Effect of the Blending of Low Stereo-regularity Component in High-Speed Melt Spinning of Polypropylene

Kohri, Yohei; Takarada, Wataru; Ito, Hiroshi; Takebe, Toshihiko; Minami, Yutaka; Kanai, Toshitaka; Kikutani, Takeshi

doi:10.4325/seikeikakou.20.831

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…Kohri et al . produced a bicomponent elastomeric fiber via melt spinning of low‐isotacticity PP (LPP) as the core component and blend of LPP and high‐isotacticity PP (IPP) as the shell component at Tokyo Institute of Technology.…”

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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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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“…Our previous research found that the blending of a small amount of low tacticity polypropylene (LMPP) [13] to commercial high tacticity polypropylene (PP) could produce very fine fiber without breaking under the high-speed spinning conditions. [16,17] The theoretical analysis during the spunbond process was formulated and applied for the blends of LMPP to PP in order to investigate the deformation behavior during the spunbond process. It was surmised that these results came from the retardation of crystallization speed of PP and the prevention of quick deformation during the spinning process by adding LMPP.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the nonwoven fabrics are sometimes required to be soft and composed of fine fibers. Our previous research found that the blending of a small amount of low tacticity polypropylene (LMPP) to commercial high tacticity polypropylene (PP) could produce very fine fiber without breaking under the high‐speed spinning conditions . This blend was also applicable for the PP spunbond process and highly improved spinnability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical analysis of the spunbond process and its applications for polypropylenes

Kanai¹,

Kohri

Takebe

2017

Adv Polym Technol

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The theoretical analysis of the spunbond process was set up and applied to polypropylene (PP) and its blends. The effect of blending low tacticity polypropylene (LMPP) to high tacticity PP on the spinnability of the spunbond process was investigated. A small amount of LMPP was found to stabilize the high-speed spinning of PP, and very fine fibers were obtained. From the calculated results, it was speculated that the improvement of spinnability originated from the suppression of crystallization speed and strain rate in the spinning process. The physical properties of the spunbond nonwoven fabrics were also investigated. K E Y W O R D Sfiber, low modulus PP, nonwoven fabrics, spunbond, tacticity, theoretical analysis

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