Degradation of polymer blends: A brief review

Mantia, Francesco Paolo La; Morreale, Margherita; Botta, Luigi; Mistretta, Maria Chiara; Ceraulo, M.; Scaffaro, R.

doi:10.1016/j.polymdegradstab.2017.07.011

Cited by 219 publications

(127 citation statements)

References 82 publications

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“…According to Mantia et al [107], the degradation routes of BPs are generally related to depolymerization of the macromolecule into radicals due to the action of certain external driving forces (temperature, mechanical stress, radiations, etc.) and to the subsequent reactions of these radicals with the environment.…”

Section: Degradationmentioning

confidence: 99%

An overview on properties and applications of poly(butylene adipate‐co‐terephthalate)–PBAT based composites

Ferreira

Cividanes

Gouveia

et al. 2017

Polymer Engineering & Sci

333

149

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There is growing interest in biodegradable polymers (BP), in particular poly(butylene adipate‐co‐terephthalate) (PBAT), due to environmental problems associated with the disposal of non‐biodegradable polymers into the environment. However, high production cost and low thermo‐mechanical properties restrict the use of this sustainable material, making its biodegradability advantageous only when it is decisively required. The addition of different compositions of monomers and selective addition of natural fillers have been reported as alternatives to develop more accessible PBAT‐based bioplastics with performance that could match or even exceed that of the most widely used commodity plastics. This review explores the recent progress of the applications and biodegradation of PBAT. The addition of natural fillers and its effect on the final performance of the PBAT‐based composites is also reported with respect to improving the properties of composites. The advance of polymerization reaction engineering combined with sustainable trend offers great opportunities for innovative green chemical manufacturing. POLYM. ENG. SCI., 59:E7–E15, 2019. © 2017 Society of Plastics Engineers

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Section: Degradationmentioning

confidence: 99%

An overview on properties and applications of poly(butylene adipate‐co‐terephthalate)–PBAT based composites

Ferreira

Cividanes

Gouveia

et al. 2017

Polymer Engineering & Sci

333

149

View full text Add to dashboard Cite

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“…Only the blend with 20% of degraded material shows a drastic drop of the crystallinity, due to the rupture of the chains, caused by the polyethylene oxidation. This behavior modifies the structure of the blends by decreasing the initial molecular weight of the reprocessed blends [12,[29][30][31]. (2) Melt Flow Index (MFI) Assessment.…”

Section: Study Of the Degraded Materials/ldpe Blends Reprocessingmentioning

confidence: 99%

Effect of the Prodegradant-Additive Plastics Incorporated on the Polyethylene Recycling

Aldás

Paladines

Valle

et al. 2018

International Journal of Polymer Science

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The effect of degraded plastic with prodegradants on the polyethylene properties was studied. First, the mixture of low-density polyethylene (LDPE) with 5 wt.% prodegradant (oxo-degradable) additive was prepared by melt processing using a mixer chamber. Then, the degradation of the mixtures was evaluated by exposing the oxo-degradable LDPE in a Xenon arc chamber for 300 hours. The degraded material was characterized by infrared spectroscopy (FTIR) assessing the carbonyl index and the hydroperoxide band. Then, different percentages of degraded material (1, 5, 10, 20, and 50 wt.%) were incorporated into the neat LDPE. Mechanical and rheological tests were carried out to evaluate the recycling process of these blends. Also, the feasibility of the blends reprocessing was determined by analysing the melt flow index for each heating process and shear stress applied. It was evidenced that the increment of the content of the degraded material in the neat LDPE decreased the mechanical strength and the processability of blends due to the imminent thermal degradation. All the test results showed that the incorporation of degraded material causes a considerable reduction in the matrix properties during the reprocessing. Nevertheless, at low concentrations, the properties of the oxo-degradable LDPE-LDPE blends were found to be similar to the neat LDPE.

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“…An improvement in the stability during processing and, hence, in many other properties, may be achieved by blending PET with other polymers or copolymers , forming polymer blends. The addition of chemically active copolymers to PET is an effective way of modifying its properties and thus, obtaining desirable results.…”

Section: Introductionmentioning

confidence: 99%

Effect of copolymers containing glycidyl methacrylate functional groups on the rheological, mechanical, and morphological properties of poly(ethylene terephthalate)

Nascimento

Agrawal

Mélo

2018

Polymer Engineering & Sci

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The aim of this work was to investigate the effect of ethylene‐glycidyl methacrylate (EGMA) and ethylene‐methyl acrylate‐glycidyl methacrylate (EMAGMA) copolymers on the rheological, mechanical, and morphological properties of Poly(ethylene terephthalate) (PET). The results of torque rheometry showed an increase in the torque of PET with the addition of EGMA and EMAGMA copolymers due to the reactions between the GMA groups present in the copolymers and the carboxyl and hydroxyl groups present in PET. The torque of PET/copolymer blends increased with the increase in the copolymer content and was more pronounced for the blends containing EGMA copolymer. X‐ray diffraction and differential scanning calorimetry analyzes showed that neat PET and the PET in PET/copolymer blends are amorphous. The addition of EGMA and EMAGMA copolymers delayed the crystallization of PET. Rheological measurements showed an increase in the viscosity at low frequencies with the addition of EGMA and EMAGMA copolymers to PET. This increase was more pronounced for PET/copolymer blends containing higher amount of copolymers and for the blends containing EGMA, corroborating the results obtained by torque rheometry. The impact strength of PET/EMAGMA blends was higher than that of PET/EGMA blends. Morphology analysis by SEM showed that PET/EMAGMA blends presented higher average dispersed phase domains size than PET/EGMA blends. POLYM. ENG. SCI., 59:683–693, 2019. © 2018 Society of Plastics Engineers

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Degradation of polymer blends: A brief review

Cited by 219 publications

References 82 publications

An overview on properties and applications of poly(butylene adipate‐co‐terephthalate)–PBAT based composites

An overview on properties and applications of poly(butylene adipate‐co‐terephthalate)–PBAT based composites

Effect of the Prodegradant-Additive Plastics Incorporated on the Polyethylene Recycling

Effect of copolymers containing glycidyl methacrylate functional groups on the rheological, mechanical, and morphological properties of poly(ethylene terephthalate)

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