Glycolyzed poly(ethylene terephthalate) waste and castor oil-based polyols for waterborne polyurethane adhesives containing hexamethoxymethyl melamine

Cakić, Suzana; Ristić, Ivan; Marinović‐Cincović, Milena; Stojiljković, Dragan T.; János, Csanádi J.; Cvetinov, Miroslav; Stamenkovic, Jakov

doi:10.1016/j.porgcoat.2014.07.012

Cited by 47 publications

(22 citation statements)

References 29 publications

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“…This was achieved by the chemical modification of the polyols used in synthesis. These results agree with those reported by Cakić et al 39 , who synthesized PU-based adhesives from polyols derived from castor oil with residues of polyethylene terephthalate. The authors attributed the increase in hardness to the cross-link density achieved by modifying the polyols by glycosylation of the castor oil, which generated an increase in the stiffness of the main chain.…”

Section: Mechanical and Adhesive Propertiessupporting

confidence: 93%

Polyurethane-based bioadhesive synthesized from polyols derived from castor oil (Ricinus communis) and low concentration of chitosan

et al. 2017

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Section: Mechanical and Adhesive Propertiessupporting

confidence: 93%

Polyurethane-based bioadhesive synthesized from polyols derived from castor oil (Ricinus communis) and low concentration of chitosan

et al. 2017

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“…13 . Amiza obtained approximately 40% MAG and 50% DAG from the transesterification of palm oil employing 0.5 KOH as catalyst 14 In this study, except for run 1, the conditions led to a good conversion reaction, higher than 90%, considering the sum of MS-and DS-DEG determined by GPC. Also, run 8, with a high molar ratio and 175°C, gave approximately 87% yield only in MS-DEG.…”

Section: Resultsmentioning

confidence: 53%

“…Valero used PbO and pentraerythritol to prepare diols, and synthesized a network polymer 13 . To increase the thermal stability of polyurethanes, Cakić was reacted castor oil with the product of the glycolysis of PET, introducing aromayic unities to the polyol 14 .…”

Section: Introductionmentioning

confidence: 99%

Application of Taguchi design to produce polyols based on castor oil derivatives with diethylene glycol

Silva¹,

Ramos²,

Zawadzki³

et al. 2015

Mediterr.J.Chem

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Castor oil (CO) is one of the most valuable oils, because of its characteristics and potential use in synthesis. A simple way to modify the castor oil structure is the transesterification reaction with an alcohol. Through this reaction, a renewable polyol could be produced and applied in the polyurethane industry. In this study, the transesterification was done by KOH catalysis following a Taguchi experimental design. The chosen alcohol was diethylene glycol (DEG) and the product components were estimated by GPC. This chromatographic technique allowed establishment of the most favorable conditions to produce monosubstituted DEG or disubstituted DEG. In the conditions suggested by the Taguchi design, the condition that favors monosubstituted DEG is 9:1 DEG:CO molar ratios, 200°C for 4 h and 0.5% KOH. This condition leads to approximately 75% monosubstituted DEG and 11% disubstituted DEG in a mixture with the remaining acylglycerols. The hydroxyl value of this product is 407, a high value for a product with a relatively low molecular weight. These characteristics suggest that it can be used as a polyol for polyurethanes.

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“…The combination of recycled and renewable (oleochemical) polyols used in the preparation of new PUR has not frequently been mentioned in the literature. The mixture of recycled polyols from the glycolysis of PET waste and castor oil was tested for the preparation of PUR insulating coatings [9], waterborne PUR adhesives [10] and flame retardant rigid PUR foams [11]. In our last study, recycled polyols based on castor oil and fish oil were used in the preparation of flexible cast PUR and high density rigid PUR foams, respectively [12].…”

Section: Pianki Poliuretanowe Wytworzone Na Bazie Recyklowanych Poliomentioning

confidence: 99%

Polyurethane foams based entirely on recycled polyols derived from natural oils

Horák

Beneš

2015

Polimery

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Flexible polyurethane (PUR) foam was chemically recycled using two types of oleochemical polyols based on rapeseed oil and waste fish oil. The functional hydroxyl groups of the oleochemical polyols reacted with the urethane and the disubstituted urea structures of flexible PUR foam at temperatures around 200°C. The liquid recycled polyols with hydroxyl numbers ca. 175 mg KOH/g were obtained after 2 h of the reaction. Only the recycled polyols without additional virgin polyols were used for the preparation of low density PUR foams. PUR foams with free rise density of 30 and 50 kg/m 3 were prepared exhibiting semi-rigid character due to the presence of soft segments of fatty acid chains.

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Glycolyzed poly(ethylene terephthalate) waste and castor oil-based polyols for waterborne polyurethane adhesives containing hexamethoxymethyl melamine

Cited by 47 publications

References 29 publications

Polyurethane-based bioadhesive synthesized from polyols derived from castor oil (Ricinus communis) and low concentration of chitosan

Polyurethane-based bioadhesive synthesized from polyols derived from castor oil (Ricinus communis) and low concentration of chitosan

Application of Taguchi design to produce polyols based on castor oil derivatives with diethylene glycol

Polyurethane foams based entirely on recycled polyols derived from natural oils

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