Characterization of a PVA Treated Sea-island Type Nylon Microfiber Nonwoven Leatherette
Vol. 58, No. 3, pp. 147-153,
Jun. 2021
10.12772/TSE.2021.58.147
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Abstract
In this study, a leatherette was manufactured using sea-island type nonwoven
nylon microfiber. To increase the flexibility of the leatherette, the nonwoven fabric was preimpregnated
in a polyvinyl alcohol (PVA) solution. The PVA-impregnated nonwoven seaisland
type nylon microfiber was treated with a polyurethane (PU) solution and then the
elution process was performed to remove PVA and co-PET using a NaOH solution. The
morphologies of the nonwoven fabrics before and after elution of PVA and co-PET were
observed by scanning electron microscopy (SEM). The pliability of the nonwoven fabric
was evaluated using flexibility and stiffness tests before and after each treatment. The
leatherette with the PVA-treated nonwoven fabric showed more pores and gaps in its morphologies
and higher flexibility in the stiffness test. Finally, mechanical properties were
analyzed based on tensile properties and dynamic modulus.
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