Synthesis and characterization of a new block copolymer: Poly(butylene terephthalate‐<i>co</i>‐olefin) application on PP/PBT blend and PBT homopolymer

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

doi:10.1002/app.1995.070550201

Cited by 10 publications

(4 citation statements)

References 21 publications

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“…According to the work published earlier, the heat of fusion of 100% crystalline PCL is 135 J/g 17 and that of PBT is 85.75 J/g. 18 The relative contributions to the heat of fusion for the respective copolymers have been calculated as per weight ratios of PCL and c-PBT, respectively, depending on the crystal structure in the resultant copolymer (as obtained from the WAXD, Figure 6).…”

Section: Methodsmentioning

confidence: 99%

“…Crystallinity of the homopolymers has been calculated according to the following relation and tabulated in Table : where Δ H f is the measured heat of fusion for the sample and Δ H f 0 is the heat of fusion for 100% crystalline polymer. According to the work published earlier, the heat of fusion of 100% crystalline PCL is 135 J/g and that of PBT is 85.75 J/g . The relative contributions to the heat of fusion for the respective copolymers have been calculated as per weight ratios of PCL and c-PBT, respectively, depending on the crystal structure in the resultant copolymer (as obtained from the WAXD, Figure ).…”

Section: Methodsmentioning

confidence: 99%

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In-Situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and ε-Caprolactone

2004

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Copolyesters were synthesized by using ring-opening polymerization of cyclic poly(butylene terephthalate) oligomers (c-PBT) and -caprolactone monomer (CL) in the presence of stannoxane catalyst at an elevated temperature. The in-situ copolymerization was conducted with various c-PBT/CL feed ratios. The copolyesters were characterized by GPC, NMR, and FT-IR techniques. Phase separation and the relaxation behavior of the resultant copolyesters were investigated by DSC, DMTA, and dielectric spectroscopy measurements. Mechanical properties (stress-strain behavior) are also reported and can be adjusted by varying the -caprolactone content of the copolymer.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

In-Situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and ε-Caprolactone

2004

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“…Poly(ethylene glycol), [27][28][29][30] poly(propylene glycol), [31,32] and poly-(tetramethylene glycol) [29,[33][34][35][36][37][38] are the most commonly used polyethers in polycondensation synthesis with PET monomers. Other compounds utilised include perfluoropolyether, [39][40][41] polyolefins, [42,43] or poly-(dimethyl siloxane). [44][45][46] A method of polycondensation reaction leading to interesting polycondensates has been performed by Deleens using the polyesterification of polycaprolactame and polyethers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Poly(ethylene terephthalate)‐block‐Poly(tetramethylene oxide) Copolymer by Direct Polyesterification of Reactive Oligomers

Saint‐Loup

Robin

Boutevin

2003

Macro Chemistry & Physics

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The object of this study was the synthesis of thermoplastic elastomer compounds by direct copolyesterification of reactive oligomers of poly(ethylene terephthalate) (PET) and of poly(tetramethylene oxide) (PTMO). PET was glycolysed to synthesise hydroxytelechelic oligomers of PET. Commercially available hydroxytelechelic PTMO was modified to synthesise carboxytelechelic oligomers. The chemical structures of these oligomers were investigated by 1H NMR and size exclusion chromatography. Multiblock poly(ester‐ether) was then obtained by polyesterification of the hydroxytelechelic and carboxytelechelic oligomers, using different catalysts and different reaction conditions. The best stoichiometric ratio was determined to lead to the highest Mn. The chemical structure of the synthesised poly(ester‐ether) was investigated by size exclusion chromatography and 1H NMR. The thermal and thermomechanical behaviour of the synthesised poly(ester‐ether) was investigated by differential scanning calorimetry and by dynamic mechanical analysis, and showed a thermoplastic elastomer behaviour. This product could also be an interesting way of chemically recycling PET waste.Polyesterification of hydroxytelechelic PET with carboxytelechelic PTMO.magnified imagePolyesterification of hydroxytelechelic PET with carboxytelechelic PTMO.

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“…Poly(ethylene glycol), [22][23][24][25] poly(propylene oxide) [26,27] and poly(tetramethylene glycol) [24,[28][29][30][31][32][33] are the polyethers most commonly used in polycondensation synthesis with PET monomers. Other compounds should also be mentioned, such as perfluoropolyethers, [34][35][36] polyolefins [37,38] and poly(dimethyl siloxanes). [39][40][41] The synthesis of poly(ester-ether)s coming from PETand polyether oligomers has been the subject of several patents [42,43] and these product have been commercialized by Dupont under the trademark Hytrel 1 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Poly[(ethylene terephthalate)‐co‐(ε‐caprolactone)]‐Poly(propylene oxide) Block Copolyester by Direct Polyesterification of Reactive Oligomers

Saint‐Loup¹,

Robin²

2005

Macro Chemistry & Physics

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Summary: The objective of this study was to synthesize thermoplastic elastomers by the direct copolyesterification of reactive oligomers of poly[(ethylene terephthalate)‐co‐(ε‐caprolactone)] (PET) and poly(propylene oxide) (PPO). The synthesis of hard segment oligomers was achieved in two steps. The first step consisted of the glycolysis of PET leading to α,ω‐hydroxyl functionalized oligomers. The second step corresponded to the ring opening polymerization of ε‐caprolactone onto the hydroxyl end groups of the PET oligomers. Commercially available hydroxytelechelic poly(propylene oxide) was modified to obtain carboxytelechelic poly(propylene oxide). The chemical structure of the product was investigated by 1H NMR and size exclusion chromatography (SEC). Multiblock poly(ester‐ether) was then synthesized by polyesterification of hydroxytelechelic poly[(ethylene terephthalate)‐co‐(ε‐caprolactone)] with carboxytelechelic poly(propylene oxide) oligomers, using different catalysts and reaction conditions. The best stoichiometric ratio for the reaction was determined in order to obtain the highest possible $\overline M _{\rm n}$. The chemical structure of the synthesized poly(ester‐ether) was investigated by size exclusion chromatography and 1H NMR. The thermal and thermomechanical behavior of the synthesized poly(ester‐ether) was investigated by differential scanning calorimetry and dynamic mechanical analysis, which showed that the poly(ester‐ether) behaved as a thermoplastic elastomer. This product could also be an interesting way for chemical recycling of PET waste.Synthesis of multiblock co‐poly(ester‐ether).magnified imageSynthesis of multiblock co‐poly(ester‐ether).

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Synthesis and characterization of a new block copolymer: Poly(butylene terephthalate‐co‐olefin) application on PP/PBT blend and PBT homopolymer

Cited by 10 publications

References 21 publications

In-Situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and ε-Caprolactone

In-Situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and ε-Caprolactone

Synthesis of Poly(ethylene terephthalate)‐block‐Poly(tetramethylene oxide) Copolymer by Direct Polyesterification of Reactive Oligomers

Synthesis of Poly[(ethylene terephthalate)‐co‐(ε‐caprolactone)]‐Poly(propylene oxide) Block Copolyester by Direct Polyesterification of Reactive Oligomers

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