Melt Mixing of Ethylene/Butyl Acrylate/Glycidyl Methacrylate Terpolymers with LDPE and PET

Abstract

The chemical modification by melt‐mixing of an EBAGMA terpolymer with LDPE and PET was investigated with the aim to use these EBAGMA/LDPE and EBAGMA/PET blends (in equal weight quantities) as compatibilizer master batches to improve the compatibility of the LDPE/PET system. It is shown that when the EBAGMA terpolymer is melt blended with LDPE, almost 40% of the initial amount of EBAGMA is linked to the LDPE backbone. In contrast, in the case of EBAGMA/PET, FT‐IR spectra indicate the total reactivity between the two components through the reaction of the epoxy group of EBAGMA with the PET terminal groups. SEM analysis shows that both master batches present two well‐interconnected phases.magnified image

Rheological behavior and morphological and interfacial properties of PLA/TPE blends

“…The compatibilization of the PLA30TPU blend with EBG seemed to increase the SS domain thermal stability, considering that the other two decomposition peaks at 409 °C ( T dmax3) and 470 °C ( T dmax4 ) had a mass loss of about 15% and that the EBG content in this blend was 5 wt %. In their study on blends of low‐density polyethylene/PET compatibilized by EBG, Benhamida et al . attributed the last two decomposition temperatures to the thermal decomposition of EBG.…”

Preparation and properties of polyethylene terephthalate/polyethylene/near infrared reflective pigment composites

“…PET showed clear diffraction patterns at 16.4°, 17.7°, 22.8°, 26.2° for the corresponding crystal planes of (0 −1 1), (0 1 0), (1 −1 0), and (−1 0 3) . In addition, the characteristic diffraction peaks of 21.6° and 24° were corresponding to the HDPE orthorhombic crystal plane (110) and (200), respectively, in combination with a broad amorphous halo . For PET/N‐HDPE composites, the major diffraction peak remained unchanged, except for the observed NIR diffraction peaks at 27.4° (110), 36.0° (101), 54.2° (211), and the decreased intensity of diffraction peaks for PET with increasing HDPE contents (omitted for brevity).…”

Evaluation of the Effectiveness of New Compatibilizers Based on EBAGMA‐LDPE and EBAGMA‐PET Masterbatches for LDPE/PET Blends

“…However, in comparison with blends containing MB1, the SEM micrographs of LDPE/PET/MB2 exhibit small domains of PET dispersed in LDPE matrix, with almost 5 mm size. According to our previous work, [15] this morphology could be explained by the fact that GMA groups have already reacted with PET during the preparation of MB2. Indeed, the extraction tests showed that no EBAGMA was extracted, indicating total reactivity of EBAGMA with PET through the reaction of the epoxy group of EBAGMA terpolymer with the hydroxyl and COOH groups of PET during MB2 preparation.…”

“…This could cause EBAGMA molecules to preferentially orient at the LDPE surface such that the polar part of EBAGMA would stay on the surface and the non-polar part will be diffused inside the LDPE. [15] When PET is added, such an orientation of EBAGMA would facilitate the interactions between PET and GMA right at LDPE/PET interface, [3] as observed in the study of the morphology by SEM exhibiting a finer dispersion of PET in the LDPE matrix.…”

“…In the study undertaken by our group, we intended to examine one such aspect, viz., how to improve the efficiency of the EBAGMA compatibilization? This would be achieved by investigating (i) the modification of EBAGMA by premixing with LDPE and PET; this was the topic of the first paper of this series; [15] (ii) the study of the influence of the addition of masterbatches (MB) on the morphology and the properties of LDPE/PET virgin and recycled blends. These results will be the subject of the present paper and the third one of these series.…”