The effect of the processing parameters on the fabrication of auxetic polyethylene

Neale, P. J.; Pickles, A. P.; Alderson, K. L.; Evans, K.

doi:10.1007/bf00360712

Cited by 32 publications

(10 citation statements)

References 13 publications

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“…After the successful fabrication of auxetic foams, research further extended to the investigation of the auxetic effect in more dense materials such as polyethylenes (12,13,34,36,81,(111)(112)(113)(114)(115)(116)(117)(118)(119)(120)(121)(122)(123)(124)(125)(126)(127)(128) based on the internal microstructure of nodules and fibrils. A bead-spring model of polymer networks and flexural grid models of micropolar continua, an array of regular or irregularly shaped particles, a set of springs to store elastic energy, and a set of topological constraints had been discussed in the literature (12,127,128).…”

Section: Auxetic Polyethylenementioning

confidence: 99%

Three decades of auxetic polymers: a review

Bhullar

2015

E-Polymers

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Developments in design and technology in the engineering and medical fields necessitate the use of smart and high-performance materials to meet higher engineering specifications. The general requirements of such materials include a combination of high stiffness and strength with significant weight savings, resistance to corrosion, chemical resistance, low maintenance, and reduced costs. Over the last three decades, it has been demonstrated that auxetic materials offer a huge potential for the fields of engineering, natural sciences, and biomedical engineering, and for many other industries, including the aerospace and defense industries, through their unique deformation mechanism and measured enhancements in mechanical properties. To meet future engineering challenges, auxetic materials are increasingly being recognized as integral components of smart and advanced materials. Although materials with a negative Poisson's ratio have been known since the early 1900s, they did not capture researchers' attention until the late 1980s. Since 1991, these materials have been known as auxetic materials. Since then, their benefits and applications have been expanded to all major classes of materials such as metals, ceramics, polymers, and composites, and they are also now being used in engineering applications. The goal of this review was to present the development of auxetic polymers, which were first fabricated in the form of polyurethane foam approximately three decades ago and are now used in the fabrication of non-woven nano/ micropolymeric structures. This review could provide useful information for the future development of auxetic polymers.

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Section: Auxetic Polyethylenementioning

confidence: 99%

Three decades of auxetic polymers: a review

Bhullar

2015

E-Polymers

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“…Since then, some synthetic materials having auxetic behaviour were reported such as Ôre-entrantÕ foam [5,6], microporous polymers [7][8][9] and laminated polymeric composite materials [10]. In the last decade, investigations on auxetic behaviour were mainly focused on the formation mechanism [11][12][13][14][15][16][17][18][19], mechanical performance [20][21][22][23][24][25][26][27][28][29][30], and fabrication technique [31][32][33][34][35][36][37] of macroscopic network structured materials. It was realized that the specific microstructure formation is critical for a material showing auxetic behaviour [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of liquid crystalline copolyesters containing horizontal and lateral rods in main chain (II)

Liu

Zhang

Shi

et al. 2005

Reactive and Functional Polymers

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“…The microstructure consisted of an array of nodules interconnected by fibrils [8,9]. Evans and Alderson [10][11][12][13] further developed cylinders of ultra high molecular weight polyethylene (UHMWPE) with a similar nodule-fibril microstructure and it was found to be auxetic with a strain dependent negative Poisson's ratio as low as -6. The processing route involved the compaction, sintering and extrusion of polymer powder.…”

Section: Introduction Auxetic Materials Exhibit a Negativementioning

confidence: 98%

The effect of processing parameters on the fabrication of auxetic extruded polypropylene films

Chirima

Ravirala

Rawal

et al. 2008

Physica Status Solidi (b)

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A processing parameter study for extruded polypropylene films has been carried out. Films were extruded at temperatures varying from 157 °C to 230 °C, screw speed from 0.525 rad s–1 to 2.10 rad s–1 and take up speed from 0.0225 m s–1 to 0.15 m s–1. Characterisation of the films was undertaken to determine Poisson's ratio, ν, using video exten‐ sometry and it was found that it was possible to vary the Poisson's ratio from positive (ν = +0.4) to negative (as low as ν = –1) by varying the processing parameters, allowing the possibility of tailoring the Poisson's ratio to specified applications driven values. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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The effect of the processing parameters on the fabrication of auxetic polyethylene

Cited by 32 publications

References 13 publications

Three decades of auxetic polymers: a review

Three decades of auxetic polymers: a review

Synthesis and characterization of liquid crystalline copolyesters containing horizontal and lateral rods in main chain (II)

The effect of processing parameters on the fabrication of auxetic extruded polypropylene films

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