Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Thermal Properties and Alkaline Weight Reduction of Anionic Copolyesters/Dodecylbenzenesulfonate Blend Films

음이온성 공중합 폴리에스터/Dodecylbenzenesulfonate 블렌드 필름의 열적 특성 및 알칼리 감량

  • Jee, Min Ho (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Lee, Jong Hwan (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Hong, Choong Hee (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Eom, Dae Gil (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Kim, Sun Hong (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Choi, Jin Uk (KOLON FM Research Center) ;
  • Baik, Doo Hyun (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
  • 지민호 (충남대학교 유기소재.섬유시스템 공학과) ;
  • 이종환 (충남대학교 유기소재.섬유시스템 공학과) ;
  • 홍충희 (충남대학교 유기소재.섬유시스템 공학과) ;
  • 엄대길 (충남대학교 유기소재.섬유시스템 공학과) ;
  • 김선홍 (충남대학교 유기소재.섬유시스템 공학과) ;
  • 최진욱 (코오롱 FM 연구소) ;
  • 백두현 (충남대학교 유기소재.섬유시스템 공학과)
  • Received : 2013.12.22
  • Accepted : 2014.02.04
  • Published : 2014.02.28
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Abstract

A series of anionic copolyester/dodecylbenzenesulfonate (DBS) blend films were prepared by a melt-compounding method and then annealed under a range of conditions. To eliminate possible experimental errors in measuring the alkaline reduction rate of the samples, the crystallinity should be uniform. We used Fourier transform infrared (FT-IR) spectroscopy to measure and control the relative crystallinity of the annealed samples. The relationship between the crystallinity and reduction rate, as well as the annealing conditions of the annealed blend samples, was derived. FT-IR analysis showed that the crystallization rate of copolyester/DBS blend films is lower than that of pure copolyester. However, the alkaline weight reduction rate of the blend films, which have similar crystallinities, increases dramatically with increasing DBS content, even at a low DBS content of 1 to 3 wt%, although the effect of the DBS becomes negligible above 5 wt%. However, unlike the result for annealed films, the alkaline weight reduction rate for amorphous films exhibited a linear relationship between the alkaline reduction rate and the DBS content for all of the examined DBS content, demonstrating that the effects of the DBS on the alkaline weight reduction of the copolysester could be affected by processing conditions such as post-drawing and annealing.

Keywords

References

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