Novel poly(alkyd-urethane)s from vegetable oils: Synthesis and properties

Ling, Jem Shan; Mohammed, Issam Ahmed; Ghazali, Arniza; Khairuddean, Melati

doi:10.1016/j.indcrop.2013.10.002

Cited by 47 publications

(35 citation statements)

References 29 publications

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“…As shown in Figure , we found that nearly 1–2 wt % moisture was removed during heating above 100 °C for all of the composites. After that, further degradation may have occurred because of the aliphatic long chain of fatty acid decomposition; this was estimated to be almost 60% of the total degradation. The final stage of the degradation was predicted because of the decomposition of aromatic moieties and ester linkages of the alkyd‐based polymer .…”

Section: Resultsmentioning

confidence: 92%

Effects of zinc oxide on pretreated multiwalled‐carbon‐nanotube‐reinforced biobased polyesters

Islam

Yahaya

Isa

2016

J of Applied Polymer Sci

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In this study, the effects of the incorporation of microsized zinc oxide (ZnO) on multiwalled carbon nanotube (MWCNT)-reinforced palm-oil-based polyester (POPE) were investigated in terms of the UV absorbability, mechanical strength, thermal stability, surface resistivity, and morphology. POPE was prepared by alcoholysis and an esterification process with glycerol, palm oil, and phthalic anhydride. The MWCNTs were dispersed into POPE under in situ conditions during the esterification reaction, whereas ZnO was distributed into the MWCNT-filled POPE resin with an ultrasound technique. The surface morphology was examined to understand the dispersion of the fillers inside the polymer matrix with field emission scanning electron microscopy. In addition, UV absorbability was observed with a UV-visible spectrophotometer. From the results analysis, the surface resistivity was found to be unchanged by the presence of the ZnO particles. In addition, incorporation of ZnO improved the UV absorbability. Moreover, the tensile strength of the ZnO-based POPE was found to be slightly lower compared with that of the MWCNT-filled POPE.

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Section: Resultsmentioning

confidence: 92%

Effects of zinc oxide on pretreated multiwalled‐carbon‐nanotube‐reinforced biobased polyesters

Islam

Yahaya

Isa

2016

J of Applied Polymer Sci

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“…The WUO films with or without antimicrobial agents showed similar behavior of thermal degradation. They consisted of three dominant steps at around 250-350 • C, 350-420 • C, and 420-500 • C, corresponding to the decomposition of the urethane linkage, the degradation of an aliphatic long chain of fatty acid from the linseed oil glyceride component, and the dehydrogenation and depolycondensation of alkyl groups, respectively [33][34][35][36]. The results showed that adding metal-containing antimicrobial agents can slightly enhance the thermal stability of the WUO films, e.g., the weight loss at 450 • C for HDI films were 73%, 69%, and 71% of HDI-0.9, HDI-Pb, and HDI-Ag, respectively, and for IPDI films were 83%, 80%, and 80% of IPDI-0.9, IPDI-Zn, and IPDI-Ag, respectively.…”

Section: Film Properties Of Wuo Coatingsmentioning

confidence: 99%

Synthesis and Antimicrobial Activity of Metal-Containing Linseed Oil-Based Waterborne Urethane Oil Wood Coatings

