Transkristalline Morphologie in Polyethylen niederer Dichte

Wendt, U.

doi:10.1002/actp.1988.010390512

Acta Polymerica

1988

DOI: 10.1002/actp.1988.010390512

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Transkristalline Morphologie in Polyethylen niederer Dichte

U. Wendt

Abstract: Als Modellfall für die in einer Polymerschmelze beim Abkühlen entstehende Beeinflussung der Phasengrenzschicht wird die transkristalline Morphologie von PE‐ND mittels Lichtmikroskopie, REM und DSC hinsichtlich Entstehungsbedingungen, Struktur und Morphologie untersucht. Die unterschiedliche Nukleierungswirkung von Keimen, die sphärolithische bzw. transkristalline Morphologie induzieren, ist mittels DSC nicht nachweisbar.

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1993

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Cited by 3 publications

References 22 publications

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Effect of solid–state modified polypropylene on the physical performance of sawdust–filled polypropylene composites

Sain

Kokta

1993

Adv Polym Technol

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The influence of solid-state modified polypropylene on the physical performance of uncoated or thermoset-resin coated sawdust-filled polypropylene composites was studied. The effect of composition of the composites on tensile strength, Young's modulus, tensile toughness, elongation, and impact strength was determined through two 23 factorial rotatable designs. The results of this investigation show that both the rn-phenylene dismaleimide-modified polypropylene precompounded sawdust as well as solid-state modified maleated polypropylene can be successfully used to prepare sawdust-filled polypropylene composites with good tensile strength. On the whole, this property improved compared to that of unfilled polypropylene. According to the analysis of factorial design, the optimum composition to prepare a composite with highest tensile strength within the experimental range was 30-40 wt% phenolic resin coated sawdust together with 4-6 wt% solid-state modified maleated polypropylene; while the product composition for the worst design was a combination of high amount of phenolic resin modified polypropylene with phenolic resin coated sawdust. The experimental design also concluded that effect of compositions on impact strength of composites was not significant in most of the cases. Overall, the empirical models constructed in this study provided a good approximation to actual experimental measurements; we are encouraged to extend this approach to processing conditions for manufacturing these composites.

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Effect of solid–state modified polypropylene on the physical performance of sawdust–filled polypropylene composites

Sain

Kokta

1993

Adv Polym Technol

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Thermo-optical, DSC and microfractographic investigation of PE-PE mixtures

Wendt¹

1991

J Mater Sci

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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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Transkristalline Morphologie in Polyethylen niederer Dichte

Cited by 3 publications

References 22 publications

Effect of solid–state modified polypropylene on the physical performance of sawdust–filled polypropylene composites

Effect of solid–state modified polypropylene on the physical performance of sawdust–filled polypropylene composites

Thermo-optical, DSC and microfractographic investigation of PE-PE mixtures

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

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