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Dry-jet wet spinning of polyhydroxyamide fibers

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Abstract

A high molecular weight polyhydroxyamide (PHA) solution in N, N-dimethyl acetamide (DMAc) was prepared from 3,3′-dihydroxybenzidine and isophthalic chloride (IPC), which was used for spinning PHA fiber. Before spinning, the diffusion property of DMAc into various coagulants was examined. The fiber was well formed in coagulants such as water/ethanol with a composition of 5/5, ethanol, and ethanol/isopropanol with a composition of 7/3 and 5/5. However, the PHA fiber spun in the water/ethanol mixture contained voids. After the fiber spun in ethanol was annealed at over 350°C, the ultimate stress and initial modulus of the fiber increased from 75.5 MPa and 3.22 GPa to 369 MPa and 29.5 GPa, respectively. These properties of the PHA fiber spun by the dry spinning method were also enhanced, attaining 154 MPa and 5.56 Gpa, respectively.

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Author notes

  1. Seung Koo Park

    Present address: Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute, 161 Kajong-Dong, 305-350, Yusong-Gu, Taejon, South Korea

Authors and Affiliations

  1. Polymer Science & Engineering Department, University of Massachusetts Amherst, 01003, Amherst, MA, USA

    Seung Koo Park, Seo Hyun Cho & Richard John Farris

Authors
  1. Seung Koo Park
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  2. Seo Hyun Cho
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  3. Richard John Farris
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Correspondence to Seung Koo Park.

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Park, S.K., Cho, S.H. & Farris, R.J. Dry-jet wet spinning of polyhydroxyamide fibers. Fibers Polym 1, 92–96 (2000). https://doi.org/10.1007/BF02875191

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  • DOI: https://doi.org/10.1007/BF02875191

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