Article
  • Analysis of Morphology and Viscoelastic Behavior of LCP/PET Blends by Repeated Extrusion
  • Choi YS, Jeon HY
  • 반복압출에 의한 LCP/PET 블렌드 조성에 따른 모폴로지 및 점탄성 거동 분석
  • 최용석, 전한용
Abstract
Droplet distribution of LCP(Vectra 950) and PET blend by repeated extrusion was examined through morphology analysis. Repeated extrusion was respectively proceeded twice and three times with blending condition and droplet distribution of only once extrusion sample showed uniform shape. However, droplet size of twice and three times extrusion samples increased and it was confirmed that droplets were concentrated on the center of specimens. It is thought that this phenomena were due to the compatibility and viscoelastic behavior of LCP/PET blend. Finally, it is thought that fiber manufacturing of different diameter is possible from spinning of repeated extrusion LCP/PET blended chip under same spinning condition.

모폴로지 분석을 통하여 반복압출에 의한 LCP(Vectra A950)와 PET 블렌드의 droplet 분산 상태를 확인하였다. 반복압출은 블렌드 조건별로 각각 2회, 3회 진행하였으며, 1회 압출 시료의 droplet 분산은 균일한 형태를 보였다. 하지만, 2회 및 3회 반복 압출 시료의 droplet 크기는 증가하였고 droplet이 시료의 중앙에 집중되는 현상을 확인할 수 있었다. 이러한 현상은 LCP/PET 블렌드의 상용성과 점탄성 거동에 기인한 것으로 생각된다. 끝으로 동일방사조건에서 반복압출 LCP/PET 블렌드 chip을 방사하면 직경이 다른 섬유 제조가 가능할 것으로 각된다.

Keywords: droplet; LCP(Vectra 950) and PET blending; repeated extrusion; miscibility; distribution

References
  • 1. Sperling LH, Introduction to physical polymer science, 4th Edition, Wiley-Interscience, Hoboken, 2006. (2006)
  •  
  • 2. Kim DB, Park JH, Korean Ist. Elect. Eng., 52, 33 (2003)
  •  
  • 3. Lee HJ, Lee HY, Park EJ, Choi YJ, Kim SD, Textile Coloration and Finishing, 22, 325 (2010)
  •  
  • 4. Song CH, Isayev AI, Polymer, 42(6), 2611 (2001)
  •  
  • 5. Kim WN, Denn MM, J. Rheol., 36, 1477 (1992)
  •  
  • 6. Perkins WG, J. Appl. Polym. Sci., 43, 329 (1991)
  •  
  • 7. Wang D, Sun G, Chiou BS, Macromol. Mater. Eng., 292, 407 (2007)
  •  
  • 8. Poli G, Paci M, Magagnini P, Scaffaro R, Lamantia FP, Polym. Eng. Sci., 36(9), 1244 (1996)
  •  
  • 9. Seo ED, J. Korean Soc. Dye. Finish., 16, 55 (2004)
  •  
  • 10. Qi K, Nakayama K, J. Mater. Sci., 36(13), 3207 (2001)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2015; 39(3): 475-479

    Published online May 25, 2015

  • 10.7317/pk.2015.39.3.475
  • Received on Oct 7, 2014
  • Accepted on Dec 5, 2014