Synthesis and characterization of sustainable polyurethane foams based on polyhydroxyls with different terminal groups

Stanzione, Mariamelia; Russo, Vincenzo; Oliviero, Maria; Verdolotti, Letizia; Sorrentino, Andrea; Serio, Martino Di; Tesser, Riccardo; Iannace, Salvatore; Lavorgna, Marino

doi:10.1016/j.polymer.2018.06.077

Cited by 41 publications

(60 citation statements)

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“…Spectra were recorded at 4 cm -1 resolution, and the reported results are the average of 64 scans. [9,17] The spectral region analyzed ranging from 1400 to 1800 cm -1 , all the spectra were background-corrected [17] and subsequently were deconvoluted with OriginPro 8.0 software by using Gauss function.…”

Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

“…The main absorption vibration peaks of polyurethane composite foams (PUG-C, PUG-W and PUG-D) and pristine PUG are listed in Table 3. All the spectra highlight the disappearance of the characteristic NCO vibration peak (around 2270 cm -1 ) associated to the isocyanate consumption inherent to the urethanic linkage formation [9,17,25]. The characteristics band features of the mainly functional groups (urethanes and urea linkages), absorbed in the spectral region 1400-1800 cm -1 , are analyzed and discussed and the main deconvoluted peaks are shown in Figure 3.…”

Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

“…The characteristics band features of the mainly functional groups (urethanes and urea linkages), absorbed in the spectral region 1400-1800 cm -1 , are analyzed and discussed and the main deconvoluted peaks are shown in Figure 3. For instance, as widely investigated [9,19,25,26] in the 1600-1800 cm -1 wavenumber region, the carbonyl vibration bands are linkages display (see the deconvoluted spectra in Figure 2) [26]. We hypothesized that, the addition of fillers resulted in the decrease of the isocyanate (NCO) available to react with the polyol (to form HS) due to the reactions that can be occurred between the OH groups of fillers with NCO creating covalent-like bonds to the PU molecular chains.…”

Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

“…Their morphology, as well as their chemical structure, can be tailored to fit specific requirements by a correct selection of the precursors. Thanks to their versatility, PUs are one of the most requested materials, used in several sectors of the industry, such as thermo-insulator for aerospace, building, automotive, shoe soles, and wood substitutes and more [9,10]. For their preparation, a polyaddition reaction between an oligomeric polyol and a diisocyanate (or polyisocyanate) mainly derived from treatment of crude oil is required [11].…”

Section: Introductionmentioning

confidence: 99%

“…These fillers were selected for their availability (wide natural availability), their chemical composition (-OH functional groups) and structure, which interact with the polyurethane matrix inducing an improving of mechanical or functional performances. [9,16,17] The effect of those fillers on the thermal, mechanical and chemico-physical properties of the produced composite foams were investigated and compared to the pristine polyurethane foam.…”

Section: Introductionmentioning

confidence: 99%

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Greener Nanocomposite Polyurethane Foam Based on Sustainable Polyol and Natural Fillers: Investigation of Chemico-Physical and Mechanical Properties

Bossa¹,

Santillo²,

Verdolotti³

et al. 2019

Preprint

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Nowadays, the chemical industry is looking for sustainable chemicals to synthesize nanocomposite bio-based polyurethane foams, PUs, with the aim to replace the conventional petrochemical precursors. Some possibilities to increase the environmental sustainability in the synthesis of nanocomposite PUs include the use of chemicals and additives derived from renewable sources (such as vegetable oils or biomass wastes) which comprise an increasing wider base raw materials. Generally, sustainable PUs exhibit chemico-physical, mechanical and functional properties which are not comparable with those of PUs produced from petrochemical precursors. In order to enhance the performances as well as the bio-based aspect, the addition in the polyurethane formulation of renewable or natural fillers can be considered. Among these, walnut shells and cellulose are very popular wood-based waste and due to their chemical composition, carbohydrate, protein and/or fatty acid, can be used as reactive fillers in the synthesis of PUs, diatomite as natural inorganic nanoporous filler can be also evaluated to improve mechanical and thermal insulation properties of rigid PUs. In this respect, sustainable nanocomposite rigid PU foams are synthesized by using a cardanol-based Mannich polyol, MDI as isocyanate source, catalysts and surfactant to regulate the polymerization and blowing reactions, H2O as sustainable blowing agent and suitable amount (5wt%) of ultramilled walnut shell, cellulose and diatomite as filler. The effect of these fillers on the chemico-physical, morphological, mechanical and functional performances on PU foams has been analyzed.

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Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Greener Nanocomposite Polyurethane Foam Based on Sustainable Polyol and Natural Fillers: Investigation of Chemico-Physical and Mechanical Properties

Bossa¹,

Santillo²,

Verdolotti³

et al. 2019

Preprint

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Polyurethanes

Brereton

Emanuel

Lomax

et al. 2019

Ullmann's Encyclopedia of Industrial Chemistry

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Design and Development of Sustainable Polyurethane Foam: A Proof‐of‐Concept as Customizable Packaging for Cultural Heritage Applications

Pascarella,

Recupido,

Lama

et al. 2024

Adv Eng Mater

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World cultural heritage is an invaluable resource and must be preserved. Conventional packaging materials, such as polystyrene‐PS, polyurethane (PU) foams, paper‐like tissue, and nylon fabric, are petrol‐based. According to Agenda 2030, and Green Deal directives, the development of alternative bio‐based materials has gained significant scientific and technological relevance. In this scenario, a new sustainable packaging material for safe storage and transporting of the artifacts, based on a sustainable PU foam filled with 6 wt.% of Zeolite 4A, is herein proposed. Zeolite 4A dispersion into PU matrix imparts higher compression strength and energy absorption capability with respect to unloaded materials (7‐fold increase), owing to its remarkable cell nucleating effect. The proposed foam can adsorb water vapor, up to 29 wt.%, thus contributing to regulating the humidity around the artifact. A remarkable advantage of the developed foam is the possibility to use it as plaster for precisely casting the article to protect, resulting in strongly improved handling, protection, and transportation safety with respect to conventional packaging solutions. A proof‐of‐concept workflow is proposed, consisting of: i) 3D scanning of the original artifact, ii) its replication through 3D printing, iii) the use of such replica to prepare a tailored cast of the artifact shape.This article is protected by copyright. All rights reserved.

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Synthesis and characterization of sustainable polyurethane foams based on polyhydroxyls with different terminal groups

Cited by 41 publications

References 42 publications

Greener Nanocomposite Polyurethane Foam Based on Sustainable Polyol and Natural Fillers: Investigation of Chemico-Physical and Mechanical Properties

Greener Nanocomposite Polyurethane Foam Based on Sustainable Polyol and Natural Fillers: Investigation of Chemico-Physical and Mechanical Properties

Polyurethanes

Design and Development of Sustainable Polyurethane Foam: A Proof‐of‐Concept as Customizable Packaging for Cultural Heritage Applications

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