Urethane foams from animal fats I. Oxyethylated 9, 10‐dihydroxystearic acid

Saggese, E. J.; Zubillaga, M. P.; Wrigley, A. N.; Ault, W. C.

doi:10.1007/bf02540102

Cited by 17 publications

(7 citation statements)

References 4 publications

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“…14 Casting resins and PUR foams synthesized from vegetable oils have been in existence for some time. [15][16][17][18][19][20] Technologies to produce polyols from palm oil and palm kernel oil that are economically competitive to petroleum-based polyols have been developed in Malaysia. [21][22][23][24][25][26][27][28] These polyols are then reacted with polyisocyanate to produce PUR.…”

Section: Introductionmentioning

confidence: 99%

The physical and mechanical properties of polyurethanes from oleic acid polyols

Velayutham

Majid

Ahmad

et al. 2009

J of Applied Polymer Sci

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Three different polyester polyols, with various oleic acid content, were used in the preparation of polyurethane (PUR) coatings. The polyols were designated as Alk28, Alk40, and Alk65, in which 28, 40, and 65 represent the percentage of oleic acid of the polyol formulations. These polyester polyols were reacted with aromatic diisocyanate [toluene diisocyanate (TDI)] to form PUR coatings. The acid value, hydroxyl value, molecular weight, and viscosity of the polyols have been determined. The reaction between the polyols and TDI was studied by Fourier Transform Infrared spectroscopy and X-ray diffraction (XRD).The effects of varying NCO/OH ratio and oleic acid content of polyols on physical and mechanical properties of PUR films were studied. XRD results indicate that the samples are amorphous. PURs, made with Alk28, have the best mechanical properties followed by Alk40 and Alk65. The mechanical properties of the samples have increased as the NCO/OH ratio was increased from 1.2 to 1.6.

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Section: Introductionmentioning

confidence: 99%

The physical and mechanical properties of polyurethanes from oleic acid polyols

Velayutham

Majid

Ahmad

et al. 2009

J of Applied Polymer Sci

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“…In general, the present fat-based polyols, both unbrominated and brominated, gave foams of better quality than those from HET and HBT, and on a par with those made from alkoxylated dihydroxystearic acids (7,8). The polyols responded well to blending with adjuvants, providing foam properties at equivalent wt 120 only a little inferior to those at 100.…”

Section: Discussionmentioning

confidence: 72%

Urethane foams from animal fats: VIII. Properties of foams from epoxidized tallow trimethylolpropane polyols

Saggese

Zubillaga

Bilyk

et al. 1974

J Americ Oil Chem Soc

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Polyols made by reacting trimethylolpropane with epoxidized tallow were converted to urethane foams by reaction with a polymethylene polyphenylisocyanate in the presence of fluorotrichioromethane. Adjusted with triisopropanolamine or an oxypropylated triamine to hydroxyl equivalent of either 100 or 120, the polyols yielded rigid foams of density 1.5-2.0 lb/ft 3, open cell content 15-19%, and compressive strength 34-49 psi. These values were superior to those of similar foams from hydrated epoxidized tallow. Polyols made from epoxidized tallow-trimethylolpropane-HBr and adjusted to equivalent wt of 100 and 120 by triisopropanolamine gave foams whose small-scale flammability test samples burned less than 20% of their length. At hydroxyl equivalent 100, foams had density 1.6-1.8, open cell content 20-21%, and compressive strength 34-39 psi; in flammability tests burned <20% of length. The present foams were stronger than those made earlier from solvent-purified hydroxybrominated tallow. Formulation with half the normal amount of freon gave foams of higher compressive strength but lower flame resistance.

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“…To overcome these problems the isophorone diisocyanates used as industrial coating. 1,2,3 Soyabean oil is composed of triglycerides of long chain fatty acids. The most common chain lengths in these fatty acids are 18 (or) 20 carbon atoms which can be saturated (or) unsaturated, where unsaturation of the double bonds are located at 9,12 and 15 carbon.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Studies on Novel Biodegradable Polyurethane Thin Films from Soyabean oil

Ginju

David

2019

Orient. J. Chem

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Polyurethane thin film was synthesised from soyabean oil, ethylene glycol, 30% hydrogen peroxide and isophorone diisocyanate by stepwise polymerisation technique. The biodegradability of the polyurethane film was studied by soil burial test .The chemical resistance of the polyurethane was analysed with different solvents. The polyurethane thin film was characterised with respect to their mechanical properties such as hardness, tensile strength, percentage elongation and young’s modulus. These studies revealed that the rigid polyurethane possess good tensile strength and biodegradability. The exothermic and endothermic nature of the polymer showed that the polyurethane was thermally stable. The physical properties such as acid value, saponification value, epoxy value, viscosity and hydroxyl values calculated. The FTIR and NMR spectral studies carried out to identify the nature of the polymer formed. Sem analysis confirmed that the polymer was biodegradable in nature. The shore hardness of the thin film was measured with the help of durometer. The tensile strength increases with increase in concentration. The young’s modulus of the thin film was calculated from the tensile strength analysis. The elasticity of the thin film was also measured by using tensile strength measurement. The swelling parameters were studied with polar and organic solvents. The thermal degradation at different time intervals were analysed by TG-DTA analysis.

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Urethane foams from animal fats I. Oxyethylated 9, 10‐dihydroxystearic acid

Cited by 17 publications

References 4 publications

The physical and mechanical properties of polyurethanes from oleic acid polyols

The physical and mechanical properties of polyurethanes from oleic acid polyols

Urethane foams from animal fats: VIII. Properties of foams from epoxidized tallow trimethylolpropane polyols

Characteristic Studies on Novel Biodegradable Polyurethane Thin Films from Soyabean oil

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