Electrospun Poly(vinyl alcohol) Mats Prepared by Adding Malic Acid and Lactic Acid

말산과 젖산을 부가하여 전기방사한 Poly(vinyl alcohol) 부직포

  • Jung, Yoon-Ho (Department of Textile Engineering, Chonbuk National University) ;
  • Cho, Min-Seok (Department of Textile Engineering, Chonbuk National University) ;
  • Lee, Un-Soo (Department of Bionano System Engineering, Chonbuk National University) ;
  • Khil, Myung-Seob (Department of Textile Engineering, Chonbuk National University) ;
  • Pak, Pyong-Ki (Department of Textile Engineering, Chonbuk National University) ;
  • Kim, Hak-Yong (Department of Textile Engineering, Chonbuk National University)
  • 정윤호 (전북대학교 섬유공학과) ;
  • 조민석 (전북대학교 섬유공학과) ;
  • 이운수 (전북대학교 바이오나노시스템공학과) ;
  • 길명섭 (전북대학교 섬유공학과) ;
  • 박병기 (전북대학교 섬유공학과) ;
  • 김학용 (전북대학교 섬유공학과)
  • Published : 2007.04.30

Abstract

Poly(vinyl alcohol) (PVA) solutions were prepared by dissolving PVA in malic acid (MA)/distilled water, lactic acid (LA)/distilled water, and distilled water (DW) as a comparison solvent Viscosity and electric conductivity of PVA solution were determined by using a digital viscometer and electric conductivity' meter at room temperature, respectively. The morphological characteristics of the electrospun PVA nonwoven mats were investigated with a scanning electron microscopy (SEM) after gold sputtering. Also, mechanical properties of electrospun PVA nonwoven mats were measured by a universal testing machine (UTM). SEM results indicated that the electrospun fibers prepared from 4 wt% MA/DW as a solvent showed highly entangled structure due to their bent shape, which resulted in high mechanical strength of electrospun PVA nonwoven mats. Tensile strength and breaking elongation of electrospun PVA fibers prepared from 4 wt% MA/DW were over 12 MPa and 420%, respectively.

Keywords

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