Thinking Green: Sustainable Polymers from Renewable Resources

Papageorgiou, George Z.

doi:10.3390/polym10090952

Cited by 83 publications

(53 citation statements)

References 50 publications

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“…The progressive increase observed was representative of the great variety of bonds and the multiphasic character of its conversion. It might correspond to competitive or consecutive reactions (Carrier et al, 2016;Papageorgiou, 2018). The average E α values were determined as 207.632 kJ mol -1 , 206.099 kJ mol -1 and 207.328 kJ mol -1 for Friedman, FWO and Tang methods, respectively.…”

Section: Model-free Methodsmentioning

confidence: 99%

Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators

Yao

et al. 2019

Waste Manag Res

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Thermal treatment offers advantages of significant volume reduction and energy recovery for the polyurethane foam from waste refrigerators. In this work, the pyrolysis kinetics of polyurethane foam was investigated using the model-fitting, model-free and distributed activation energy model methods. The thermogravimetric analysis indicated that the polyurethane foam decomposition could be divided into three stages with temperatures of 38°C–400°C, 400°C–550°C and 550°C–1000°C. Peak temperatures for the major decomposition stage (<400°C) were determined as 324°C, 342°C and 344°C for heating rates of 5, 15 and 25 K min-1, respectively. The activation energy ( Eα) from the Friedman, Flynn–Wall–Ozawa and Tang methods increased with degree of conversion ( α) in the range of 0.05 to 0.5. The coefficients from the Flynn–Wall–Ozawa method were larger and the resulted Eα values fell into the range of 163.980–328.190 kJ mol-1 with an average of 206.099 kJ mol-1. For the Coats–Redfern method, the diffusion models offered higher coefficients, but the E values were smaller than that from the Flynn–Wall–Ozawa method. The Eα values derived from the distributed activation energy model method were determined as 163.536–334.231 kJ mol-1, with an average of 206.799 kJ mol-1. The peak of activation energy distribution curve was located at 205.929 kJ mol-1, consistent with the thermogravimetric results. The Flynn–Wall–Ozawa and distributed activation energy model methods were more reliable for describing the polyurethane foam pyrolysis process.

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Section: Model-free Methodsmentioning

confidence: 99%

Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators

Yao

et al. 2019

Waste Manag Res

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“…The problem of depletion of fossil raw materials has become of global importance and is complicated not only by economic but also environmental and political factors [ 1 ]. However, synthetic polymers are still one of the most widely used materials in everyday use.…”

Section: Introductionmentioning

confidence: 99%

Non-Conventional Features of Plant Oil-Based Acrylic Monomers in Emulsion Polymerization

et al. 2020

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In recent years, polymer chemistry has experienced an intensive development of a new field regarding the synthesis of aliphatic and aromatic biobased monomers obtained from renewable plant sources. A one-step process for the synthesis of new vinyl monomers by the reaction of direct transesterification of plant oil triglycerides with N-(hydroxyethyl)acrylamide has been recently invented to yield plant oil-based monomers (POBMs). The features of the POBM chemical structure, containing both a polar (hydrophilic) fragment capable of electrostatic interactions, and hydrophobic acyl fatty acid moieties (C15-C17) capable of van der Waals interactions, ensures the participation of the POBMs fragments of polymers in intermolecular interactions before and during polymerization. The use of the POBMs with different unsaturations in copolymerization reactions with conventional vinyl monomers allows for obtaining copolymers with enhanced hydrophobicity, provides a mechanism of internal plasticization and control of crosslinking degree. Synthesized latexes and latex polymers are promising candidates for the formation of hydrophobic polymer coatings with controlled physical and mechanical properties through the targeted control of the content of different POBM units with different degrees of unsaturation in the latex polymers.

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“…Bio-based and biodegradable polymers such as chitosan [1], agarose [2], gelatin [3] and silk [4] have received a considerable attention in recent years, even more than what an optimistic could hope, due to ever increasing sustainable development. Environmental threats and resource limitations are the main issues accompanied by the use of fuel-based polymers [5][6][7][8][9]. Such debates have aligned the developed countries in the need of replacement of unsustainable routes in manufacturing advanced materials and systems as well as developing modern technologies to draw a green horizon of opportunities upon material design [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Biodegradable polyester thin films and coatings in the line of fire: the time of polyhydroxyalkanoate (PHA)?

Vahabi

Rad

Parpaite

et al. 2019

Progress in Organic Coatings

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From sustainability standpoint, bio-based resins are of crucial importance nowadays rather than fossilbased resins, but the former has lower flame retardancy. Bio-based coatings are in their early stages; therefore, a long way must be gone to make them resistant against flame. Polylactic acid (PLA)-based biodegradable coatings have been in the core of attention, but one can rarely find reports on flame retardancy of bio-based thin films and coatings. Attention should also be paid to the fact that firstgeneration biodegradable polyesters, PLAs, are hooked on crop consumption. On the other hand, polyhydroxyalkanoates (PHAs) with more or less similar structure, but different physical properties arising from their lower glass transition temperature compared with PLAs, are known as the secondgeneration of bio-polyester. Overall, we highlight here that PHAs might a better candidate for thin film manufacturing thanks to their synthesis by microorganism. Though mass production of PHAs is not costeffective these days and their market just entered into the growth phase, we suggest study on flame retardancy of PHA-based resins, thin films, and coatings. This short communication deals with the current status and future ahead of PHA-based flame retardant thin films and coatings.

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Thinking Green: Sustainable Polymers from Renewable Resources

Abstract: n/a

Cited by 83 publications

References 50 publications

Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators

Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators

Non-Conventional Features of Plant Oil-Based Acrylic Monomers in Emulsion Polymerization

Biodegradable polyester thin films and coatings in the line of fire: the time of polyhydroxyalkanoate (PHA)?

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