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Effect of MDI on the Mechanical Properties of Fibers in Poly(lactic acid)/Poly(butylene succinate) Blends During Melt Spinning.

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Title: Effect of MDI on the Mechanical Properties of Fibers in Poly(lactic acid)/Poly(butylene succinate) Blends During Melt Spinning.
Authors: Jeong, Ye-dam1,2 (AUTHOR), Cho, Hyun Je2 (AUTHOR), Seo, Min Jae1,2 (AUTHOR), Kim, Jongwon2 (AUTHOR) kjwfiber@ynu.ac.kr
Source: Polymers (20734360). Jan2026, Vol. 18 Issue 1, p73. 15p.
Subjects: Methylene diphenyl diisocyanate, Miscibility, Tensile strength, Polymers, Mechanical behavior of materials, Biodegradable plastics, Melt spinning, Deformations (Mechanics)
Abstract: In this study, the properties of poly(lactic acid) (PLA)/poly(butylene succinate) (PBS) blends were analyzed according to the PBS content during the manufacture of the blend. However, the inherent immiscibility between PLA and PBS often leads to phase separation and limited mechanical performance, particularly in melt-spun fiber applications, which restrict their practical use. To increase the miscibility of the PLA/PBS blend, methylene diphenyl diisocyanate (MDI) was added up to 0.8 wt.%, and the characteristics were analyzed via thermogravimetric analysis, differential scanning calorimetry, viscosity measurements, dynamic mechanical analysis, and Fourier-transform infrared spectroscopy. As the PBS content in the blend increased, the thermal stability, viscosity, elastic properties, and glass transition temperature decreased. In contrast, as the MDI content in the PLA/PBS blend increased, the thermal stability, viscosity, elastic properties, and glass transition temperature increased. The results revealed that the miscibility of the PLA/PBS blend increased as the MDI content in the blend increased. Additionally, the tensile strength and elongation of the PLA/PBS blend fibers manufactured through melt spinning were analyzed. While the tensile strength decreased as the PBS content increased, the tensile strength and elongation considerably improved as the MDI content in the blend increased. Specifically, the tensile strength of the PLA/PBS blend fibers increased from 2.55 to 2.99 gf/de, corresponding to an improvement of approximately 17%, while the elongation at break increased from 22.48% to 41.64%, representing an enhancement of approximately 85% with increasing MDI content. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Effect of MDI on the Mechanical Properties of Fibers in Poly(lactic acid)/Poly(butylene succinate) Blends During Melt Spinning.
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  Data: <searchLink fieldCode="AR" term="%22Jeong%2C+Ye-dam%22">Jeong, Ye-dam</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cho%2C+Hyun+Je%22">Cho, Hyun Je</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Seo%2C+Min+Jae%22">Seo, Min Jae</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Jongwon%22">Kim, Jongwon</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> kjwfiber@ynu.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Jan2026, Vol. 18 Issue 1, p73. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Methylene+diphenyl+diisocyanate%22">Methylene diphenyl diisocyanate</searchLink><br /><searchLink fieldCode="DE" term="%22Miscibility%22">Miscibility</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Biodegradable+plastics%22">Biodegradable plastics</searchLink><br /><searchLink fieldCode="DE" term="%22Melt+spinning%22">Melt spinning</searchLink><br /><searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, the properties of poly(lactic acid) (PLA)/poly(butylene succinate) (PBS) blends were analyzed according to the PBS content during the manufacture of the blend. However, the inherent immiscibility between PLA and PBS often leads to phase separation and limited mechanical performance, particularly in melt-spun fiber applications, which restrict their practical use. To increase the miscibility of the PLA/PBS blend, methylene diphenyl diisocyanate (MDI) was added up to 0.8 wt.%, and the characteristics were analyzed via thermogravimetric analysis, differential scanning calorimetry, viscosity measurements, dynamic mechanical analysis, and Fourier-transform infrared spectroscopy. As the PBS content in the blend increased, the thermal stability, viscosity, elastic properties, and glass transition temperature decreased. In contrast, as the MDI content in the PLA/PBS blend increased, the thermal stability, viscosity, elastic properties, and glass transition temperature increased. The results revealed that the miscibility of the PLA/PBS blend increased as the MDI content in the blend increased. Additionally, the tensile strength and elongation of the PLA/PBS blend fibers manufactured through melt spinning were analyzed. While the tensile strength decreased as the PBS content increased, the tensile strength and elongation considerably improved as the MDI content in the blend increased. Specifically, the tensile strength of the PLA/PBS blend fibers increased from 2.55 to 2.99 gf/de, corresponding to an improvement of approximately 17%, while the elongation at break increased from 22.48% to 41.64%, representing an enhancement of approximately 85% with increasing MDI content. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.3390/polym18010073
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 73
    Subjects:
      – SubjectFull: Methylene diphenyl diisocyanate
        Type: general
      – SubjectFull: Miscibility
        Type: general
      – SubjectFull: Tensile strength
        Type: general
      – SubjectFull: Polymers
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Biodegradable plastics
        Type: general
      – SubjectFull: Melt spinning
        Type: general
      – SubjectFull: Deformations (Mechanics)
        Type: general
    Titles:
      – TitleFull: Effect of MDI on the Mechanical Properties of Fibers in Poly(lactic acid)/Poly(butylene succinate) Blends During Melt Spinning.
        Type: main
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          Name:
            NameFull: Jeong, Ye-dam
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            NameFull: Cho, Hyun Je
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            NameFull: Seo, Min Jae
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            NameFull: Kim, Jongwon
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            – D: 01
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
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