, Won‐Jei; Ha, Chang‐Sik

doi:10.1002/app.12245

Cited by 17 publications

(3 citation statements)

References 15 publications

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“…In the literature, it was stated that there could be two different interactions between the MA and the hydroxyl end group of butylene terephthalate in the hard segment of TPE. The first one is the intermolecular dipole–dipole interaction between the carbonyl oxygen in MA and the hydrogen in the hydroxyl end group of butylene terephthalate.…”

Section: Resultsmentioning

confidence: 65%

Use of maleic anhydride compatibilization to improve toughness and other properties of polylactide blended with thermoplastic elastomers

Kaynak

Meyva²

2014

Polym. Adv. Technol.

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Polylactide (PLA) being a very brittle biopolymer could be toughened by blending with thermoplastic elastomers such as thermoplastic polyurethane elastomer (TPU) and thermoplastic polyester elastomer (TPE); unfortunately, these blends are immiscible forming round domains in the PLA matrix. Therefore, the purpose of this study was to investigate the effects of using maleic anhydride (MA) compatibilization on the toughness and other properties of PLA blended with TPU and TPE. MA grafting on the PLA backbone (PLA-g-MA) was prepared separately by reactive extrusion and added during melt blending of PLA/thermoplastic elastomers. IR spectroscopy revealed that MA graft might interact with the functional groups present in the hard segments of TPU and TPE domains via primary chemical reactions, so that higher level of compatibilization could be obtained. SEM studies indicated that PLA-g-MA compatibilization also decreased the size of elastomeric domains leading to higher level of surface area for more interfacial interactions. Toughness tests revealed that Charpy impact toughness and fracture toughness (K IC and G IC ) of inherently brittle PLA increased enormously when the blends were compatibilized with PLA-g-MA. For instance, G IC fracture toughness of PLA increased as much as 166%. It was also observed that PLA-g-MA compatibilization resulted in no detrimental effects on the other mechanical and thermal properties of PLA blends.

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Section: Resultsmentioning

confidence: 65%

Use of maleic anhydride compatibilization to improve toughness and other properties of polylactide blended with thermoplastic elastomers

Kaynak

Meyva²

2014

Polym. Adv. Technol.

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“…In other cases,19–22 maleic anhydride modified EVA was used in the compatibilization of linear low density polyethylene (LLDPE)/PBT blends19 and in EVA/PBT blends 20–22. Maleic anhydride and acrylic acid modified polymers were also used by other authors23 for the compatibilization of LDPE/PBT blends.…”

Section: Introductionmentioning

confidence: 99%

Reactive Compatibilization of PBT/EVA Blends with an Ethylene‐Acrylic Acid Copolymer and a Low Molar Mass Bis‐Oxazoline

Scaffaro

Mantia

Castronovo

2004

Macro Chemistry & Physics

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Summary: Polyesters and polyolefins form highly incompatible blends with poor properties and gross morphology that hinder any practical applications. In this work, the possibility to compatibilize an incompatible blend of poly(butylene terephthalate) (PBT) with ethylene vinyl acetate (EVA) by adding a bis‐oxazoline compound, 2,2′‐(1,3‐phenylene)‐bis(2‐oxazoline) (PBO), and an ethylene acrylic acid copolymer (EAA) as compatibilizer precursors has been studied. The results indicate that the binary uncompatibilized blends show poor mechanical properties and a bad morphology with scarce adhesion between the phases. The situation is only slightly improved when the EAA is added while the best performance is achieved when quaternary PBT/EVA/EAA/PBO blends are prepared. In this latter case the elongation at break and the impact strength are doubled and the morphology is deeply improved. The formation of EAA‐g‐(PBO)PBT copolymers in the presence of PBO can be invoked to explain the results and it is demonstrated that the eventual chain extension of PBT or EAA is negligible.

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“…Fischer reported on the properties of ethyylene propylene diene monomer (EPDM)/PP thermoplastic blends with partial cross-linking. Recently, many researchers evaluated the mechanical properties of different blends, − including blends based on polyethylene − and ethyl vinyl acetate. , Bhattacharyya et al evaluated the compatibilizing efficiency of polyamide 6/ethylene vinyl acetate blends upon ionomer incorporation by morphological and mechanical property studies. The compatibilization effect of maleic anhydride modified compatbilizers also was evaluated.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Theory with Experimental Data for Nanoclay-Filled TPU/PP Blend

Kannan

Bhagawan

Thomas

et al. 2012

Ind. Eng. Chem. Res.

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The mechanical properties of thermoplastic polyurethane (TPU)/polypropylene (PP) blends were investigated with special reference to the effect of type of polyurethane (ester-or ether-based), blend ratio, compatibilizer, and sequence addition of nanoclay. Tensile strength, stress at different elongations, flexural modulus, and abrasion resistance were analyzed and correlated with morphology. Blends of nanoclay filled thermoplastic polyurethane (TPU)/polypropylene (PP) of various compositions were evaluated by dynamic mechanical properties such as storage modulus (E′), loss modulus (E″), and dissipation factor (tan δ), at a frequency of 10 Hz over a temperature range from −100 to 200 °C. Finally different theoretical models were used to compare the experimental results with theoretical predictions.

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Reactive compatibilization of the poly(butylene terephthalate)–EVA blend by maleic anhydride. II. Correlations among gel contents, grafting yields, and mechanical properties

Cited by 17 publications

References 15 publications

Use of maleic anhydride compatibilization to improve toughness and other properties of polylactide blended with thermoplastic elastomers

Use of maleic anhydride compatibilization to improve toughness and other properties of polylactide blended with thermoplastic elastomers

Reactive Compatibilization of PBT/EVA Blends with an Ethylene‐Acrylic Acid Copolymer and a Low Molar Mass Bis‐Oxazoline

Comparison of Theory with Experimental Data for Nanoclay-Filled TPU/PP Blend

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