Characterization of the morphology of co-extruded, thermoplastic/rubber multi-layer tapes

l’Abee, Roy; Vissers, A.M.J.T.; Goossens, Jgp Han; Spoelstra, Anne B.; Duin, Martin van

doi:10.1016/j.aca.2009.06.036

Cited by 10 publications

(4 citation statements)

References 23 publications

(34 reference statements)

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“…Multi-layer co-extrusion is a technique to fabricate multi-layer polymer tapes from tens to hundreds of micrometers in thickness composed of individual layers with thicknesses varying from E100 nm to several mm. Detailed information on the fabrication of such multi-layer polymer blends can be found in l′Abee et al [1] and other references [35,36]. Multi-layer polymer tapes are utilized for food packaging and high-toughness materials on account of their excellent barrier properties such as low oxygen permeability.…”

Section: Multi-layer Co-extruded I-pp/hdpe Polymer Tapesmentioning

confidence: 99%

“…To tailor the (macroscopic) functional properties of polymer composites, a proper understanding on how the nanoscopic morphology translates into function over multiple length scales is required. Especially in multiphase polymer blends and polymer/particle composites, a hierarchical morphology is often introduced by processing [1,2], which extends from the nanometer scale (e.g., size and arrangement of crystalline lamella, nanoparticles) via the micrometer scale (phase separation into domains, homogeneity) to the macroscale (mechanical strength, functional and surface properties). Hence, a bottom-up multiscale characterization and analysis of the resulting hierarchical structures is essential for improving processing conditions and for designing novel materials and devices.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative nanoscopy: Tackling sampling limitations in (S)TEM imaging of polymers and composites

2016

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Section: Multi-layer Co-extruded I-pp/hdpe Polymer Tapesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantitative nanoscopy: Tackling sampling limitations in (S)TEM imaging of polymers and composites

2016

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“…8,17 Goossens et al found that the tensile properties of polypropylene/ethylene-propylene-diene rubber thermoplastic vulcanizates (PP/EPDM-TPVs) are closely related to the size of dispersed rubber particles. 18 These authors explained that the reduction in rubber particles size could produce more stress concentration points that inhibit the increase of microcracks during the stretching process and lead to an improvement in mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Dependence of microstructure and properties of polypropylene/bromo‐isobutylene‐isoprene rubber thermoplastic vulcanizates on the molding process

Pan

Wang

Chen

et al. 2020

J of Applied Polymer Sci

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To explore the dependence of the microstructure and properties of thermoplastic vulcanizates (TPVs) on the molding process. The polypropylene/bromo‐isobutylene‐isoprene rubber thermoplastic vulcanizates (PP/BIIR‐TPVs) are molded by high rate shear injection and compression molding, and the phase morphology and physical‐mechanical properties of PP/BIIR‐TPVs specimens are investigated. Detailed small‐angle X‐ray scattering, scanning electron microscopy and atomic force microscopy investigations demonstrate that the high rate shear of injection molding not only decreases the size of BIIR particles but also induces the orientation of the PP matrix and further increases its crystallinity. Subsequently, the PP/BIIR‐TPVs molded by injection molding have higher tensile strength and Young's modulus, while the compression molding benefits to higher elongation at break. The mechanism regarding the effects of high rate shear during injection molding on phase morphology development of PP/BIIR‐TPVs is discussed. This study guides the preparation of TPVs products with desired properties.

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“…In this work, the Baker's transformation was performed manually using a repetitive pressing and folding process, which complicates its introduction in an industrial environment. Static mixers or multipliers on the other hand have been used for industrial‐scale multilayer coextrusion of different polymers using the Baker's transformation principle . Forced assembly through multilayer coextrusion is a continuous melt‐processing method that was originally developed in the 1960s and is very easily scalable.…”

Section: Introductionmentioning

confidence: 99%

Multilayer coextrusion of graphene polymer nanocomposites with enhanced structural organization and properties

Gao

Picot

et al. 2017

J of Applied Polymer Sci

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A potential advantage of platelet-like nanofillers as nanocomposite reinforcements is the possibility of achieving twodimensional (2D) stiffening through planar orientation of the platelets. Forced assembly by multilayer coextrusion, which enables the in-plane orientation of platelet-like fillers in alternating layers, was used in this work to produce poly(lactic acid) (PLA)/graphene multilayer films. These films exhibited a multilayer structure made of alternating layers of neat PLA and PLA containing graphite nanoplatelets (GNPs). Electron microscopy revealed information on the orientation of the individual GNPs. X-ray diffraction results indicated that the thickness of the individual GNPs was reduced during the multilayer coextrusion process. A significant reinforcement of 120% at an overall GNP loading of 1 wt % in PLA was achieved. This high effective reinforcement was attributed to the high degree of planar alignment, improved dispersion and exfoliation and increased aspect ratio of the GNPs in the composite layers after multilayer coextrusion. Improved water vapor barrier properties were also achieved as a result of the highly organized 2D nanofillers in the multilayer films. These industrial scalable multilayer nanocomposite films open up possibilities for lightweight and strong packaging materials for food and industrial applications.

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Characterization of the morphology of co-extruded, thermoplastic/rubber multi-layer tapes

Cited by 10 publications

References 23 publications

Quantitative nanoscopy: Tackling sampling limitations in (S)TEM imaging of polymers and composites

Quantitative nanoscopy: Tackling sampling limitations in (S)TEM imaging of polymers and composites

Dependence of microstructure and properties of polypropylene/bromo‐isobutylene‐isoprene rubber thermoplastic vulcanizates on the molding process

Multilayer coextrusion of graphene polymer nanocomposites with enhanced structural organization and properties

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