A study of the drying of linseed oils with different fatty acid patterns using RTIR-spectroscopy and chemiluminescence (CL)

Stenberg, Cecilia; Svensson, Martin; Johansson, Mats

doi:10.1016/j.indcrop.2004.04.002

Cited by 72 publications

(51 citation statements)

References 16 publications

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“…The residual unsaturation is probably due to the high degree of crosslinking that limits oxygen diffusion to the deeper layers of the latex film. [27][28] This result is consistent with the T g change for SoyAA-1 latexes. The similar trends in both the percent unsaturation and T g change of the film samples cured under air and nitrogen validate the role of cobalt catalysis in auto-oxidative crosslinking.…”

Section: Vomm Copolymer Characterizationsupporting

confidence: 83%

Emulsion Copolymerization of Vegetable Oil Macromonomers Possessing both Acrylic and Allylic Functionalities

Kaya

Mendon

Delatte

et al. 2013

Macromolecular Symposia

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Summary: A soybean oil-based vegetable oil macromonomer (VOMM) was incorporated as a comonomer into an all-acrylic copolymer via semi-continuous emulsion polymerization. Structurally, VOMMs are comprised of long hydrocarbon fatty acid moieties with allylic double bonds which enable auto-oxidative crosslinking at ambient temperature. VOMMs facilitate low temperature film formation and the fatty acid chains tethered to the polymer backbone auto-oxidize upon film formation to yield crosslinked films. Latexes with varying VOMM levels were synthesized to elucidate the effect of VOMMs on the pre-cure and post-cure glass transition temperature (T g ) and minimum film formation temperature (MFT). Thermoplastic control latexes (without VOMM) were also synthesized via copolymerization of butyl acrylate and methyl methacrylate. This paper details the characterization performed to validate and quantify the VOMM allylic unsaturation retention before, during, and after polymerization, and to quantify and confirm the increase in T g resulting from auto-oxidative crosslinking via solid state 13 C nuclear magnetic resonance spectroscopy and differential scanning calorimetry.

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Section: Vomm Copolymer Characterizationsupporting

confidence: 83%

Emulsion Copolymerization of Vegetable Oil Macromonomers Possessing both Acrylic and Allylic Functionalities

Kaya

Mendon

Delatte

et al. 2013

Macromolecular Symposia

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“…The drying performance of oil with a high percentage of linolenic acid is faster and the induction time is shorter compared to an oil rich in linoleic acid. This is because oil rich in linolenic acid tends to form a skin layer, causing a diffusion barrier to oxygen resulting in a high level of residual unsaturation in the film (Stenberg et al 2005).…”

Section: Kinetic Parameters For Radical Chain Reactionsmentioning

confidence: 99%

Low temperature oxidation of linseed oil: a review

et al. 2012

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This review analyses and summarises the previous investigations on the oxidation of linseed oil and the self-heating of cotton and other materials impregnated with the oil. It discusses the composition and chemical structure of linseed oil, including its drying properties. The review describes several experimental methods used to test the propensity of the oil to induce spontaneous heating and ignition of lignocellulosic materials soaked with the oil. It covers the thermal ignition of the lignocellulosic substrates impregnated with the oil and it critically evaluates the analytical methods applied to investigate the oxidation reactions of linseed oil. Initiation of radical chains by singlet oxygen ( 1 Δ g ), and their propagation underpin the mechanism of oxidation of linseed oil, leading to the self-heating and formation of volatile organic species and higher molecular weight compounds. The review also discusses the role of metal complexes of cobalt, iron and manganese in catalysing the oxidative drying of linseed oil, summarising some kinetic parameters such as the rate constants of the peroxidation reactions. With respect to fire safety, the classical theory of self-ignition does not account for radical and catalytic reactions and appears to offer limited insights into the autoignition of lignocellulosic materials soaked with linseed oil. New theoretical and numerical treatments of oxidation of such materials need to be developed. The self-ignition induced by linseed oil is predicated on the presence of both a metal catalyst and a lignocellulosic substrate, and the absence of any prior thermal treatment of the oil, which destroys both peroxy radicals and singlet O 2 sensitisers. An overview of peroxyl chemistry included in the article will be useful to those working in areas of fire science, paint drying, indoor air quality, biofuels and lipid oxidation.

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“…Specific difficulty consists of the fact that a lot of research has been dedicated to the investigation of drying of LO in coatings at the interface with the air [20][21][22][23], whereas in the present case the process is going on in the bulk of the dispersion medium at the oil/water interface. Thus, it creates an additional restriction to the penetration of oxygen towards the interface of oil droplets.…”

Section: Introductionmentioning

confidence: 99%

Biofriendly nanocomposite containers with inhibition properties for the protection of metallic surfaces

et al. 2017

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An attempt to combine two ‘green’ compounds in nanocomposite microcontainers in order to increase protection properties of waterborne acryl-styrene copolymer (ASC) coatings has been made. N -lauroylsarcosine (NLS) served as a corrosion inhibitor, and linseed oil (LO) as a carrier-forming component. LO is compatible with this copolymer and can impart to the coating self-healing properties. For the evaluation of the protective performance, three types of coatings were compared. In the first two, NLS was introduced in the coating formulation in the forms of free powder and micro-containers filled with LO, correspondingly. The last one was a standard ASC coating without inhibitor at all. Low-carbon steel substrates were coated by these formulations by spraying and subjected subsequently to the neutral salt spray test according to DIN ISO 9227. Results of these tests as well as the data obtained by electrochemical study suggest that such containers can be used for the improvement of adhesion of ASC-based coatings to the substrate and for the enhancement of their protective performance upon integrity damage, whereas the barrier properties of intact coatings were decreased.

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A study of the drying of linseed oils with different fatty acid patterns using RTIR-spectroscopy and chemiluminescence (CL)

Cited by 72 publications

References 16 publications

Emulsion Copolymerization of Vegetable Oil Macromonomers Possessing both Acrylic and Allylic Functionalities

Emulsion Copolymerization of Vegetable Oil Macromonomers Possessing both Acrylic and Allylic Functionalities

Low temperature oxidation of linseed oil: a review

Biofriendly nanocomposite containers with inhibition properties for the protection of metallic surfaces

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