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Use of MTDSC in the detection of weak glass transitions: the hysteresis peak

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A Correction to this article was published on 18 May 2023

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Abstract

Miscibility of poly(butylene terephthalate, PBT) with a PVC plasticizer (PN-250) has been characterized by modulated temperature DSC measurements. The glass transition parameters were measured by total heat flow measurements as the midpoint of the heat capacity increase (for the PBT rich areas) and by creating an endothermic hysteresis peak at the glass transition of the plasticizer, because there was no low temperature baseline due to the low Tg of PN-250. The disadvantage of this method is that it does not allow determination of the heat capacity jump at the glass transition. Partial miscibility was determined between these two components. It was observed that crystallinity of PBT in the blends was much higher than in neat PBT because of the higher segmental mobility of the polymer segments in the blends. The hysteresis peak at the PBT glass transition in the blends is much narrower and more intense than for neat PBT since the mobile amorphous fraction of PBT is higher in the blends. Together with the lower rigid amorphous fraction, this means sharper boundary between the mobile amorphous fraction and the PBT crystallites.

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Authors and Affiliations

  1. Thermal Measurements, 412 Stampede Court, Fort Worth, TX, 76131, USA

    Joseph D. Menczel

  2. Parker Hannifin Corporation, Fluid Connectors Group, 6035 Parkland Boulevard, Cleveland, OH, 44124, USA

    Aditya Jindal & Michael P. Mallamaci

  3. Tonson Abraham Consulting, LLC, 39467 Clayton Drive, Avon, OH, 44011, USA

    Tonson Abraham

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  1. Joseph D. Menczel
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  2. Aditya Jindal
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  3. Michael P. Mallamaci
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  4. Tonson Abraham
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Correspondence to Joseph D. Menczel.

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The original online version of this article was revised: Some of the corrections provided by the author was not implemented in the article by mistake. Few typo errors in the reference list and incorrect reference citations were corrected.

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Menczel, J.D., Jindal, A., Mallamaci, M.P. et al. Use of MTDSC in the detection of weak glass transitions: the hysteresis peak. J Therm Anal Calorim 148, 6047–6057 (2023). https://doi.org/10.1007/s10973-023-12152-x

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