The Reaction of Isotactic Polypropylene with Maleic Anhydride and Ionic Crosslinking of the Obtained Products

Ide, Fumio; Kodama, Tsuneo; Hasegawa, Akira

doi:10.1295/koron1944.25.167

Cited by 21 publications

(6 citation statements)

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“…Solid-phase modification of polypropylene with maleic anhydride was carried out by reacting maleic anhydride with powdered PP in the presence of a peroxide (BPB) catalyst below the melting temperature of PP (8)(9)(10). A batch reactor with mechanical stirring was used and the reaction proceeded in inert atmosphere.…”

Section: Solid-phase-modified Polypropylenementioning

confidence: 99%

Studies on the Effect of Reactive Polypropylene on the Properties of Filled Polyolefin Composites. Part 1. Advantages of Solid-Phase-Grafted Maleated Polypropylene Over Melt-Phase-Modified Polymers

Khünová

Zámorský

1993

Polymer-Plastics Technology and Engineering

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The results summarize the problem associated with grafting of maleic anhydride (MAH) on polypropylene (PP) in the melt phase and also describe a new method for grafting PP with MAH in the solid phase. The effectiveness of the solid phase modified maleated polypropylene (MAH-PP) as interphase modifier has been 290 KHUNOVA AND ZAMORSKY documented by comparing the properties of calcium carbonate filled polypropylene composites (PP-CaC03) treated with solid phase modified MAH-PP with that of the melt phase modified MAH-PP treated composites. The solid-phase modification of PP by MAH is nontoxic and is also free from unreacted MAH. The modifier also improves the tensile strength and impact resistance of unmodified PP-CaC03 composites.

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Section: Solid-phase-modified Polypropylenementioning

confidence: 99%

Studies on the Effect of Reactive Polypropylene on the Properties of Filled Polyolefin Composites. Part 1. Advantages of Solid-Phase-Grafted Maleated Polypropylene Over Melt-Phase-Modified Polymers

Khünová

Zámorský

1993

Polymer-Plastics Technology and Engineering

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“…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][13][14][15][16][17][18][19][20][21][22][23][24] or in solution. 22,[25][26][27][28] Reaction in the melt, by reactive processing, has been the preferred method because of the low cost and easy operation involved. Continuous or discontinuous mixing equipment is used as chemical reactor in reactive processing.…”

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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“…Ide et al2 studied the grafting of PP with maleic anhydride in a xylene solution, using benzoyl peroxide as the initiator. Little evidence of degradation of the polymer product was found.…”

Section: Introductionmentioning

confidence: 99%

Reactive extrusion of polypropylene with supercritical carbon dioxide: Free radical grafting of maleic anhydride

Dorscht

Tzoganakis

2002

J of Applied Polymer Sci

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A reactive extrusion process for the functionalization of polypropylene with maleic anhydride in the presence of supercritical carbon dioxide was studied. Supercritical carbon dioxide was used in this reactive extrusion system to reduce the viscosity of the polypropylene melt phase by forming a polymer-gas solution in order to promote better mixing of the reactants. Subsequently, the effect of supercritical carbon dioxide on the level of grafting, product homogeneity, and molecular weight was evaluated. Analysis of the products revealed that the use of supercritical carbon dioxide led to improved grafting when high levels of maleic anhydride were used. The experimental results showed no evidence of an improvement in the homogeneity of the product, while melt flow rate measurements showed a reduction in the degradation of polypropylene during the grafting reaction when low levels of maleic anhydride were employed.

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The Reaction of Isotactic Polypropylene with Maleic Anhydride and Ionic Crosslinking of the Obtained Products

Cited by 21 publications

References 0 publications

Studies on the Effect of Reactive Polypropylene on the Properties of Filled Polyolefin Composites. Part 1. Advantages of Solid-Phase-Grafted Maleated Polypropylene Over Melt-Phase-Modified Polymers

Studies on the Effect of Reactive Polypropylene on the Properties of Filled Polyolefin Composites. Part 1. Advantages of Solid-Phase-Grafted Maleated Polypropylene Over Melt-Phase-Modified Polymers

Grafting of maleic anhydride onto polypropylene by reactive extrusion

Reactive extrusion of polypropylene with supercritical carbon dioxide: Free radical grafting of maleic anhydride

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