On the theoretical strength of gelspun/hotdrawn ultra-high molecular weight polyethylene fibres

Penning, J. P.; Werff, H. van der; Roukema, Mees; Pennings, A. J.

doi:10.1007/bf01032452

Cited by 30 publications

(14 citation statements)

References 10 publications

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“…For gel‐spun PE, many studies have been devoted to the drawing process . Drawing in two stages appeared particularly effective, especially to obtain higher draw ratios, compared with other drawing methods such as single stage drawing at fixed temperature or through a temperature gradient, the former generally limited to lower total draw ratios while the latter required more complex drawing equipment with minimal benefit relative to two stage drawing . For these reasons, the PEO fibers of the present study were subjected to a two stage drawing process.…”

Section: Resultsmentioning

confidence: 97%

“…Selecting appropriate conditions for each drawing stage is critical, and for gel‐spun PE, significant changes in tensile properties have been reported depending on the drawing conditions such as temperature and deformation rate . For gel spun UHMWPE, favorable drawing temperatures appeared to be in the range of 80–148°C . At lower temperatures, there was insufficient molecular mobility to achieve high draw ratios, while at higher temperatures, the fiber can melt.…”

Section: Resultsmentioning

confidence: 99%

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Development of a gel spinning process for high‐strength poly(ethylene oxide) fibers

Wyatt

Chien

Kumar

et al. 2014

Polymer Engineering & Sci

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This article describes a new gel-spinning process for making high-strength poly(ethylene oxide) (PEO) fibers. The PEO gel-spinning process was enabled through an oligomer/polymer blend in place of conventional organic solvents, and the gelation and solvent-like properties were investigated. A 92/8 wt% poly(ethylene glycol)/PEO gel exhibited a melting temperature around 45 C and was highly stretchable at room temperature. Some salient features of a gel-spun PEO fiber with a draw ratio of 60 are tensile strength at break 5 0.66 6 0.04 GPa, Young's modulus 5 4.3 6 0.1 GPa, and a toughness corresponding to 117 MJ/m 3 . These numbers are significantly higher than those previously reported. Wide-angle x-ray diffraction of the high-strength fibers showed good molecular orientation along the fiber direction. The results also demonstrate the potential of further improvement of mechanical properties. POLYM. ENG. SCI., 54:2839-2847, 2014. V C 2014 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Development of a gel spinning process for high‐strength poly(ethylene oxide) fibers

Wyatt

Chien

Kumar

et al. 2014

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…A simple model of particular relevance to high molecular weight polyethylene was proposed by Penning et al 87 The fiber is thought to be composed of microfibrils consisting of an almost infinite sequence of crystalline blocks separated by disordered domains. The adjacent crystalline blocks are connected by taut tie molecules.…”

Section: Theoretical Aspectsmentioning

confidence: 99%

The tensile and compressive deformation of polymer and carbon fibers

Northolt¹,

Baltussen

2001

J of Applied Polymer Sci

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An outline of the continuous chain model for the description of the tensile and compressive deformation of polymer fibers below the glass transition temperature is presented. The basic mechanism is the contraction of the chain orientation distribution as a result of elastic, plastic, and viscoelastic shear deformation. The deformation of the fiber is calculated for finite strains and arbitrary values of the orientation parameter. The model explains the yield and the compressive strength of polymer fibers. The tensile curve, including yielding, is described in terms of the modulus for shear between the chains, the chain modulus, the chain orientation distribution, and a yield parameter. The response to complex time-dependent loading schemes can be calculated by introduction of the Eyring reduced time model. The elastic tensile deformation of carbon fibers is described in terms of the classical series aggregate model. It is shown that the modulus for shear between the graphitic planes and the orientation distribution of these planes govern the tensile and compressive properties of carbon fibers. The high values of the shear modulus are attributed to some covalent bonding between the graphitic planes. A survey of the various models for the strength of polymer fibers is presented and a new model is discussed, which explains the failure envelope of polymer fibers.

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“…The fibrils are connected by taut tie-molecules and failure was assumed to take place when enough tie-molecules or chains in the vicinity of segregated chain ends had fractured [Pen90,Ter85]. Several non-quantitative modifications of their models have been proposed, later including slightly more refined microstructure descriptions, but leaving the core of the concepts intact.…”

Section: Relationship Between Microstructure and Resulting Propertiesmentioning

confidence: 99%

Structure and properties of aramid fibres

Zwaag

2009

Handbook of Textile Fibre Structure

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On the theoretical strength of gelspun/hotdrawn ultra-high molecular weight polyethylene fibres

Cited by 30 publications

References 10 publications

Development of a gel spinning process for high‐strength poly(ethylene oxide) fibers

Development of a gel spinning process for high‐strength poly(ethylene oxide) fibers

The tensile and compressive deformation of polymer and carbon fibers

Structure and properties of aramid fibres

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