Chang

2020

Polymers

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In this study, the antimicrobial agents of mono(hydroxyethoxyethyl)phthalate (M(HEEP) 2 ) with different metal of M = Zn, Mn, Pb, and Ca were synthesized from diethylene glycol (DEG), phthalic anhydride (PA), and divalent metal acetates including calcium acetate, zinc acetate, manganese acetate, and lead acetate, respectively. The waterborne urethane oil (WUO) dispersions synthesized from linseed oil, diisocyanates (hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI)), dimethylolpropionic acid at NCO/OH molars of 0.9, by acetone processing method were described as in our previous report. The M(HEEP) 2 antimicrobial agents as well as the commercial nanosilver powder were added into WUO dispersions as the antimicrobial coatings. The effects of various antimicrobial agents and dosages (0.0, 0.2, 0.6, 0.8, 1.0, 2.0, and 4.0 phr) on antimicrobial activity of WUO films against gram-negative bacterium of Escherichia coli, gram-positive bacterium of Staphylococcus aureus, brown-rot fungus of Gloeophyllum trabeum, and white-rot fungus of Lenzites betulina were assessed. In addition, the film properties of the best antimicrobial WUO coatings were also examined. The results showed that the antimicrobial agents of mono(hydroxyethoxyethyl) phthalate M(HEEP) 2 (M = Zn, Mn, Pb, and Ca) powders should certainly be synthesized by FTIR, 1 H-NMR, 13 C-NMR, and energy-dispersive X-ray spectroscopy (EDS) identifications and the yields of them were 43-55%. The results also revealed that the WUO film synthesizing with HDI films containing Zn(HEEP) 2 of 2.0 phr and Pb(HEEP) 2 of 0.4 phr had the best antibacterial activity for E. coli and S. aureus, respectively. The IPDI films containing Zn(HEEP) 2 of 1.0 phr had the best antibacterial activity for both E. coli and S. aureus. For antifungal activity, the WUO film synthesizing with HDI films containing Pb(HEEP) 2 of 0.8 phr and Zn(HEEP) 2 of 2.0 phr as well as IPDI films containing Mn(HEEP) 2 of 0.2 phr and Zn(HEEP) 2 of 4.0 phr had the best performances against G. trabeum and L. betulina, respectively. Comparing with commercial nanoAg powder, the Zn(HEEP) 2 and Pb(HEEP) 2 had a superior antifungal efficiency for G. trabeum and L. betulina, while it had a slightly inferior efficiency in the antibacterial activity for E. coli and S. aureus. On the properties of WUO films, adding metal-containing antimicrobial agents could slightly enhance the thermal stability, but lowered the gloss of all films, however, the T g value increased for HDI film and decreased for IPDI film. In addition to this, they had no significant difference in the film properties including hardness, impact resistance, bending resistance, adhesion, mass retention, and light-fastness between the WUO films with and without adding antimicrobial agents.

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“…Unlike TEA, this neutralizing agent will not evaporate and will permanently be present as a salt in the dried film. Without the intention to be complete, which is beyond the scope of this mini‐review merely focusing on the different classes of PUDs, we refer the reader for more information on air or oxidatively drying PUDs to the literature …”

Section: Crosslinkable Polyurethane Dispersionsmentioning

confidence: 99%

“…Without the intention to be complete, which is beyond the scope of this mini-review merely focusing on the different classes of PUDs, we refer the reader for more information on air or oxidatively drying PUDs to the literature. [18][19][20][21] Table 1 presents typical characteristic properties of a water-based uralkyd dispersion neutralized by TEA and of a uralkyd dispersion neutralized by sodium hydroxide. It is obvious that the newly developed uralkyd emulsion is absolutely odourless and emits no volatile neutralizing amines, which from an environmental and health point of view is a tremendous advantage with respect to the TEA-neutralized systems.…”

Section: Autoxidation: Urethanized Alkyd Resinsmentioning

confidence: 99%

Water‐based polyurethane dispersions

Tennebroek

Casteren

Swaans

et al. 2018

Polymer International

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A general overview is presented of the most relevant and commercially available aqueous polyurethane dispersions (PUDs) and their typical properties. This paper starts with the chemistry and the general composition of standard PUDs and subsequently urethane–acrylic hybrid dispersions are presented with special emphasis on the relation between the obtained morphology and the final material properties. In a section regarding crosslinkable PUDs, the two most frequently applied curing mechanisms are mentioned: firstly the introduction of carbonyl groups into PUDs which can be used for curing at room temperature with amino functional compounds by formation of azomethine moieties, and secondly the introduction of unsaturated fatty acid moieties into PUDs, which enable oxidative curing at ambient conditions. The paper then continues with a section on UV‐curable, acryloyl‐functional PUDs, followed by a section on an interesting new development, namely water‐based polyurethanes with special optic and haptic properties. The paper ends with a section on recently reported modifications of PUDs, including carbon nanotube‐ and graphene‐modified PUDs, PUDs modified with silane coupling agents and PUDs modified with biodegradable moieties. © 2018 Society of Chemical Industry

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Novel poly(alkyd-urethane)s from vegetable oils: Synthesis and properties

Cited by 47 publications

References 29 publications

Effects of zinc oxide on pretreated multiwalled‐carbon‐nanotube‐reinforced biobased polyesters

Effects of zinc oxide on pretreated multiwalled‐carbon‐nanotube‐reinforced biobased polyesters

Synthesis and Antimicrobial Activity of Metal-Containing Linseed Oil-Based Waterborne Urethane Oil Wood Coatings

Water‐based polyurethane dispersions

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