Mechanical, thermal properties and isothermal crystallization kinetics of biodegradable poly(butylene succinate-co-terephthalate) (PBST) fibers

Biodegradable copolymer poly(butylene succinate-co-terephthalate), with 70 mol% butylene terephthalate, was melt-spun into fibers with take-up velocity of 2 km/min

Faxue Li; Shengli Luo; Jianyong Yu

2009

Key concepts

Scholarcy highlights

  • Biodegradable copolymer poly(butylene succinate-co-terephthalate), with 70 mol% butylene terephthalate, was melt-spun into fibers with take-up velocity of 2 km/min
  • DSC results showed high melting temperature of PBST fibers helpful to the textile processing compared to other biodegradable polyesters
  • Isothermal crystallization behaviors of PBST fibers at low and high supercoolings were investigated by DSC and DLI, respectively
  • The measurement of crystallization kinetics at low supercoolings indicated that Avrami exponent n for PBST fibers was at a range of 2.9 to 3.3, corresponding to the heterogeneous nucleation and a 3-dimensional spherulitic growth
  • Similar results were given for isothermal crystallization behavior at high supercoolings investigated by DLI technique
  • The equilibrium melting temperature of PBST fibers was obtained for 206.5 °C by Hoffman-Weeks method
  • Mechanical, thermal properties and isothermal crystallization kinetics of biodegradable poly(butylene succinate-co-terephthalate) fibers

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