Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지
DOI QR코드

DOI QR Code

Preparation and Morphological Characteristics of m-Aramid Fibrid Using a Non-solvent of Ethanol

에탄올 비용매를 이용한 메타아라미드 피브리드 제조 및 형태학적 특성

  • Baek, Byungwoon (Department of Organic Materials & Fiber Engineering, Chonbuk National University) ;
  • Kim, Wan Jin (Department of Organic Materials & Fiber Engineering, Chonbuk National University) ;
  • Chung, Yong Sik (Department of Organic Materials & Fiber Engineering, Chonbuk National University)
  • 백병운 (전북대학교 공과대학 유기소재파이버공학과) ;
  • 김완진 (전북대학교 공과대학 유기소재파이버공학과) ;
  • 정용식 (전북대학교 공과대학 유기소재파이버공학과)
  • Received : 2014.03.10
  • Accepted : 2014.06.02
  • Published : 2014.06.30
⟨ Previous Next ⟩

Abstract

Fibrids are materials of a complex fibrous, film-like, or intermediate form. The diameter of the particles varies between $20-50{\mu}m$, and $100-10,000{\mu}m$. The optimal form and size of the particles depends in each case on the area of application. The fibrid form is the result of two processes, viz. a wave process and diffusion. The life span and break-up pattern of the polymer depend on the interphase surface tension, the viscosity of the polymer, and the diffusion speed ratio of the polymer and medium. In this study, m-aramid was polymerized at low temperature and in solution with an equal molar ratio of MPD and IPC in DMAc. The meta-aramid solution was prepared by dissolution in DMAc, and ethanol was used as a coagulation bath. The rotation speed was the main factor affecting the formation and morphology of the fibrid. Meta-aramid paper was produced from m-aramid fiber with meta-aramid fibrid by wet laying. The results showed that fibrid particle sizes decreased with increasing rotation speeds and decreasing concentrations of m-aramid in the solution. The properties of the m-aramid fibrid as a function of the processing conditions were investigated using an image analyzer, optical microscopy, and SEM. The resulting meta-aramid paper was analyzed in terms of its morphology, thickness, air permeability, and mechanical properties.

Keywords

References

  1. S. Zhang, M. Zhang, and K. Li, “Adhesion Force between Aramid Fibre and Aramid Fibrid by AFM”, Polym Bull, 2011, 66, 351−362. https://doi.org/10.1007/s00289-010-0335-5
  2. O. I. Nachinkin and E. B. D'yakonova, “Physiomechanical Properties and Processing of Man-made Fibres”, Fibre Chemistry, 1978, 10, 45−52. https://doi.org/10.1007/BF00545941
  3. H. H. Yang, "Aromatic High-Strength Fibers", Wiley, New York, 1989.
  4. W. A. Miller and C. N. Merriam, Jr., "Synthetic Fibrous Products", USP, 3,097,991(1963).
  5. S. I. Kuperman, E. B. D'yakonova, T. G. Shubina, and O. I. Nachinkin, “Fibrillated-Film Polymeric Binders from Aliphatic Polyamides”, Fibre Chemistry, 1978, 4, 35−36.
  6. V. A. Nikiforov, E. A. Pankratov, and S. A. Zhizhilev, "Fibridator Reactor", Chem Petroleum Eng, 1993, 10, 455−459
  7. A. Frances, L. J. Hesler, E. James, V. Trump, and R. M. Vasta, "Method of Making Fibrids", USP, 5,209,877(1993).
  8. H. Heywood, “Numerical Definitions of Particle Size and Shape”, Chem Ind, 1937, 56, 149−154.
  9. M. Khayet, C. Y. Feng, K. C. Khulbe, and T. Matsuura, “Preparation and Caracterization of Polyvinylidene Fluoride Hollow Fiber Membranes for Ultrafiltration”, Polymer, 2002, 43, 3879−3890. https://doi.org/10.1016/S0032-3861(02)00237-9
  10. S. P. Deshmukh and K. Li, “Effect of Ethanol Composition in Water Coagulation Bath on Morphology of PVDF Hollow Fibre Membranes”, J Membr, 1998, 150, 75−85. https://doi.org/10.1016/S0376-7388(98)00196-3
  11. A. Bottino, G. Camera-Roda, G. Capannelli, and S. Munari, “The Formation of Microporous Polyvinylidene Difluoride Membranes by Phase Separation”, J Membr, 1991, 67, 1−20.
  12. B. H. Kaye, "Direct Characterization of Fine Particles", John Wiley & Sons Inc., 1981.

Cited by

  1. Preparation and Morphological Characteristics of m-Aramid Fibrid Using a Fibridator of High Rotation Speed vol.52, pp.1, 2015, https://doi.org/10.12772/TSE.2015.52.026