Properties of poly(ethylene terephthalate) and maleic anhydride‐grafted polypropylene blends by reactive processing

Yoon, Kwan Han; Lee, Hyoung Wook; Park, O. Ok

doi:10.1002/(sici)1097-4628(19981003)70:2<389::aid-app20>3.3.co;2-e

Cited by 8 publications

(10 citation statements)

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“…[10][11][12] A wide range of reactive compatibilizers have been effectively tested and the first successful one used was a styrene-butadiene-styrene (SBS) block copolymer. [13,14] Maleic-anhydride-grafted polyolefins, [15][16][17] acrylic acid copolymers, [18] ethylene glycidyl methacrylate (EGMA) copolymers, [19,20] and ethylene/ethyl acrylate glycidyl methacrylate terpolymers (E-EAGMA) [21] are other compatibilizers that have been used for polyolefin/PET blends. By considering the work published so far, it should be stressed that there is no ready answer to which compatibilization approach is the best for polyolefin/PET blends.…”

Section: Introductionmentioning

confidence: 99%

Waste and Virgin LDPE/PET Blends Compatibilized with an Ethylene‐Butyl Acrylate‐Glycidyl Methacrylate (EBAGMA) Terpolymer, 1

Kaci¹,

Benhamida²,

Cimmino³

et al. 2005

Macro Materials & Eng

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Summary: This work is aimed at studying the morphology and the mechanical properties of blends of low density polyethylene (LDPE) and poly(ethylene terephthalate) (PET) (10, 20, and 30 wt.‐% of PET), obtained as both virgin polymers and urban plastic waste, and the effect of a terpolymer of ethylene‐butyl acrylate‐glycidyl methacrylate (EBAGMA) as a compatibilizer. LDPE and PET are blended in a single screw extruder twice; the first extrusion to homogenize the two components, and the second to improve the compatibilization degree when the EBAGMA terpolymer is applied. Scanning electron microscopy (SEM) analysis shows that the fractured surface of both the virgin polymer and the waste binary blends is characterized by a gross phase segregation morphology that leads to the formation of large PET aggregates (10–50 µm). Furthermore, a sharp decrease in the elongation at break and impact strength is observed, which denotes the brittleness of the binary blends. The addition of the EBAGMA terpolymer to the binary LDPE/PET blends reduces the size of the PET inclusions to 1–5 µm with a finer dispersion, as a result of an improvement of the interfacial adhesion strength between LDPE and PET. Consequently, increases of the tensile properties and impact strength are observed.

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Section: Introductionmentioning

confidence: 99%

Waste and Virgin LDPE/PET Blends Compatibilized with an Ethylene‐Butyl Acrylate‐Glycidyl Methacrylate (EBAGMA) Terpolymer, 1

Kaci¹,

Benhamida²,

Cimmino³

et al. 2005

Macro Materials & Eng

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“…[5,6] In this respect, a considerable amount of work has been published on compatibility of PET/polyolefin systems [7][8][9] using a wide range of reactive compatibilizers, including: styrene/butadiene/ styrene (SBS) block copolymers, [10,11] maleic-anhydridegrafted polyolefins, [12][13][14] acrylic acid copolymers, [15,16] ethylene/glycidyl methacrylate (E-GMA) copolymers, [17][18][19] and ethylene/ethyl acrylate/glycidyl methacrylate terpolymers (E-EAGMA). [20] More recently, the functionalization of polyolefins by melt radical grafting with glycidyl methacrylate (GMA) has gained increasing attention due to the high reactivity of the GMA epoxide groups toward carboxyl, amine and hydroxyl functional groups.…”

Section: Introductionmentioning

confidence: 99%

Melt Mixing of Ethylene/Butyl Acrylate/Glycidyl Methacrylate Terpolymers with LDPE and PET

