Evidences of Transesterification, Chain Branching and Cross‐Linking in a Biopolyester Commercial Blend upon Reaction with Dicumyl Peroxide in the Melt

Signori, Francesca; Boggioni, Alessia; Righetti, Maria Cristina; Rondán, Consuelo Escrig; Bronco, Simona; Ciardelli, Francesco

doi:10.1002/mame.201400187

Cited by 52 publications

(31 citation statements)

References 43 publications

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“…This indicated that the formed PLA/PBAT blends are not thermodynamically miscible. Similar results were reported by (Signori et al 2015) regarding PLA/PBAT blends containing 75 wt% of PLA.…”

Section: Thermal Propertiessupporting

confidence: 89%

Effect of empty fruit bunches microcrystalline cellulose (MCC) on the thermal, mechanical and morphological properties of biodegradable poly (lactic acid) (PLA) and polybutylene adipate terephthalate (PBAT) composites

Izzati

John

Fazita

et al. 2020

Mater. Res. Express

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Nowadays, awareness of the environment is rising among society. Thus, more researches on the utilization of biodegradable polymer as an alternative to non-biodegradable polymers have been published. Among various biopolymers, Poly (lactic acid) (PLA) and polybutylene adipate terephthalate (PBAT) have received a lot of attention because they can be processed using most of the conventional polymer processing methods. PLA is high in strength and modulus, but it is brittle while PBAT is flexible and tough. Thus, PBAT is a good candidate for the toughing of PLA. But when the PLA is blending with PBAT, a certain strength of PLA may be affected. Hence, the reinforcement material is required to improve weakened strength. In this study, PLA was blended with PBAT at various ratios (PLA: PBAT=90: 10, 80: 20, 70: 30) with a melt-blending method. The PLA/PBAT blends at a blend ratio of 80: 20, exhibited optimum mechanical performance. Then, PLA/PBAT blends at a blend ratio of 80: 20 was reinforced with different content of EFB-MCC (1 wt%, 3 wt% and 5 wt%) using an internal mixer. The PLA/PBAT blends reinforced with EFB-MCC composites were produced using the compression moulding method. The mechanical, thermal and morphology properties of the composites were investigated. The impact strength of PLA/PBAT blend after addition of both C-MCC and EFB-MCC up to 5 wt% was reduced. The morphological observations from SEM proved the occurrence of the MCC agglomeration in PLA/PBAT blend. DSC results showed trivial changes between the Tg and Tm of PLA/PBAT blend with PLA/PBAT blend reinforced with both types of MCC. TGA results demonstrated that the PLA/PBAT blend reinforced with EFB-MCC has better thermal stability compared to C-MCC. However, further research is needed to improve the interfacial properties of the immiscible PLA/PBAT by compatibilization and enhance the properties of the MCC reinforced PLA/PBAT blend composites.

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Section: Thermal Propertiessupporting

confidence: 89%

Effect of empty fruit bunches microcrystalline cellulose (MCC) on the thermal, mechanical and morphological properties of biodegradable poly (lactic acid) (PLA) and polybutylene adipate terephthalate (PBAT) composites

Izzati

John

Fazita

et al. 2020

Mater. Res. Express

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“…To evaluate the interaction between zeolite and PBAT, FTIR spectra for the membrane containing zeolite Y (PBAT/ZYC10%) and its precursors (ZYNa‐C and PBAT) were obtained (Figure ). Bands referring to PBAT and zeolite Y were both noticed in FTIR spectra of PBAT/ZYC10% sample, as shown in Table . No strong interaction must occur between PBAT and zeolite Y.…”

Section: Resultsmentioning

confidence: 89%

Development of composite membrane PBAT: Zeolite Y for application as rhynchophorol release system

Correia

Ramos

Viana

et al. 2017

J of Applied Polymer Sci

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Composite membranes consisting of biodegradable poly(butylene adipate‐co‐terephthalate (PBAT) and zeolite Y (0–10 wt %) were produced by extrusion. Zeolite Y is well dispersed in the membrane up to 5 wt %, but tends to agglomerate at higher contents. The presence of zeolite Y in the composite resulted in an improvement of the thermal stability, mechanical properties, and increased the barrier properties. The interaction of the composite membranes with rhynchophorol was investigated by different techniques, showing that the semiochemical progressively lixiviates PBAT monomers, causing thermal and mechanical properties to decrease. However, no interaction seemed to occur between the rhynchophorol and the zeolite. Studies of diffusion of pheromone through membranes have shown that the addition of the zeolite Y has not contributed significantly to a decrease in the release rate of rhynchophorol, but the presence of the zeolite Y helps to increase chemical, mechanical, and thermal stabilities of the membranes. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45757.

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“…For example, impact strength value for pure PLA/PBAT blend was only 60 J/m, while for PLA/ PBAT blends after in-situ compatibilization with DCP was 110 J/m. Signori et al [98] modified commercial aliphatic polyesters blend (based on PLA and PBAT) with trade name Ecovio ® from BASF using variable content (0-0.2 wt%) of dicumyl peroxide. It was found that free radical promoted radical chain branching and cross-linking of PLA/PBAT blends.…”

Section: Aliphatic Polyesters Blendsmentioning

confidence: 99%

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

Formela¹,

Zedler²,

Hejna³

et al. 2018

Express Polym. Lett.

112

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Abstract.Reactive extrusion is a cost-effective and environmentally-friendly method to produce new materials with enhanced performance properties. At present, reactive extrusion allows in-situ polymerization, modification/functionalization of polymers or chemical bonding of two (or more) immiscible phases, which can be carried out on commonly used extrusion lines. Although reactive extrusion has been known for many years, its application for processing of bio-based polymer blends and composites is a relatively new direction of scientific research. This work presents a literature review on recent advances in the processing of bio-based polymer blends and composites via reactive extrusion. We described compatibilization mechanisms for different types of biodegradable polymeric materials based on: (i) aliphatic polyesters, (ii) aliphatic polyesters/starch and (iii) aliphatic polyester/natural rubber systems. A special attention was focused on conventional and dynamic cross-linking of bio-based polymer blends and composites as an effective way to prepare new materials with unique properties e.g. biodegradable thermoplastic elastomers or shape-memory materials. Advantages and limitations affecting future trends in development of biodegradable polymer blends and composites reactive extrusion are also discussed.

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Evidences of Transesterification, Chain Branching and Cross‐Linking in a Biopolyester Commercial Blend upon Reaction with Dicumyl Peroxide in the Melt

Cited by 52 publications

References 43 publications

Effect of empty fruit bunches microcrystalline cellulose (MCC) on the thermal, mechanical and morphological properties of biodegradable poly (lactic acid) (PLA) and polybutylene adipate terephthalate (PBAT) composites

Effect of empty fruit bunches microcrystalline cellulose (MCC) on the thermal, mechanical and morphological properties of biodegradable poly (lactic acid) (PLA) and polybutylene adipate terephthalate (PBAT) composites

Development of composite membrane PBAT: Zeolite Y for application as rhynchophorol release system

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

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