Influence of molecular weight on the fracture properties of aliphatic polyketone terpolymers

Zuiderduin, W.C.J.; Homminga, Douwe; Huétink, Han; Gaymans, R.J.

doi:10.1016/s0032-3861(03)00635-9

Cited by 21 publications

(22 citation statements)

References 22 publications

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“…The temperature rise during fracture of specimens of thickness 4 mm was monitored using an infrared camera as specified elsewhere [8]. …”

Section: Infrared Thermographymentioning

confidence: 99%

“…Semicrystalline polymers have a two phase morphology and the plastic deformation invariably takes place in an inhomogeneous manner. The yielding in semi crystalline polymers is very often accompanied by necking with an appreciable temperature rise [4][5][6][7][8]. For PE and PP it has been shown that the assumption that below the yield strain that the deformation in tensile is just nonlinear elastic, it too simple [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Pre-yield tensile set of a semi-crystalline polymer, its blend and composite

2007

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Tensile set was studied at low strains on polypropylene, aliphatic polyketone, rubber toughened blends and CaCO 3 particle toughened composites. The rubber in the rubber toughened blends had a particle size of 0.7 lm. The CaCO 3 particles had a size of 0.7 lm and had been coated with stearic acid.Step-cyclic loading was applied in 1% strain incrementals at a strain rate of 10 -2 s -1 . The maximum strain applied was 20%. The temperature of the test bar was studied with an infra-red camera. Pre-yield deformation is normally assumed to take place in a nonlinear elastic manner. However, for polypropylene and polyketone elastoplastic deformation starts at low strains. For PP the onset of tensile set is at very low strains and increases with strain. The tensile set at the yield point was only 50% and at the drawing strain 100%. Polyketone had a similar tensile set development but shifted to slightly higher strains. Here too the tensile set at the yield point was about 50% and at the drawing strain 100%. The temperature of the non yielded material was found to rise in polyketone a 7°C.The rubber toughened blends had at low strains a higher tensile set, but after the yield strain the set was similar to the base polymer. At 5% strain the tensile set increased with rubber content. The sub micron CaCO 3 particle toughened composites increased the tensile set too. The tensile set is a simple technique for studying the pre-yield behaviour of multi phase systems.

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“…The temperature rise during fracture of specimens of thickness 4 mm was monitored using an infrared camera as specified elsewhere [8]. …”

Section: Infrared Thermographymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pre-yield tensile set of a semi-crystalline polymer, its blend and composite

2007

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“…At higher contents the rubber is more effective. With the rubber blends the T bd is lowered far below the glass transition temperature of aPK [28]. Thus the glass transition of the aPK cannot be the limit for toughening.…”

Section: Impact Resistancementioning

confidence: 97%

“…If the results of the CaCO 3 toughening of aPK are compared to the rubber toughening [28] then up to 12.5 vol% great similarities between the two systems are observed. At higher contents the rubber is more effective.…”

Section: Impact Resistancementioning

confidence: 99%

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Rigid particle toughening of aliphatic polyketone

Zuiderduin

Huétink

Gaymans

2006

Polymer

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The properties of polyolefins modified with PET powder

Jakubowska¹,

Sterzyński²,

Królikowski³

2008

J of Applied Polymer Sci

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The polyolefin and poly(ethylene terephthalate) (PET) products are the mostly current communal waste materials. The waste polymeric materials are generally difficult to separate, and therefore a processing of nonseparated materials presents an interesting alternative suggestion. The aim of our work was to analyze the possibility of reprocessing of polyolefins by a relative low temperature, and to study the effect of addition of PET solid powder on processing and application properties. The results of our investigations allow to conclude that the solid PET powder may play a role of a heterogeneous nucleator, acting as an a-phase promoter of an isotactic polypropylene.

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Influence of molecular weight on the fracture properties of aliphatic polyketone terpolymers

Cited by 21 publications

References 22 publications

Pre-yield tensile set of a semi-crystalline polymer, its blend and composite

Pre-yield tensile set of a semi-crystalline polymer, its blend and composite

Rigid particle toughening of aliphatic polyketone

The properties of polyolefins modified with PET powder

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