Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Chain Orientation Behavior of Poly(butylene terephthalate-co-tetramethylene oxide) upon Uniaxial Deformation

일축연신에 의한 Poly(butylene terephthalate-co-tetramethylene oxide) 고분자쇄의 배향 거동

  • Published : 1993.01.01

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Abstract

The segmental orientation behavior of the thermoplastic elastomer [poly(butylene terephthalate-co-tetramethylene oxide)] is studied with infrared dichroism and polarizing microscope. The orientation function of soft segment is observed to be distinctively different from that of hard segment. It is rationalized with the difference in the glass transition temperatures of soft and hard segments which are about -80 and 45$^{\circ}C$, respectively. The birefringences observed through the polarizing microscope as a function of draw ratio resemble the orientation functions of hard segments. It is explained in terms of the n electrons in hard segment with affect the refractive index more strongly than o and non-bonded electrons.

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References

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