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Preparation and Characteristics of m-aramid/Poly(vinyl alcohol) Composite Fibers  

Jun, Eon (Department of Textile Engineering, Chonbuk National University)
Jeong, Min-Ho (Department of Textile Engineering, Chonbuk National University)
Chung, Yong-Sik (Department of Textile Engineering, Chonbuk National University)
Kim, Hwan-Chul (Department of Textile Engineering, Chonbuk National University)
Publication Information
Textile Science and Engineering / v.48, no.1, 2011 , pp. 60-64 More about this Journal
Abstract
Poly(vinyl alcohol)(PVA) was dissolved in DMSO(dimethyl sulfoxide) and m-aramid was dissolved in DMAc(dimethyl acetamide). The composite fibers were prepared by wet-spinning a mixture of the m-aramid and PYA solutions with methyl alcohol as a coagulant. The ratio of m-aramid to PYA was 10/90, 20/80, 30/70, 40/60, 50/50 wt%. The composite fibers had sea-island bicomponent structures; the island component was m-aramid and the sea component was PYA. The nano-sized m-aramid fibers were obtained by washing out PYA with boiling water. Phase separation in theses immiscible polymer solution blends led to m-aramid being extracted in a nano-sized fiber state. The diameter of the fibrillated m-aramid fibers decreased as the PYA contents increased (130~313 nm). This study provided a new method to make nano-sized m-aramid fibers with wet-spinning.
Keywords
m-aramid; PVA; sea-island structure; nano fibers;
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