Epoxy Coatings Based on Modified Vegetable Oils for Wood Surface Protection against Fungal Degradation

2020 ◽  
Vol 12 (12) ◽  
pp. 14443-14458 ◽  
Author(s):  
Liliana Rosu ◽  
Cristian−Dragos Varganici ◽  
Fanica Mustata ◽  
Dan Rosu ◽  
Irina Rosca ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Wood Surface ◽  
Epoxy Coatings ◽  
Surface Protection ◽  
Fungal Degradation

Electron beam processed plasticized epoxy coatings for surface protection

2011 ◽  
Vol 130 (1-2) ◽  
pp. 237-242 ◽  
Author(s):  
Mervat S. Ibrahim ◽  
Heba A. Mohamed ◽  
Nadia G. Kandile ◽  
Hossam M. Said ◽  
Issa M. Mohamed
Keyword(s):  
Electron Beam ◽  
Epoxy Coatings ◽  
Surface Protection

Wood surface protection with different alkoxysilanes: a hydrophobic barrier

Cellulose ◽  
2013 ◽  
Vol 20 (6) ◽  
pp. 3131-3141 ◽  
Author(s):  
E. Cappelletto ◽  
S. Maggini ◽  
F. Girardi ◽  
G. Bochicchio ◽  
B. Tessadri ◽  
...  
Keyword(s):  
Wood Surface ◽  
Surface Protection ◽  
Hydrophobic Barrier

scholarly journals Study of biodegradability of the vegetable oil modified epoxy coatings

Vestnik MGSU ◽  
2019 ◽  
pp. 1572-1583
Author(s):  
Elena M. Gotlib ◽  
Anh Nguyen ◽  
Tatiana V. Vdovina ◽  
Olga M. Rakova ◽  
Alla G. Sokolova
Keyword(s):  
Vegetable Oil ◽  
Vegetable Oils ◽  
Rubber Tree ◽  
Practical Importance ◽  
Polymer Materials ◽  
Epoxy Coatings ◽  
Polymer Waste ◽  
Soxhlet Apparatus ◽  
Modified Epoxy ◽  
Biodegradation In Soil

АBSTRACT Introduction. For solving environment protection problems and reducing the volume of ‘polymer waste’, the study of biodegradability of polymer materials by means of their modification without impairing main performance is of practical importance. This is achievable by application of biodegradable natural additives. The radical solution is the development of polymer materials that are capable of retaining their performance throughout their service life only. Materials and methods. To modify compositions, APh-2 aminoalkylphenol-cured ED-20 epoxy diane resin was used. Liquid fraction of rubber tree oil (RTO) and Vietnam-produced soybean oil (SO) were used as the modifiers. Biodegradability of the materials was evaluated by Sturm’s method checking respirometric activity of soil in their presence. Resistance of the epoxy materials to microbiological putrefaction in soil was investigated by mass loss value. Thermal stability of the epoxy coatings was tested by simultaneous thermal analysis on Netzch-Gerätebau GmbH apparatus at the heating rate 10 °C/min when the temperature varying within the range of 25 °C to 600 °C. Water absorption was evaluated as per GOST 4650-2014 standard. Sol-gel analysis was implemented in boiling acetone in the Soxhlet apparatus. Abrasion hardness of epoxy materials was carried out on the IZV-1 vertical optical caliper. Hardness was checked by Barcol impressor. Frictional factor was determined by means of the CSM Instruments Tribometer automated friction machine. Results. Applying vegetable oils governs a significant growth of the abrasion resistance and enhancement of antifriction characteristics of epoxy materials. The vegetable oils exercise a plasticizing effect on epoxy compositions, accelerate processes of epoxy material biodegradation in soil and reduce their resistance to micromyces. Epoxy resin is characterized with high funginertness and its modification by the RTO results in enhancement of biodegradability when exposed to mouldy fungi. Conclusions. Applying the RTO as a modifier of the epoxy materials accelerates processes of their biodegradation in soil and decreases their resistance to micromyces. The higher biodegradation of vegetable oil-modified epoxy films takes place at complex exposure to bacteria and mycelian fungi as a part of soil microbiocenosis.

Wood surface protection with some titanium, zirconium and manganese compounds

2003 ◽  
Vol 82 (3) ◽  
pp. 409-419 ◽  
Author(s):  
K.J. Schmalzl ◽  
P.D. Evans
Keyword(s):  
Wood Surface ◽  
Surface Protection ◽  
Titanium Zirconium ◽  
Manganese Compounds

scholarly journals The Effect of Different Vegetable Oils on Cedar Wood Surface Energy: Theoretical and Experimental Fungal Adhesion

2022 ◽  
Vol 2022 ◽  
pp. 1-8
Author(s):  
Fadoua Bennouna ◽  
Moulay Sadiki ◽  
Soumya Elabed ◽  
Saad Ibnsouda Koraichi ◽  
Mohammed Lachkar
Keyword(s):  
Surface Energy ◽  
Vegetable Oils ◽  
Wood Surface ◽  
Linseed Oil ◽  
Environmental Scanning Electron Microscopy ◽  
Untreated Wood ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Fungal Strains ◽  
Penicillium Commune

