Aug 2026· ChemistrySelect· Vol 11· 0 citations· 20 references
Abstract
The slow crystallization rate of polyethylene terephthalate (PET) remains a major limitation for its processing and application. To address this challenge, a series of PET copolyesters were synthesized via melt polycondensation using multifunctional polyols as modifiers. Experimental findings indicate that among the selected polyols, pentaerythritol (PER) exhibits a uniquely superior nucleating ability, markedly enhancing the crystallization behavior compared to glycerol (GLY) and sorbitol (SOR). Both isothermal and non‐isothermal crystallization analyses revealed that the cold crystallization temperature of PET‐PER
0.5
decreased substantially from 146.3°C to 127.9°C, while the half‐crystallization time (t
1
/
2
) was reduced to 0.7 min (approximately half that of PET) demonstrating a significant acceleration in crystallization kinetics. Furthermore, the incorporation of polyols concurrently improved the thermal stability of the copolyesters. This study confirms that PER serves as an effective crystallization modifier for PET, offering a viable strategy for the development of novel PET materials that combine rapid crystallization capability with enhanced thermal stability.
Poly(ethylene terephthalate) (PET) is an important semicrystalline polymer, but its relatively slow crystallization restricts processing efficiency and dimensional stability. The incorporation of fillers is an effective means of promoting PET crystallization, while the resulting polymer–filler interface may also alter...
Yun-Yi Cai, Du-Sheng Yao, Bei-Bei Kong et al.· Crystals· 0 citations
To address the insufficient toughness and transparency of nylon-6 (PA6) caused by high crystallinity, this study proposes a copolymer strategy based on side-methyl structural regulation. A series of PA6/D6 copolyamides were prepared via in situ melt copolymerization of ε-caprolactam, 2-methyl-1,5-pentanediamine, and...
Ming-Tao Wu, Weihong Zeng, Yun-Qi Xu et al.· Industrial & Engineering...· 0 citations
Poly(ethylene terephthalate-co-furanoate) (PETF) copolymers offer a promising route to improve the sustainability and performance of poly(ethylene terephthalate) (PET)-based materials. In this study, PETF copolymers containing 10 and 30 wt % poly(ethylene furanoate) (PEF) were produced via reactive extrusion, where s...
M. Suryawanshi, A. Kadiyala, Karl O. Stuen et al.· ACS Applied Polymer Material...· 0 citations
Poly(1,4-cyclohexanedimethylene terephthalate) (PCT) suffers from a narrow melt-processing window and low elongation at break, limiting manufacturability and toughness. Rigid 1,4-benzenedimethanol (BDM) was incorporated via melt polycondensation, followed by solid-state polymerization to increase molar mass, and poly...
Herein, a highly rigid monomer, 2-(2-hydroxyethyl)-1,3-dioxoisoindoline-5-carboxylic acid (HTI), was readily prepared from biosourced malic acid. A series of PET copolyesters were fabricated through an in situ chemical upcycling strategy, in which HTI units were inserted into the backbones of the PET waste via a depo...
