Relationship between Polyester Quality and Processability: Hands‐On Experience

Göltner, W.

doi:10.1002/0470090685.ch13

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…Therefore, the crystallization kinetics was followed by measuring the melting enthalpy of the crystallized material (see Figure 4). Thus, from the integration of these signals, it was possible to evaluate the average sequence length of both ethylene terephthalate (ET) and isosorbide terephthalate (IT) moieties with the following equations [12]:…”

Section: Isothermal Crystallization Kineticsmentioning

confidence: 99%

Isothermal Crystallization Kinetics of Poly(ethylene terephthalate) Copolymerized with Various Amounts of Isosorbide

et al. 2020

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Poly(ethylene-co-isosorbide terephthalate) (PEIT) copolyesters could be used in various applications depending on their ability to crystallize. Moreover, the possibility to carry out solid-state post-condensation (SSP) is conditioned by its ability to sufficiently crystallize. The present study, thus, gives a systematic investigation of isothermal crystallization of these statistical copolyesters with isosorbide contents ranging from 4.8 to 20.8 mol.%. For each copolyester composition, the lowest isothermal half crystallization times and the highest Avrami constant (K) were obtained around 170 °C. Over the range of composition that was studied, both melting points and melting enthalpies decreased with increasing amounts of isosorbide (from 250 to 207 °C and from 55 to 28 J/g, respectively). On the contrary, half crystallization time displayed an exponential increase when increasing isosorbide contents in the studied range. Finally, structural and thermal analysis of PIT homopolyester are reported for the first time, showing that only ET moieties crystallized when PEIT was subjected to isothermal crystallization at 170 °C.

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Section: Isothermal Crystallization Kineticsmentioning

confidence: 99%