Despite having been used for ages to preserve wood against several effects (biological attack and moisture effects) that cause its degradation, the effect of vegetable oils on the cedar wood physicochemical properties is poorly known. Thus, in this study, the hydrophobicity, electron-acceptor (γ+), and electron-donor (γ−) properties of cedar wood before and after treatment with vegetable oils have been determined using contact angle measurement. The cedar wood has kept its hydrophobic character after treatment with the different vegetable oils. It has become more hydrophobic quantitatively with values of surface energy ranged from −25.84 to −43.45 mJ/m2 and more electron donors compared to the untreated sample. Moreover, the adhesion of four fungal strains (Penicillium commune (PDLd”), Thielavia hyalocarpa, Penicillium commune (PDLd10), and Aspergillus niger) on untreated and treated cedar wood was examined theoretically and experimentally. For untreated wood, the experimental adhesion showed a positive relationship with the results obtained by the extended Derjaguin–Landau–Verwey–Overbeek (XDLVO) approach which found that all fungal strains could adhere strongly to the cedar wood material. In contrast, this relationship was not always positive after treatment. The Environmental Scanning Electron Microscopy (ESEM) has shown that P. commune (PDLd10) and A. niger were found unable to adhere to the wood surface after treatment with sunflower and rapeseed oils. In addition, the results showed that the four fungal strains’ adhesion was decreased with olive and linseed oils treatment except that of P. commune (PDLd10) treated with linseed oil.

Occupational and environmental exposure to tribromophenol used for wood surface protection in sawmills

2005 ◽  
Vol 15 (3) ◽  
pp. 171-179 ◽  
Author(s):  
Manuel Gutiérrez ◽  
José Becerra ◽  
Juan Godoy ◽  
Ricardo Barra
Keyword(s):  
Environmental Exposure ◽  
Wood Surface ◽  
Surface Protection ◽  
Occupational And Environmental Exposure

scholarly journals EPOXIDATED RUBBER SEED OIL AND SOY AS EFFECTIVE MODIFIERS OF EPOXY POLYMERS

2019 ◽  
Vol 62 (9) ◽  
pp. 79-85
Author(s):  
Elena M. Gotlib ◽  
Thi Lan Anh Nguyen ◽  
Dmitry G. Miloslavskiy ◽  
Raisa A. Akhmedyanova
Keyword(s):  
Soybean Oil ◽  
Vegetable Oils ◽  
Seed Oil ◽  
Epoxidized Soybean Oil ◽  
Internal Stresses ◽  
Relaxation Processes ◽  
Epoxy Coatings ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Epoxy Polymers

The search for rational areas of industrial use of rubber seed oil for the countries of Southeast Asia, South America and Africa, where Hevea brasiliensis grows in vast areas, is of great practical and scientific interest, both from ecological, economic and technical points of view. In this regard, the studies of the preparation and the use of epoxidized rubber seed oil are important. Due to the presence of double bonds, this vegetable oil is relatively easily functionalized. The epoxidation of rubber seed oil was carried out by us with hydrogen peroxide under the conditions of interphase catalysis in the presence of tungsten-containing catalysts. Epoxidized vegetable oils are of great interest as reactive modifiers for epoxy-diane polymers. For comparison with ERSO, industrial epoxidized soybean oil was investigated. Modification by both epoxidized rubber seed oil and epoxidized soybean oil of epoxy compositions cured with amines of different chemical structure, causes a significant increase in their hardness, wear resistance and improved antifriction indicators. The content of the gel fraction is reduced, that is, the density of the cross-linked structure of epoxy coatings formed in the presence of epoxidized rubber seed oil and soybean oil, which are partially included in the structure, and partially perform the functions of plasticizing agents, decreases. A similar effect was found when epoxy polymers modifying with epoxidized palm trees oil. The decrease cross-linked density of epoxy polymers modified with epoxidized vegetable oils causes an increase in the mobility of the elements of the structure, due to the presence of flexible fragments in the modifiers. This greatly make easier the relaxation processes in the composition, which helps to reduce internal stresses and improve properties. Moreover, epoxidized soybean oil to a greater extent reduces wear and friction coefficient of epoxy coatings, compared with epoxidized rubber seed oil.

scholarly journals Wood Surface Protection against Artificial Weathering with Vegetable Seed Oils

BioResources ◽  
2013 ◽  
Vol 8 (4) ◽  
Author(s):  
Ozlem Ozgenc ◽  
Onur Tolga Okan ◽  
Umit C. Yildiz ◽  
Ilhan Deniz
Keyword(s):  
Wood Surface ◽  
Seed Oils ◽  
Surface Protection ◽  
Artificial Weathering ◽  
Vegetable Seed

The Commerce in Vegetable Oils

1895 ◽  
Vol 40 (1031supp) ◽  
pp. 16486-16486
Author(s):  
P. L. Simmonds
Keyword(s):  
Vegetable Oils

Quality Enhancement of the Rounded Wood Surface

2017 ◽  
Vol 33 (1) ◽  
Author(s):  
Aleksandr Chemodanov ◽  
Evgenii Iamshchikov ◽  
Roman Lozhkin ◽  
Aleksandr Turuev
Keyword(s):  
Wood Surface ◽  
Quality Enhancement
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