Benhamida¹,

Kaci²,

Cimmino³

et al. 2009

Macro Materials & Eng

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The chemical modification by melt‐mixing of an EBAGMA terpolymer with LDPE and PET was investigated with the aim to use these EBAGMA/LDPE and EBAGMA/PET blends (in equal weight quantities) as compatibilizer master batches to improve the compatibility of the LDPE/PET system. It is shown that when the EBAGMA terpolymer is melt blended with LDPE, almost 40% of the initial amount of EBAGMA is linked to the LDPE backbone. In contrast, in the case of EBAGMA/PET, FT‐IR spectra indicate the total reactivity between the two components through the reaction of the epoxy group of EBAGMA with the PET terminal groups. SEM analysis shows that both master batches present two well‐interconnected phases.magnified image

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“…One of the most common methods to achieve the polyolefin modification with MA is the reactive process in the presence of a peroxide. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] A comprehensive review of the free radical reactions mechanism involved in this process was published by Moad. 16 The main advantage of such reactive process are the absence of solvent, the short reaction time and it is a continuous process.…”

Section: Introductionmentioning

confidence: 99%

Grafting of tetrahydrophthalic and maleic anhydride onto polyolefins in solution

Campos

Fantini

Petri

2004

J. Braz. Chem. Soc.

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Polietileno de baixa densidade (LLDPE) com comonômeros 1-buteno e 1-octeno foram funcionalizados com anidrido tetrahidroftálico (THA) e anidrido maléico (MA) em solução na presença de peróxido de benzoíla (BPO), de acordo com planejamentos fatoriais. As variáveis testadas foram concentração de anidrido, concentração de peróxido, tempo de reação e tipo de comonômero. As formulações foram analisadas por espectroscopia vibracional no infravermelho FTIR. Na funcionalização com THA o efeito principal tempo de reação foi significativo, assim como, a interação deste com a concentração de THA, enquanto que no caso do MA as concentrações de BPO e MA foram significativas. Poliolefinas modificadas com teores semelhantes de THA e MA foram analisadas por calorimetria exploratória diferencial (DSC) e por difração de raios X (XRD). Amostras modificadas com THA e MA apresentaram redução na temperatura de fusão de 4,3 °C e 1,4 °C, respectivamente, com relação ao polímero original. Alterações devido à funcionalização também foram evidenciadas por forte redução nas áreas dos picos de difração relativos aos planos cristalinos (110) e (200), corroborando com os dados de calorimetria exploratória diferencial (DSC).Tetrahydrophthalic (THA) and maleic (MA) anhydrides were grafted onto linear low density polyethylene with comonomer 1-butene and 1-octene (LLDPE) in solution in the presence of benzoyl peroxide (BPO) following experimental designs, where anhydride and BPO concentrations, type of comonomer and reaction time were varied. The formulations were analyzed by Fourier transform infrared spectroscopy (FTIR). In the case of THA modified polyolefins, the time of reaction and the interaction between time of reaction and THA concentration influenced the process, whereas the MA and BPO concentrations influenced the grafting of MA onto polyolefins. THA and MA modified polyolefin samples with similar grafting contents were analized by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). THA and MA functionalized polyolefins presented reduction in the melting temperature of 4.3 °C and 1.4 °C, respectively, comparing with the original polymer. These effects corroborate with the strong reduction in the areas of the diffraction peaks (110) and (200) after the grafting process.

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Properties of poly(ethylene terephthalate) and maleic anhydride‐grafted polypropylene blends by reactive processing

Cited by 8 publications

References 0 publications

Waste and Virgin LDPE/PET Blends Compatibilized with an Ethylene‐Butyl Acrylate‐Glycidyl Methacrylate (EBAGMA) Terpolymer, 1

Waste and Virgin LDPE/PET Blends Compatibilized with an Ethylene‐Butyl Acrylate‐Glycidyl Methacrylate (EBAGMA) Terpolymer, 1

Melt Mixing of Ethylene/Butyl Acrylate/Glycidyl Methacrylate Terpolymers with LDPE and PET

Grafting of tetrahydrophthalic and maleic anhydride onto polyolefins in solution

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