Bio-based routes to synthesize cyclic carbonates and polyamines precursors of non-isocyanate polyurethanes: A review

Ghasemlou, Mehran; Daver, Fügen; Ivanova, Elena P.; Adhikari, Benu

doi:10.1016/j.eurpolymj.2019.06.032

Cited by 117 publications

(104 citation statements)

References 101 publications

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“…Numerous reviews on PHUs dealt specially with the synthesis of new cyclic carbonate monomers. [14,15,22,23,25,26] Furthermore, the parameters affecting the ring opening of cyclic carbonates with amines have been fully described and analyzed in order to reach targeted properties. A large number of properties has thus been met, making PHUs promising candidates for the substitution of PUs.…”

Section: Development Of Phusmentioning

confidence: 99%

“…[14][15][16][17][18][19][20] Other teams chose to focus on sustainable development with presentation of biobased cyclic carbonates and amines as well as "green" routes for the PHUs synthesis. [21][22][23] Furthermore, the valorization of CO2 has appeared as a promising way avoid release of CO2 in atmosphere. Therefore, the conversion of CO2 into valuable products is a major concern of sustainable development.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid polyhydroxyurethanes: How to overcome limitations and reach cutting edge properties?

Ecochard

Caillol

2020

European Polymer Journal

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The restrictions on isocyanate substances have encouraged researchers to find alternative methods for the synthesis of Polyurethanes (PUs). New pathways have been designed with focus on non-hazardous and eco-friendly substances. The reaction of cyclic carbonates and amines has appeared as the most promising substitute for the synthesis of Non-Isocyanate Polyurethanes (NIPUs). The obtained Polyhydroxyurethanes (PHUs) have been deeply studied these last decades to offer the best solutions in the substitution of isocyanates in PUs synthesis. Strong efforts have been paid to understand key parameters for the synthesis of PHUs and to design new architectures. However, some limitations in terms of kinetics, conversion and molar masses still remain and impede PHUs expansion. Therefore, this review aims to detail the recent progress that has been made on a new strategy, the hybrid PHUs. The characteristics of additional reactants such as a high reactivity, a low viscosity or the ability to reach higher conversions can be combined with the properties of PHUs in hybrid networks. Other functional groups such as acrylates, methacrylates, epoxies, alkenes or siloxanes give access to new designs and materials with higher performances. Hence, the different strategies to perform hybrid PHUs are discussed and detailed. The main strategies employed are the co-polymerization in one-step, the synthesis of prepolymers with various architectures and the synthesis of organic/inorganic and composite PHUs. Furthermore, a short overview of reprocessable PHUs is given as another outlook for PHU development.

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Section: Development Of Phusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid polyhydroxyurethanes: How to overcome limitations and reach cutting edge properties?

Ecochard

Caillol

2020

European Polymer Journal

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“…The most widely used multi-isocyanates for the production of PU are 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 4,4-diphenylmethane diisocyanate, 1,6-hexamethyl diisocyanate, xylene diisocyanate, and isophorone diisocyanate, which are the product of a chemical reaction between gaseous phosgene with amines [75]. However, growing concern associated with the highly toxic nature of the precursors involved in the synthesis of multi-isocyanate dictates the use of an alternative eco-friendly approach [3,11]. Multi-isocyanate can be derived from vegetable oils and their derivatives, increasing the biomass content of PUs.…”

Section: Pu Foammentioning

confidence: 99%

“…In the synthesis of conventional PUs, polyols and isocyanates are usually derived from petrochemical sources. Over recent decades, growing concerns about global warming resulting from human activity, depletion of fossil resources, and fluctuating oil price has prompted debate among researchers exploring bio-based resources to replace starting chemicals with green, sustainable, and renewable sources [ 10 , 11 , 12 , 13 , 14 ]. Thus, biopolymers derived from biological and renewable sources have attracted the attention of researchers due to their sustainability, abundant availability, and eco-friendliness [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Flame Retardancy of Bio-Based Polyurethanes: Opportunities and Challenges

et al. 2020

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Sustainable polymers are emerging fast and have received much more attention in recent years compared to petro-sourced polymers. However, they inherently have low-quality properties, such as poor mechanical properties, and inadequate performance, such as high flammability. In general, two methods have been considered to tackle such drawbacks: (i) reinforcement of sustainable polymers with additives; and (ii) modification of chemical structure by architectural manipulation so as to modify polymers for advanced applications. Development and management of bio-based polyurethanes with flame-retardant properties have been at the core of attention in recent years. Bio-based polyurethanes are currently prepared from renewable, bio-based sources such as vegetable oils. They are used in a wide range of applications including coatings and foams. However, they are highly flammable, and their further development is dependent on their flame retardancy. The aim of the present review is to investigate recent advances in the development of flame-retardant bio-based polyurethanes. Chemical structures of bio-based flame-retardant polyurethanes have been studied and explained from the point of view of flame retardancy. Moreover, various strategies for improving the flame retardancy of bio-based polyurethanes as well as reactive and additive flame-retardant solutions are discussed.

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“…Sustainable resources such as biomasses can be used as a valuable and inexhaustible feedstock to produce several chemicals, as they are naturally renewable. In this context, the production of polyols from biomasses has been widely investigated worldwide in both academic institutions and industries, since they represent, along with polyisocyanates, the main components for the manufacturing of sustainable polyurethanes [ 1 , 2 , 3 , 4 , 5 ]. These polyols, obtained from biomass through fine chemical processes, represent an environmentally friendly alternative to the continuous depletion of fossil resources [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Upgrading Sustainable Polyurethane Foam Based on Greener Polyols: Succinic-Based Polyol and Mannich-Based Polyol

et al. 2020

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It is well known that the traditional synthetic polymers, such as Polyurethane foams, require raw materials that are not fully sustainable and are based on oil-feedstocks. For this reason, renewable resources such as biomass, polysaccharides and proteins are still recognized as one of the most promising approaches for substituting oil-based raw materials (mainly polyols). However, polyurethanes from renewable sources exhibit poor physical and functional performances. For this reason, the best technological solution is the production of polyurethane materials obtained through a partial replacement of the oil-based polyurethane precursors. This approach enables a good balance between the need to improve the sustainability of the polymer and the need to achieve suitable performances, to fulfill the technological requirements for specific applications. In this paper, a succinic-based polyol sample (obtained from biomass source) was synthesized, characterized and blended with cardanol-based polyol (Mannich-based polyol) to produce sustainable rigid polyurethane foams in which the oil-based polyol is totally replaced. A suitable amount of catalysts and surfactant, water as blowing reagent and poly-methylene diphenyl di-isocyanate as isocyanate source were used for the polyurethane synthesis. The resulting foams were characterized by means of infrared spectroscopy (FTIR) to control the cross-linking reactions, scanning electron microscopy (SEM) to evaluate the morphological structure and thermal gravimetric analysis (TGA) and thermal conductivity to evaluate thermal degradation behavior and thermal insulation properties.

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Bio-based routes to synthesize cyclic carbonates and polyamines precursors of non-isocyanate polyurethanes: A review

Cited by 117 publications

References 101 publications

Hybrid polyhydroxyurethanes: How to overcome limitations and reach cutting edge properties?

Hybrid polyhydroxyurethanes: How to overcome limitations and reach cutting edge properties?

Flame Retardancy of Bio-Based Polyurethanes: Opportunities and Challenges

Upgrading Sustainable Polyurethane Foam Based on Greener Polyols: Succinic-Based Polyol and Mannich-Based Polyol

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