Preliminary Experiments of Grafting of Maleic Anhydride onto Polypropylene in Molten State by Use of Screw Extruder.

Fujiyama, Mitsuyoshi; Wakino, Tetsuo; Wachi, Hiroshi; Tani, Kazuo

doi:10.1295/koron.49.87

Cited by 14 publications

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“…Therefore, optimum feed composition 0.5 wt % of IAH and L101/IAH molar ratio 0.77 was used for reaching high grafting efficiency and low amount of undesired collateral reactions as published elsewhere . Unreacted IAH was removed by heating raw PLA‐g‐IAH in air oven at 130 °C for 1 h as published by Fujiyama et al . According to eq.…”

Section: Methodsmentioning

confidence: 99%

Online monitoring of reactive compatiblization of poly(lactic acid)/polyamide 6 blend with different compatibilizers

Petruš

Kučera

Jančář

2019

J of Applied Polymer Sci

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Improvement of poly(lactic acid)/polyamide 6 (PLA/PA6) miscibility is approached by reactive compatibilization with using different reactive agents. Specifically, compatibilizing efficiency of commercially available Joncryl ADR‐4368 (Joncryl) and free‐radical initiator 2,5‐dimethyl‐2,5‐bis(tert‐butylperoxy)hexane (L101) is compared to that of laboratory synthesized compatibilizers (poly(lactic acid) grafted with itaconic anhydride (PLA‐g‐IAH) and poly(itaconic anhydride) (PIAH) by online rheology monitoring in internal mixer and oscillatory rheometer. The change of morphology and particle‐size distribution is evaluated by scanning electron microscopy (SEM), the extent of PLA‐PA6 miscibility is determined by differential scanning calorimetry (DSC), and newly formed polymer phases are identified by high‐resolution thermogravimetric analysis (HR‐TGA) and solvent extraction in formic acid. Although Joncryl exhibits the most promising results in PLA‐PA6 compatibility, other compatibilizers also exhibit specific benefits for PLA/PA6 blend or individual polymers. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48005.

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Section: Methodsmentioning

confidence: 99%

Online monitoring of reactive compatiblization of poly(lactic acid)/polyamide 6 blend with different compatibilizers

Petruš

Kučera

Jančář

2019

J of Applied Polymer Sci

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“…The granules were dried at 80°C for 2 days to remove unreacted maleic anhydride. 8,9 Blend compositions of 1, 2, and 3 wt % MAgrafted ABS at 35 wt % were prepared with 65 wt % PC; these blends were coded respectively as 1MP65, 2MP65, and 3MP65. PC/ABS blends were also prepared at similar 65 wt % PC level and coded as P65.…”

Section: Methodsmentioning

confidence: 99%

Effect of functionality levels and compatibility of polycarbonate blends with maleic anhydride grafted ABS

Balakrishnan

Neelakantan

Jaisankar

1999

J. Appl. Polym. Sci.

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ABS was melt grafted with maleic anhydride at three different levels of 1, 2, and 3 wt %. These three different modified ABSs were melt blended with polycarbonate using a single-screw extruder to choose a suitable maleic anhydride grafting level on ABS for better performance. For the compatibility study, binary blends of polycarbonate with ABS and maleic anhydride-grafted ABS were prepared over the entire range of compositions. Compatibility of these blends was studied using a Dynamic Mechanical Analyzer and by Differential Scanning Calorimetry. Both techniques suggest more partial compatibility for modified blend systems. In addition to this, DSC thermograms show multiple peaks between the transition points of ABS fractions and polycarbonate fractions for the polycarbonate/maleic anhydride-grafted ABS blends. These multiple peaks are characteristic of better partial compatibility with fine microstructure.

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“…Maleic anhydride grafting onto polypropylene (PP) has been carried out with the aim of achieving compatibility between polar and nonpolar polymers,1–4 coupling between polypropylene and inorganic fillers,5–9 and adhesion to metals 10. These reactions are usually carried out in the presence of organic peroxides and can be conducted in the solid state,11, 12 in the melt,12–24 or in solution 22, 25–28. Reaction in the melt, by reactive processing, has been the preferred method because of the low cost and easy operation involved.…”

Section: Introductionmentioning

confidence: 99%

“…Grafting reactions of maleic anhydride onto PP, in the presence of peroxides, have been carried out both in torque rheometers12, 15, 22, 23 and in both single‐screw15–19 and twin‐screw extruders 13, 20, 21. In the reactive extrusion process polymer modification reactions and processing are carried out simultaneously 29…”

Section: Introductionmentioning

confidence: 99%

Grafting of maleic anhydride onto polypropylene by reactive extrusion

Bettini

Agnelli

2002

J of Applied Polymer Sci

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Maleic anhydride grafting onto polypropylene was conducted in a twinscrew extruder according to an experimental design in which the maleic anhydride and peroxide concentrations were varied. The modified polypropylene was characterized by FTIR spectroscopy, melt-flow index measurements, size-exclusion chromatography, differential scanning calorimetry, and nuclear magnetic resonance. The results showed that only the independent variable peroxide concentration influenced the amount of reacted maleic anhydride, whereas the two variables studied influenced the molecular weight of the grafted polypropylene.

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Preliminary Experiments of Grafting of Maleic Anhydride onto Polypropylene in Molten State by Use of Screw Extruder.

Cited by 14 publications

References 0 publications

Online monitoring of reactive compatiblization of poly(lactic acid)/polyamide 6 blend with different compatibilizers

Online monitoring of reactive compatiblization of poly(lactic acid)/polyamide 6 blend with different compatibilizers

Effect of functionality levels and compatibility of polycarbonate blends with maleic anhydride grafted ABS

Grafting of maleic anhydride onto polypropylene by reactive extrusion

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