Improving the structural and physical properties of boric acid-doped rigid polyurethane materials

Kirbaş, İbrahim

doi:10.1177/26349833211010819

Cited by 4 publications

(4 citation statements)

References 28 publications

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“…The introduction of heteroatoms to the bio-polyol molecule (such as boron) is important in reducing the flammability of polyurethane materials based on these bio-polyols. The increase in the content of such elements often results in a decrease in flammability and a decrease in the emission of toxic smoke generated during the combustion of these materials [44,45].…”

Section: Analytical Tests Of Bio-polyolsmentioning

confidence: 99%

Comparing the Properties of Bio-Polyols Based on White Mustard (Sinapis alba) Oil Containing Boron and Sulfur Atoms Obtained by Various Methods and Checking Their Influence on the Flammability of Rigid Polyurethane/Polyisocyanurate Foams

et al. 2023

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The article compares the properties of bio-polyols obtained from white mustard (Sinapis alba) seed oil, which contain boron and sulfur atoms. Each of the bio-polyols was prepared by a different method of testing the efficiency of the incorporation of boron and sulfur atoms. All synthesis methods were based on the epoxidation of unsaturated bonds followed by the opening of epoxy rings by compounds containing heteroatoms. Two of the bio-polyols were subjected to additional esterification reactions of hydroxyl groups with boric acid or its ester. Three new bio-polyols were obtained as a result of the performed syntheses. The synthesized compounds were subjected to detailed physicochemical (physical state, color, smell, density, viscosity and pH), analytical (hydroxyl number, acid number, water content, content of C, H, N, S, O, B elements and GPC analysis), spectroscopic (FTIR, 1H NMR and 13C NMR) and thermal (DSC) tests. The obtained results allowed for a detailed characterization of the synthesized bio-polyol raw materials. Their suitability for obtaining polyurethane materials was also determined. The synthesized compounds have been found to be an interesting alternative to petrochemical polyols. The influence of the synthesized compounds on the flammability of polyurethane materials was tested experimentally. On the basis of this testing, a number of rigid polyurethane/polyisocyanurate foams were obtained, which were then subjected to flammability tests with the methods of horizontal and vertical burning, limiting oxygen index (LOI) and using the cone calorimeter. Based on this research, it was found that the presence of sulfur and boron heteroatoms reduced the flammability of polyurethane materials based on synthesized bio-polyols.

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Section: Analytical Tests Of Bio-polyolsmentioning

confidence: 99%

Comparing the Properties of Bio-Polyols Based on White Mustard (Sinapis alba) Oil Containing Boron and Sulfur Atoms Obtained by Various Methods and Checking Their Influence on the Flammability of Rigid Polyurethane/Polyisocyanurate Foams

et al. 2023

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“…Selain itu, terlihat serapan pada bilangan gelombang 544 dan 525 cm 1 sebagai tanda adanya deformasi simetrik dari alkil borat. Serapan pada rentang bilangan gelombang 700-1000 cm 1 merupakan lekukan B-O-H dan pada 3000-3300 cm 1 diberikan oleh sretching O-H (Aryani & Widyantara, 2018;Kırbaş, 2021;Septiani & Roswien, 2018).…”

Section: Spektrometri Infra Red (Ir)unclassified

Review: Berbagai Metode Analisis Kualitatif Dan Kuantitatif Boraks Dalam Sampel Makanan

Suharyani,

Rohadi,

Kunaedi

et al. 2022

J. of Pharm.

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Borax (sodium tetraborate) is one of food additive that has been prohibited to use as a preservative. The use of borax in some food will cause the side effects on the body like a damage to the central nervous system, liver, and urinary system. Borax is often misused in foods such as meatballs, tofu, crackers and rice cakes. Various studies have been conducted to detect the presence of borax in food samples with different types. Based on the results of the journal search, the qualitative analysis method of borax can be carried out with the flame test, Turmeric Paper Method, color reaction with purple sweet potato filtrate and FTIR spectrophotometry. The most widely used method is the Turmeric Paper Method, which detects samples in various samples of meat and their products, tofu, crackers, noodles and rice cake. Meanwhile, the quantitative analysis performed only found two methods, namely alkalimetric titration using sodium hydroxide and UV-Vis spectrophotometry.

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“…In their study, it was stated that borax in particular has the potential to be used as a flame retardant in wood plastic composites. Kırbas et al [13] examined the microstructure and physical properties of BA filled rigid polyurethane (PU). In their study, 5 wt.%, 10 wt.% and 15 wt.% BA was added to PU polymer material by weight.…”

Section: Introductionmentioning

confidence: 99%

Determination of mechanical performance of boric acid filled polypropylene based polymer composites

ÜNAL,

YETGİN,

KÖSE

2023

JSR-A

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Polypropylene (PP) polymer, which is one of the indispensable materials of our daily life and stands out with its lightness, low cost and chemical resistance properties in the industry, was used. In industrial applications where the properties of polymers without additives are not sufficient, composite materials are produced by adding some additives to the polymer. In this experimental study, the mechanical properties of composites produced by adding boric acid (BA) to PP polymer at 5 wt.% (PP/5BA), 10 wt.% (PP/10BA) and 15 wt.% (PP/15BA) ratios were investigated. the effect of both BA filler and optimum BA filler ratio on mechanical properties were investigated. In the production of PP/BA composites, granules were first produced in an industrial twin screw extruder. Then, PP/BA composite tensile and impact test specimens were moulded on a conventional injection moulding machine. As a result, it was observed that the tensile modulus, tensile and yield strength of the composite materials decreased with increasing boric acid filler content in PP polymer. Depending on the boric acid filler content, the tensile strength decreased by an average of 18.3% and the breaking strength decreased by 14.8%. The lowest tensile modulus was obtained with a value of 2713 MPa at 10wt.% boric acid filler addition. The impact strength increased slightly at 5 wt.% boric acid filler addition and decreased at 10wt.% and 15wt.% boric acid filler addition.

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Improving the structural and physical properties of boric acid-doped rigid polyurethane materials

Cited by 4 publications

References 28 publications

Comparing the Properties of Bio-Polyols Based on White Mustard (Sinapis alba) Oil Containing Boron and Sulfur Atoms Obtained by Various Methods and Checking Their Influence on the Flammability of Rigid Polyurethane/Polyisocyanurate Foams

Comparing the Properties of Bio-Polyols Based on White Mustard (Sinapis alba) Oil Containing Boron and Sulfur Atoms Obtained by Various Methods and Checking Their Influence on the Flammability of Rigid Polyurethane/Polyisocyanurate Foams

Review: Berbagai Metode Analisis Kualitatif Dan Kuantitatif Boraks Dalam Sampel Makanan

Determination of mechanical performance of boric acid filled polypropylene based polymer composites

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