Aromatic But Sustainable: Poly(butylene 2,5-furandicarboxylate) as a Crystallizing Thermoplastic in the Bioeconomy

结晶 过冷 等温过程 玻璃化转变 热塑性塑料 熔点 聚酯纤维 活化能 高分子化学 乙烯 动力学 聚合物 化学 化学工程 热力学 材料科学 有机化学 复合材料 工程类 催化作用 物理 量子力学
作者
Niki Poulopoulou,George N. Nikolaidis,Raphael O. Ioannidis,Vassa L. Efstathiadou,Zoi Terzopoulou,Dimitrios G. Papageorgiou,Maria Kapnisti,George Z. Papageorgiou
出处
期刊:Industrial & Engineering Chemistry Research [American Chemical Society]
卷期号:61 (36): 13461-13473 被引量:7
标识
DOI:10.1021/acs.iecr.2c02069
摘要

Aliphatic/aromatic thermoplastic polyesters are a very interesting family of polymers with many applications. Poly(alkylene 2,5-furandicarboxylate)s (PAF)s are the biobased alternatives to poly(alkylene terephthalate)s and are expected to play a key role in bioeconomy. The most important PAFs are poly(ethylene 2,5-furandicarboxylate) (PEF), poly(propylene 2,5-furandicarboxylate) (PPF), and poly(butylene 2,5-furandicarboxylate) (PBF), which crystallize slowly. PBF shows a typical PAF thermal behavior but a little faster crystallization compared to that of PPF and PEF. PBF was used in this work as a model material to understand the key parameters of the solidification of PAFs during processing. A detailed study of the kinetics of isothermal and dynamic melt and cold crystallization of PBF at very slow and moderate cooling and heating rates (0.1–20 °C/min) was carried out. Multiple melting was also analyzed. The equilibrium melting temperature was determined (Tmo = 196.4 °C). The activation energy of non-isothermal crystallization from the melt decreased with increasing the cooling rate, in accordance with an increasing crystallization rate with supercooling. The cold-crystallization rate increased with increasing the difference between the cold-crystallization temperature (Tcc) and the glass transition temperature (Tg), which in turn increased with the heating rate. Several theoretical models were elaborated for the treatment of the crystallization data. Polarized optical microscopy revealed the formation of ring-banded spherulites at elevated temperatures (Tc)s.
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