Caseins and hydrophobins as novel green flame retardants for cotton fabrics

Alongi, Jenny; Carletto, Riccardo Andrea; Bosco, Francesca; Carosio, Federico; Blasio, Alessandro Di; Cuttica, Fabio; Antonucci, Vincenza; Giordano, M.; Malucelli, Giulio

doi:10.1016/j.polymdegradstab.2013.11.016

Cited by 222 publications

(126 citation statements)

References 18 publications

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“…Furthermore, visible changes are observed for the sample kaz 2 in temperature interval from 55-220 °C due to the gradual softening of casein followed by its decomposition in area from 220-450 °C. Above 400 °C, no significant decomposition of samples is observed, revealing the end of the thermal degradation [29][30][31][32] . For all studied samples, the obtained biochar (about 10 -20 %) is a compact solid material with highly developed porosity structure, and the investigation of its properties will be investigated in other studies.…”

Section: Thermogravimetric Analysismentioning

confidence: 97%

Characterization of Casein Fractions – Comparison of Commercial Casein and Casein Extracted from Cow’s Milk

Siročić

Krehula

Katančić

et al. 2017

Chem.Biochem.Eng.Q.

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Biopolymer casein was isolated from cow's milk by acid coagulation, which was initiated by acetic acid and sodium acetate in the first, and hydrochloric acid in the second process. The casein isolated by acid coagulation, i.e. by first process, and commercial casein were separated on α-, β-, (α+κ)-and κ casein by urea fractionation. The aim of this study was to compare various properties of commercial casein fractions with casein fractions isolated from cow's milk. The structure of casein and casein fraction samples were monitored by Fourier transform infrared spectroscopy (FTIR), and the obtained vibrational bands showed structural differences between isolated and commercial casein (presence of various amino acids), as well as their fractions. Differential scanning calorimetry (DSC) was used to determine glass transition temperature. The results showed that the glass transitions of the isolated and commercial casein were below room temperature (T g = 2-30 °C) due to the destruction of the samples structure that provides molecules mobility and leads to a phase transition. Thermal degradation obtained by thermogravimetric analysis (TGA) of all samples occurred in multiple steps. From the results, it is evident that 5 mass % of the each sample degraded at significantly different temperatures (T 95 ), and it can be concluded that isolated casein and its fractions showed better heat stability than commercial casein and its fraction.

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Section: Thermogravimetric Analysismentioning

confidence: 97%

Characterization of Casein Fractions – Comparison of Commercial Casein and Casein Extracted from Cow’s Milk

Siročić

Krehula

Katančić

et al. 2017

Chem.Biochem.Eng.Q.

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“…A good overview of these attempts can be found in the review of Auvergne et al 1 Various fractions of the biomass are likely to be utilized to prepare epoxy monomers or hardeners: the carbohydrate fraction (starch, 2 sugar 3 ), the lipid fraction (vegetable oils, 4 terpene 5 ), or the phenolic fraction (polyphenol, tannins, 6 vanillin 7 ). 15 (iv) Phenolic fraction: several studies mentioned the use of lignin to improve re properties of thermoplastic polymers. 8 Concomitantly to bio-based polymers, the development of green additives for polymers has become a great challenge in the recent period.…”

Section: Introductionmentioning

confidence: 99%

From a bio-based phosphorus-containing epoxy monomer to fully bio-based flame-retardant thermosets

et al. 2015

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In this work, phloroglucinol was used as a renewable resource to prepare an epoxy monomer and phosphorus containing reactive flame retardant (FR). These building blocks were reacted with diamines to obtain partly or fully bio-based flame retardant epoxy resins. It was highlighted that the glass transition temperature of the materials was tightly related to the functionality of the reactive monomers and the resulting crosslink density. Thermal stability and char yield of the thermosets seems to be mainly governed by the aromaticity of the monomers, the linking rate of the aromatic ring and the phosphorus content. Phosphorus FR are more efficient in intrinsically poorly charring matrices. It was evidenced that the flammability of bio-based epoxies can be monitored by two strategies: (i) choosing bio-based monomers with high charring ability and low combustion energy, (ii) incorporating bio-based phosphorus-containing reactive FR in the polymer network.

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“…Ignition of household textiles is one of the most common fire reasons for the residential home fires [1]. Both industrial and academic researchers have taken interest in designing and developing chemicals to prevent the combustion of polymers or to delay the spread of fire after ignition [2].…”

Section: Introductionmentioning

confidence: 99%

Effect of manganese and cobalt ions on flame retardancy and thermal degradation of bio-based alginate films

et al. 2015

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Bio-based cobalt alginate and manganese alginate films were prepared by a facile ionic exchange and casting approach. Their flame retardancy, thermal degradation, and pyrolysis properties were investigated by vertical burning (UL-94), limiting oxygen index (LOI), thermogravimetric analysis, microscale combustion calorimetry (MCC), thermogravimetric analyzer coupled with Fourier transform infrared analysis (TG-FTIR), and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). It showed that cobalt alginate film had much higher LOI value (45.0 %) than those of manganese alginate film (30.7 %) and sodium alginate film (24.5 %). Moreover, cobalt alginate film passed UL-94 V-0 rating, while manganese alginate and sodium alginate films showed no rating. Importantly, peak of heat release rate of cobalt alginate and manganese alginate in MCC test was much lower than that of sodium alginate, suggesting that the addition of cobalt ion and manganese ion decreases the release of combustible gases. TG-FTIR and Py-GC-MS results indicated that cobalt alginate and manganese alginate produced much less gaseous products than that of sodium alginate. Finally, a possible thermal degradation mechanism of cobalt alginate and manganese alginate had been proposed. The results provided useful information for understanding flame-retardant mechanism of alginate as well as for designing bio-based materials with excellent fire-retardant properties.

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Caseins and hydrophobins as novel green flame retardants for cotton fabrics

Cited by 222 publications

References 18 publications

Characterization of Casein Fractions – Comparison of Commercial Casein and Casein Extracted from Cow’s Milk

Characterization of Casein Fractions – Comparison of Commercial Casein and Casein Extracted from Cow’s Milk

From a bio-based phosphorus-containing epoxy monomer to fully bio-based flame-retardant thermosets

Effect of manganese and cobalt ions on flame retardancy and thermal degradation of bio-based alginate films

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