Properties and Phase Structure of the Poly(propylene)-Low-Density Poly(ethylene) Blends

Livanova, N. M.; Попова, Екатерина Сергеевна; Ledneva, O.A.; Попов, А. А.

doi:10.1080/00914030008035064

Cited by 8 publications

(8 citation statements)

References 3 publications

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“…For instance, it was found that the rate of ozone oxidation of oriented HDPE ± PP compositions decreases as the content of PP increases. 330 In studies of the blend of isotactic PP and SKEPT { it was shown that an increase in the content of PP leads to enrichment of the interfacial layer with rubber and that the structure of the interfacial layer is the determining factor in the thermal oxidation of blends and vulcanisates. 331 This manifests itself as changes in both the mechanism and kinetics of radical steps in the initial stage of oxidation which can affect inhibition of the oxidation process.…”

Section: Fields Of Application Of In Situ Prepared Polymer ± Polymer ...mentioning

confidence: 99%

Molecular polymer–polymer compositions. Synthetic aspects

Pomogailo¹

2002

Russ. Chem. Rev.

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The main ways of improving the compatibility of The main ways of improving the compatibility of polymer ± polymer compositions containing polyolefins as one polymer ± polymer compositions containing polyolefins as one component are considered. Considerable attention is given to the component are considered. Considerable attention is given to the preparation of polyolefins in the presence of an ingredient bound preparation of polyolefins in the presence of an ingredient bound to the catalyst in the catalytic (including consecutive) polymer-to the catalyst in the catalytic (including consecutive) polymerisation of olefins. The so-called reactor blends and the synthesis isation of olefins. The so-called reactor blends and the synthesis and structure of diblock and conducting composites are described. and structure of diblock and conducting composites are described. The important role of compatibilisation of polymers of different The important role of compatibilisation of polymers of different nature with the use of a third component is pointed out. The nature with the use of a third component is pointed out. The formation mechanism of molecular compositions, the structure formation mechanism of molecular compositions, the structure and properties of the intermediate layer and the main fields of and properties of the intermediate layer and the main fields of application of synthetic polyolefin ± polymer compositions are application of synthetic polyolefin ± polymer compositions are discussed. The bibliography includes 335 references discussed. The bibliography includes 335 references. .

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Section: Fields Of Application Of In Situ Prepared Polymer ± Polymer ...mentioning

confidence: 99%

Molecular polymer–polymer compositions. Synthetic aspects

Pomogailo¹

2002

Russ. Chem. Rev.

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“…14,15 PE/polypropylene (PP) blends have also been quantied and being thermodynamically immiscible, 16 the phase composition and crystallinity for the individual blend components has also been determined. The short spectral acquisition times and minimal sample preparation make it a predestined technique to analyze polymer blends, copolymers and polymer composites.…”

Section: Introductionmentioning

confidence: 99%

“…The interaction of PE with highly conductive llers such as carbon nanotubes has been studied by analyzing the band shis in the Raman spectra of the nanotubes upon intercalation of PE in the nanotube bundles. 14,15 PE/polypropylene (PP) blends have also been quantied and being thermodynamically immiscible, 16 the phase composition and crystallinity for the individual blend components has also been determined. 17 The Raman spectrum of PE is well understood and the fundamental modes of vibration have been assigned.…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopy as a non-destructive tool to quantify the comonomer content in ethylene/1-olefin copolymers

2015

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Ethylene/1-olefin copolymers, ranging from 1-butene to 1-octadecene, have been studied with Raman spectroscopy and the spectral changes upon comonomer incorporation have been analyzed. The Raman spectra of ethylene/1-olefin copolymers are characterized by a band ensemble in the lower frequency region below 1000 cm-1 which is a characteristic scattering from the comonomer segments. The spectra show bands due to scattering from the polyethylene sequences which also reflect the effect of the morphological changes occurring with the increasing comonomer content. By correlating the bands characteristic of the comonomer to those of the ethylene sequences, an internal intensity standard was identified. This also caters to the effect of the experimental parameters such as sample focus and spectral acquisition time for calibration of the comonomer content. This approach was also extended to amorphous ethylene/norbornene copolymers and a similar method for quantification was developed. The major advantages of this method are the minimum amount of sample preparation, and the low sample size, enabling even micrograms of the sample to be measured. Due to these, quantification with Raman spectroscopy is uniquely suited for online quality control and liquid chromatography which require a fast and robust analytical methodology

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“…Both PP and PE present major polymeric components of plastic waste streams, 2 and they have been studied for many years. Livanova et al 3 investigated the properties and phase structure of PP/LDPE blends in isotropic and oriented states by the methods of differential scanning calorimetry (DSC) and polarization infrared (IR) spectroscopy. The presence of LDPE increases the degree of PP orientation and the mechanical strength of the blends.…”

Section: Introductionmentioning

confidence: 99%

Influence of ethylene–propylene–diene terpolymer addition on processing parameters, phase structure and thermal behaviour of polypropylene/low-density polyethylene blends

Penava

Rek

Šlouf

et al. 2014

Journal of Elastomers & Plastics

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The influence of blend composition and ethylene-propylene-diene terpolymer (EPDM) content on the processing parameters, phase structure and thermal behaviour of polypropylene (PP) and low-density polyethylene (LDPE) blends was studied. Processing parameters of blends in twin-screw extruder were followed by output (Q), torque (TQ) and back pressure (p), and apparent viscosity as given by TQ/Q and p/Q ratios, while the thermal behaviour was measured using differential scanning calorimetry. Phase structure was investigated using scanning transmission electron microscopy (STEM). The degree of crystallinity (w c

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Properties and Phase Structure of the Poly(propylene)-Low-Density Poly(ethylene) Blends

Cited by 8 publications

References 3 publications

Molecular polymer–polymer compositions. Synthetic aspects

Molecular polymer–polymer compositions. Synthetic aspects

Raman spectroscopy as a non-destructive tool to quantify the comonomer content in ethylene/1-olefin copolymers

Influence of ethylene–propylene–diene terpolymer addition on processing parameters, phase structure and thermal behaviour of polypropylene/low-density polyethylene blends

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