Preparation and characterization of polyurethane plasticizer for flexible packaging applications: Natural oils affirmed access

Mekewi, Mohamed A.; Ramadan, Ahmed M.; ElDarse, Farida M.; Rehim, Mona H. Abdel; Mosa, Nabawea A.; Ibrahim, Mona E.

doi:10.1016/j.ejpe.2016.02.002

Cited by 47 publications

(19 citation statements)

References 26 publications

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“…Chemical structures were evaluated by an ATR-FTIR spectrometer (Bruker Alpha, Billerica, MA, USA), in the range from 400 to 4000 cm −1 . The spectrum corresponds to the average of 24 scans at a spectral resolution of 4 cm −1 [40,77].…”

Section: Methodsmentioning

confidence: 99%

Candidate Polyurethanes Based on Castor Oil (Ricinus communis), with Polycaprolactone Diol and Chitosan Additions, for Use in Biomedical Applications

et al. 2019

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Polyurethanes are widely used in the development of medical devices due to their biocompatibility, degradability, non-toxicity and chemical versatility. Polyurethanes were obtained from polyols derived from castor oil, and isophorone diisocyanate, with the incorporation of polycaprolactone-diol (15% w/w) and chitosan (3% w/w). The objective of this research was to evaluate the effect of the type of polyol and the incorporation of polycaprolactone-diol and chitosan on the mechanical and biological properties of the polyurethanes to identify the optimal ones for applications such as wound dressings or tissue engineering. Polyurethanes were characterized by stress-strain, contact angle by sessile drop method, thermogravimetric analysis, differential scanning calorimetry, water uptake and in vitro degradation by enzymatic processes. In vitro biological properties were evaluated by a 24 h cytotoxicity test using the colorimetric assay MTT and the LIVE/DEAD kit with cell line L-929 (mouse embryonic fibroblasts). In vitro evaluation of the possible inflammatory effect of polyurethane-based materials was evaluated by means of the expression of anti-inflammatory and proinflammatory cytokines expressed in a cellular model such as THP-1 cells by means of the MILLIPLEX® MAP kit. The modification of polyols derived from castor oil increases the mechanical properties of interest for a wide range of applications. The polyurethanes evaluated did not generate a cytotoxic effect on the evaluated cell line. The assessed polyurethanes are suggested as possible candidate biomaterials for wound dressings due to their improved mechanical properties and biocompatibility.

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Section: Methodsmentioning

confidence: 99%

Candidate Polyurethanes Based on Castor Oil (Ricinus communis), with Polycaprolactone Diol and Chitosan Additions, for Use in Biomedical Applications

et al. 2019

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“…Others oils, e.g., olive oil, have a lower content of reactive groups, and obtained polyurethane foams can be more flexible [11]. The properties of the obtained polyurethane material can be controlled by selecting appropriate raw materials [12,13,14,15,16,17,18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Evening Primrose Oil-Based Polyol on the Properties of Rigid Polyurethane–Polyisocyanurate Foams for Thermal Insulation

et al. 2018

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The article presents the results of research on the synthesis of a new biopolyol based on evening primrose oil, and its use in the production of rigid polyurethane–polyisocyanurate foams intended for thermal insulation. The obtained biopolyol was subjected to analytical, physicochemical, and spectroscopic tests (Fourier transform infrared (FTIR), 1H NMR, 13C NMR) to confirm its suitability for the synthesis of polyurethane materials. Then, it was used for the partial replacement of the petrochemical polyol in the polyurethane formulation. Obtained rigid polyurethane–polyisocyanurate foams are characterized by a lower apparent density, brittleness, water absorption, and thermal conductivity coefficient λ. In addition, foams modified by biopolyols had a higher content of closed cells and higher aging resistance. The results of the conducted research showed that the use of the biopolyol based on evening primrose oil may be an alternative to petrochemical polyols. The research presented herein is perfectly consistent with the trends of sustainable development and the philosophy of green chemistry.

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“…MO presents a high nutritional importance due to the presence of important nutrients and antinutrients: minerals, vitamins, tannins, fibers and fatty acids [20,21] . The seed of M. oleifera is composed by 38% in mass of fatty acids like oleic acid (63.4%), linoleic acid (3.1%), palmitic acid (8.4%) and stearic acid (8%) [18,22,23] . Oleic acid fatty has high stability due to its low unsaturation and this fact favors the polymerization process [24] .…”

Section: Introductionmentioning

confidence: 99%

“…Polymerization under microwaves irradiation is becoming common for synthesis of polyesters, biodegradable polymers and open ring [27,30] . According to literature, the kinetics of reactions using microwaves is better than the conventional heating [17,23,31] .…”

Section: Introductionmentioning

confidence: 99%

Influence of Moringa oleifera derivates in blends of PBAT/PLA with LDPE

et al. 2018

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There are few studies about Moringa oleifera derivates in polymer developments where vegetable oil was used as a plasticizer and a biodegrading agent. The polymerization of moringa oil (MO) was carried out assisted by microwaves without catalysts presence. There aren't studies about the polymerization of MO using microwaves technology. Moringa's oil and its polymer (PMO) were used as a biodegrading agent for mixtures of low density polyethylene (LDPE) with poly(butylene adipate-co-terephthalate)/poly(lactic acid) (PBAT/PLA). The mixtures producted films that were characterized and submitted to biodegradation analysis in order to discuss the influence of moringa components. Results showed that both moringa components improved thermal properties and reduced the crystalline phase of the mixture. The addition of PMO had improved the biodegradation capacity up to five times while MO had improved it up to three times. The results showed the greatest influence of moringa components on biodegradation of mixtures with cited polymers.

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Preparation and characterization of polyurethane plasticizer for flexible packaging applications: Natural oils affirmed access

Cited by 47 publications

References 26 publications

Candidate Polyurethanes Based on Castor Oil (Ricinus communis), with Polycaprolactone Diol and Chitosan Additions, for Use in Biomedical Applications

Candidate Polyurethanes Based on Castor Oil (Ricinus communis), with Polycaprolactone Diol and Chitosan Additions, for Use in Biomedical Applications

Effect of Evening Primrose Oil-Based Polyol on the Properties of Rigid Polyurethane–Polyisocyanurate Foams for Thermal Insulation

Influence of Moringa oleifera derivates in blends of PBAT/PLA with LDPE

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