Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal
Stability and Flame Retardancy of Cotton

J 2019

Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal Stability and Flame Retardancy of Cotton

BARBALINI, M., L. BERTOLLA, Jaromír TOUŠEK a G. MALUCELLI

Základní údaje

Originální název

Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal Stability and Flame Retardancy of Cotton

Autoři

BARBALINI, M., L. BERTOLLA, Jaromír TOUŠEK (203 Česká republika, garant, domácí) a G. MALUCELLI

Vydání

POLYMERS, Švýcarsko, MDPI, 2019, 2073-4360

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10404 Polymer science

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.426

Kód RIV

RIV/00216224:14740/19:00113290

Organizační jednotka

Středoevropský technologický institut

DOI

http://dx.doi.org/10.3390/polym11101664

UT WoS

000495382700133

Klíčová slova anglicky

sol-gel processes; flame retardancy; cotton; phytic acid; solid state NMR spectroscopy; thermal stability; durability

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 30. 10. 2024 14:12, Ing. Martina Blahová

Anotace

V originále

New hybrid sol-gel coatings based on tetraethoxysilane (TEOS) and phytic acid (PA) were designed and applied to cotton; the flame-retardant properties of the treated fabrics were thoroughly investigated by means of flame-spread and forced-combustion tests. The first goal was to identify the TEOS:PA weight ratio that allowed the achievement of the best flame-retardant properties, with the lowest final dry add-on on the fabrics. Therefore, different TEOS:PA sols were prepared and applied to cotton, and the resulting coated fabrics were thoroughly investigated. In particular, solid-state NMR spectroscopy was exploited for assessing the condensation degree during the sol-gel process, even for evaluating the occurrence of possible reactions between phytic acid and the cellulosic substrate or the alkoxy precursor. It was found that a total dry add-on of 16 wt % together with 70:30 TEOS:PA weight ratio provided cotton with self-extinction, as clearly indicated by flame-spread tests. This formulation was further investigated in forced-combustion tests: a significant reduction of heat release rate (HRR), of the peak of HRR, and of total heat release (THR) was found, together with a remarkable increase of the residues after the test. Unfortunately, the treated fabrics were not resistant to washing cycles, as they significantly lost their flame-retardant properties, consequently to the partial removal of the deposited hybrid coatings.

Návaznosti

90043, velká výzkumná infrastruktura

Název: CIISB

Citovat

BARBALINI, M., L. BERTOLLA, Jaromír TOUŠEK a G. MALUCELLI. Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal Stability and Flame Retardancy of Cotton. POLYMERS. Švýcarsko: MDPI, 2019, roč. 11, č. 10, s. 1-22. ISSN 2073-4360. Dostupné z: https://dx.doi.org/10.3390/polym11101664.

@article{1636923,
   author = {Barbalini, M. and Bertolla, L. and Toušek, Jaromír and Malucelli, G.},
   article_location = {Švýcarsko},
   article_number = {10},
   doi = {http://dx.doi.org/10.3390/polym11101664},
   keywords = {sol-gel processes; flame retardancy; cotton; phytic acid; solid state NMR spectroscopy; thermal stability; durability},
   language = {eng},
   issn = {2073-4360},
   journal = {POLYMERS},
   title = {Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal Stability and Flame Retardancy of Cotton},
   url = {https://www.mdpi.com/2073-4360/11/10/1664/htm},
   volume = {11},
   year = {2019}
}

TY  - JOUR
ID  - 1636923
AU  - Barbalini, M. - Bertolla, L. - Toušek, Jaromír - Malucelli, G.
PY  - 2019
TI  - Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal Stability and Flame Retardancy of Cotton
JF  - POLYMERS
VL  - 11
IS  - 10
SP  - 1-22
EP  - 1-22
PB  - MDPI
SN  - 20734360
KW  - sol-gel processes
KW  - flame retardancy
KW  - cotton
KW  - phytic acid
KW  - solid state NMR spectroscopy
KW  - thermal stability
KW  - durability
UR  - https://www.mdpi.com/2073-4360/11/10/1664/htm
L2  - https://www.mdpi.com/2073-4360/11/10/1664/htm
N2  - New hybrid sol-gel coatings based on tetraethoxysilane (TEOS) and phytic acid (PA) were designed and applied to cotton; the flame-retardant properties of the treated fabrics were thoroughly investigated by means of flame-spread and forced-combustion tests. The first goal was to identify the TEOS:PA weight ratio that allowed the achievement of the best flame-retardant properties, with the lowest final dry add-on on the fabrics. Therefore, different TEOS:PA sols were prepared and applied to cotton, and the resulting coated fabrics were thoroughly investigated. In particular, solid-state NMR spectroscopy was exploited for assessing the condensation degree during the sol-gel process, even for evaluating the occurrence of possible reactions between phytic acid and the cellulosic substrate or the alkoxy precursor. It was found that a total dry add-on of 16 wt % together with 70:30 TEOS:PA weight ratio provided cotton with self-extinction, as clearly indicated by flame-spread tests. This formulation was further investigated in forced-combustion tests: a significant reduction of heat release rate (HRR), of the peak of HRR, and of total heat release (THR) was found, together with a remarkable increase of the residues after the test. Unfortunately, the treated fabrics were not resistant to washing cycles, as they significantly lost their flame-retardant properties, consequently to the partial removal of the deposited hybrid coatings.
ER  -

BARBALINI, M., L. BERTOLLA, Jaromír TOUŠEK a G. MALUCELLI. Hybrid Silica-Phytic Acid Coatings: Effect on the Thermal Stability and Flame Retardancy of Cotton. \textit{POLYMERS}. Švýcarsko: MDPI, 2019, roč.~11, č.~10, s.~1-22. ISSN~2073-4360. Dostupné z: https://dx.doi.org/10.3390/polym11101664.

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