Multiscale study of poly(butylene terephthalate) hydrolysis

Loyer, Camille; Régnier, Gilles; Duval, V.; Richaud, Emmanuel

doi:10.1016/j.polymdegradstab.2021.109690

Cited by 4 publications

(3 citation statements)

References 40 publications

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“…Although the degree of crystallinity was higher for the blends in our study, other antagonistic effects, namely, chain scission due to hydrolysis and porosity, were observed. [ 52 ] 3D printing was cited as a process that can introduce voids and internal pores into molded parts, generating a potential reduction in mechanical properties, being the object of a modeling study to allow the prediction of the elastic properties of the 3D printed material based on its porosity. [ 53 ] In summary, although the porosity of the samples and the elastomer effect pointed to a decrease in modulus and strength, this may have been counteracted by the increase in the crystallinity of the system.…”

Section: Resultsmentioning

confidence: 99%

Effect of amine‐reactive elastomer on the properties of poly(lactic acid) films obtained by solvent‐cast3Dprinting

Oliveira

Nonato

Bonse

et al. 2022

Polymer Engineering & Sci

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Blends of poly(lactic acid) (PLA) and amine-terminated butadiene-acrylonitrile (ATBN) elastomer were prepared by solution with ATBN contents of 8-20 wt%. Films were molded by liquid deposition modeling 3D printing. Fourier transform infrared (FTIR) spectroscopy showed that the terminal carboxylic groups of the PLA chains reacted with the terminal amino groups of ATBN. Water was the byproduct of this reaction, causing PLA hydrolysis and accelerating the reaction. Thermogravimetric analysis (TGA) showed that components interaction caused a loss of PLA thermal stability. Scanning electron microscopy (SEM) of the blends revealed a porous morphology and no phase separation. There was change in the elongation when compared with neat PLA. Although the addition of a telechelic elastomer could improve PLA toughness, any benefits arising from such addition seem to be neutralized by PLA chain scission due to hydrolysis and porosity, resulting from the condensation reaction.

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Section: Resultsmentioning

confidence: 99%

Effect of amine‐reactive elastomer on the properties of poly(lactic acid) films obtained by solvent‐cast3Dprinting

Oliveira

Nonato

Bonse

et al. 2022

Polymer Engineering & Sci

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“…It would be interesting to complete the process map with additional considering the PBT hydrolysis [43] . The possibility to broaden this processing map by chain extenders and or hydrolysis retardants such as diazocarbodimides [44] or epoxide by products [45] is also of interest for manufacturers and would offer to scientist the possibility to complete the proposed kinetic models.…”

Section: Discussionmentioning

confidence: 99%

Embrittlement of polybutylene terephthalate induced by injection molding

Loyer

Ferreira

Marijon

et al. 2022

Polymer Degradation and Stability

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“…Blending with PBT has been shown to be an effective route to recover the noted properties through enhancing the melt viscosity, processability, and mechanical performance of rPET. − This is due to the high compatibility of PBT with PET as a result of their similar terephthalate backbone, as well as the easier processability, , fast crystallization, , and good foamability , of PBT, which is in contrast with those features of PET. While PET and PBT are almost fully miscible in their amorphous phases, the miscibility of their crystalline phases is highly dependent on the processing condition. , It has been shown that when the processed PET/PBT blends are fast-cooled, crystalline phases are immiscible, whereas slow cooling could cause the cocrystallization of PET and PBT, leading to the full miscibility of PET and PBT polymers .…”

Section: Introductionmentioning

confidence: 99%

Melt Rheological and Bead Foaming Behavior of Recycled Polyethylene Terephthalate/Polybutylene Terephthalate Blends Modified with a Joncryl Chain Extender

Akdevelioğlu,

Himmelsbach,

Ruckdäschel

et al. 2024

Ind. Eng. Chem. Res.

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This study investigates the melt rheological properties and foamability of recycled polyethylene terephthalate (rPET) and its blends with polybutylene terephthalate (PBT) modified through an epoxy-based Joncryl ADR 4468 chain extender. A twinscrew extruder was used to prepare rPET/PBT blends at various weight ratios (i.e., 100/0, 75/25, 50/50, 25/75, and 0/100) and with varying Joncryl chain extender contents (i.e., 0.25, 0.5, 0.75, and 1.0 wt %). The small-amplitude oscillatory shear rheological experiments were conducted to analyze the melt viscoelastic behavior of the samples. The melt strength and strain-hardening behavior of the compounds were examined by measuring the extensional rheology and Rheotens tests. Crystallization analysis was conducted on the processed samples by using differential scanning calorimetry. The bead foaming behavior of the samples was investigated using a batch-based foaming reactor with supercritical CO 2 . Both compounding with PBT and Joncryl chain modification increased the complex viscosity, melt strength, and strain-hardening behavior of the blends, while their synergistic effect revealed a more noticeable enhancement. Although direct modification of rPET with Joncryl and its direct compounding with PBT could not generate a meaningful foam structure, a homogeneous microcellular foam structure could successfully be induced when 25 wt % rPET was incorporated in blends with PBT modified with 1.0 wt % Joncryl.

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Multiscale study of poly(butylene terephthalate) hydrolysis

Cited by 4 publications

References 40 publications

Effect of amine‐reactive elastomer on the properties of poly(lactic acid) films obtained by solvent‐cast3Dprinting

Effect of amine‐reactive elastomer on the properties of poly(lactic acid) films obtained by solvent‐cast3Dprinting

Embrittlement of polybutylene terephthalate induced by injection molding

Melt Rheological and Bead Foaming Behavior of Recycled Polyethylene Terephthalate/Polybutylene Terephthalate Blends Modified with a Joncryl Chain Extender

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