High‐Speed Melt Spinning of Syndiotactic‐Polystyrene; Improvement of Spinnability and Fiber Structure Development Via Bicomponent Spinning with Atactic‐Polystyrene

Hada, Yoshiaki; Shikuma, Haruo; Ito, Hiroshi; Kikutani, Takeshi

doi:10.1081/mb-200064814

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…At elevated temperature, the sheath melts creating bonding prints 6, 7. Although a vast amount of literature is available on various aspects of PET single component spinning,8–12 there are only few reports on bicomponent spinning of PET with polypropylene (PP),13 polyethylene (PE),14 polystyrene (PS),15 poly(butylene terephthalate) (PBT),16 poly(butylene succinate/ l ‐lactate) (PBSL) or poly( l ‐lactic acid) (PLLA) 3…”

Section: Introductionmentioning

confidence: 99%

New functional bicomponent fibers with core/sheath‐configuration using poly(phenylene sulfide) and poly(ethylene terephthalate)

Houis

Schmid

Lübben

2007

J of Applied Polymer Sci

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Bicomponent fibers using the high-performance polymer poly(phenylene sulfide) (PPS) together with poly(ethylene terephthalate) (PET) were melt-spun. Both possibilities of using PPS, either as core or as sheath material, were realized to provide special functionalities like improved thermobonding capability, flame retardancy, or chemical resistance. Parameters that guarantee stable processing of PPS and PET during coaxial extrusion with different core/sheath volume ratios were explored. Microscopic studies of the cross-sections showed holes and cavities, which were formed at the interface between PPS and PET. Possible mechanisms for cavity formation were evaluated. Results of thermal and mechanical characterization by means of TGA, DSC, and tensile testing revealed a strong influence of the processing parameters, namely draw ratio and core/sheath volume ratio, on the crystallization and the tensile strength of the drawn fibers. By changing the core/sheath volume ratio from 2 to 0.5 in the PPS/PET fiber, the crystallinity of the PET-component was switched from 10 to 50%, whereas the crystallinity of the PPS dropped from 68 to 7%. It was determined that bicomponent fibers can exceed the strength of monocomponent fibers up to 28%. The flammability and chemical resistance of the new developed fibers were characterized. In contrary to what was expected, the encasing of PET with PPS reduced the flame retardancy, though PPS has a higher flame resistance than PET. The chemical resistance of the PET core against hydrolysis was imparted by coextruding a PPS sheath.

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Section: Introductionmentioning

confidence: 99%

New functional bicomponent fibers with core/sheath‐configuration using poly(phenylene sulfide) and poly(ethylene terephthalate)

Houis

Schmid

Lübben

2007

J of Applied Polymer Sci

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“…In other words, enhancement of molecular orientation and crystallization of the shell component were found to occur by localizing the IPP at the region near the fiber surface. Hada et al . produced C/S bicomponent fibers consisting of atactic‐PS (a‐PS) and syndiotactic‐PS (s‐PS) through high‐speed melt spinning.…”

Section: C/s Fibersmentioning

confidence: 99%

Recent advances in core/shell bicomponent fibers and nanofibers: A review

Naeimirad

Ali

Kotek

et al. 2018

J of Applied Polymer Sci

146

103

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There has been a steady progress in developing synthetic fibers in the past few years. Bicomponent fibers and nanofibers in a core/shell (C/S) configuration, including two dissimilar materials have presented unusual potential for use in many novel applications. These fibers can be produced using a variety of materials via different techniques i.e., coaxial melt spinning and electrospinning. In this review, we discuss the recent advances in C/S fibers and nanofibers' production. The first part has been assigned to the bicomponent fibers manufacturing technology, while production and applications of C/S nanofibers have been described in the second part.

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“…Combinations include segmented pies with hollow or solid cores, islands in the sea and core/sheath. Core/sheath bicomponents are commonly associated with the production of thermally bonded materials [4][5][6]. If the sheath has a relatively low melting point, thermal bonding can be economically accomplished at low temperature with a relatively soft fabric handle [7].…”

mentioning

confidence: 99%

Differences in the Tensile Properties and Failure Mechanism of PP/PE Core/Sheath Bicomponent and PP Spunbond Fabrics in Uniaxial Conditions

Wang

Jin

Mao

et al. 2010

Textile Research Journal

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The tensile failure mechanism in thermally point-bonded bicomponent spunbonds is elucidated based on core/sheath PP/PE filaments. These fabrics exhibit high extension and low tensile strength. In contrast to 100% PP spunbonds, where there is limited bond deformation prior to failure of the fabric, the bond points in PP/PE bicomponent spunbonds undergo large deformations during uniaxial extension before fabric breakage occurs. Failure occurs mainly within the bond points rather than around their perimeter.

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High‐Speed Melt Spinning of Syndiotactic‐Polystyrene; Improvement of Spinnability and Fiber Structure Development Via Bicomponent Spinning with Atactic‐Polystyrene

Cited by 9 publications

References 16 publications

New functional bicomponent fibers with core/sheath‐configuration using poly(phenylene sulfide) and poly(ethylene terephthalate)

New functional bicomponent fibers with core/sheath‐configuration using poly(phenylene sulfide) and poly(ethylene terephthalate)

Recent advances in core/shell bicomponent fibers and nanofibers: A review

Differences in the Tensile Properties and Failure Mechanism of PP/PE Core/Sheath Bicomponent and PP Spunbond Fabrics in Uniaxial Conditions

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