scholarly journals Synthesis and Characterization of Some Ester-type Biolubricants of Soiabean Fatty Acids

2017 ◽  
Vol 54 (2) ◽  
pp. 386-389 ◽  
Author(s):  
Sorina Boran ◽  
Sabina Nitu
Keyword(s):  
Fatty Acids ◽  
Point Of View ◽  
Synthesis And Characterization ◽  
Synthetic Ester ◽  
Microwave Reactor ◽  
Tribotechnical Properties ◽  
Physico Chemical ◽  
Hydroxyl Compounds ◽  
Structural Point

Growing demands from industry for the use of eco-friendly lubricants led research towards finding environmentally friendly products with superior lubricating characteristics. Vegetable oils and synthetic ester oils are competitive base oils used to obtain lubricants with good physico-chemical, rheological and tribotechnical properties, biodegradable lubricants without negative environmental impacts. In this study we aimed the synthesis and characterization of bioesters with lubricant properties, using as acid component the soybean oil fatty acids in conjunction with the following hydroxyl compounds n-buthanol (P1) and 1,2-propilenglycole (P2), respectively. These complex esters were synthesized in a microwave reactor in a single stage in the presence of the catalyst at the reflux temperature. Characterization was carried out in the respective of structural point of view and as a lubricant.

scholarly journals Crystallographic and structural characterization of heterometallic platinum compounds Part VII. Heterohepta- and heterooctanuclear clusters

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Milan Melnik ◽  
Peter Mikuš ◽  
Clive E. Holloway
Keyword(s):  
Structural Characterization ◽  
Structural Parameters ◽  
Bond Distance ◽  
Point Of View ◽  
Platinum Compounds ◽  
Metal Atoms ◽  
Platinum Clusters ◽  
Structural Point

AbstractThis review classifies and analyzes over fifty heterohepta- and heterooctanuclear platinum clusters. There are eight types of metal combinations in heteroheptanuclear: Pt6M, Pt5M2, Pt4M3, Pt3M4, Pt2M5, PtM6, Pt3Hg2Ru2 and Pt2Os3Fe2. The seven metal atoms are in a wide variety of arrangements, with the most common being one in which the central M atom (mostly M(I)) is sandwiched by two M3 triangles. Another arrangement often found is an octahedron of M6 atoms asymmetrically capped by an M atom. The shortest Pt-M bond distances (non-transition and transition) are 2.326(1) Å (M = Ga) and 2.537(6) Å (M = Fe). The shortest Pt-Pt bond distance is 2.576(2) Å.In heterooctanuclear platinum clusters there are eight types of metal combinations: Pt6M2, Pt4M4, Pt3Ru5, Pt2M6, PtM7, Pt2W4Ni2, PtAu6Hg and PtAu5Hg2. From a structural point of view, the clusters are complex with bicapped octahedrons of eight metal atoms prevailing. The shortest Pt-M bond distances (non-transition and transition) are 2.651(3) Å (M = Hg) and 2.624(1) Å (M = Os). The shortest Pt-Pt bond distance is 2.622(1) Å. These values are somewhat longer than those in the heteroheptanuclear clusters. Several relationships between the structural parameters were found, and are discussed and compared with the smaller heterometallic platinum clusters

ChemInform Abstract: Derivatization of Keto Fatty Acids. Part 9. Synthesis and Characterization of Oxathiolanes.

ChemInform ◽  
1987 ◽  
Vol 18 (11) ◽  
Author(s):  
S. AHMAD ◽  
M. KHAN ◽  
F. AHMAD ◽  
NASIRULLA NASIRULLA ◽  
S. M. OSMAN
Keyword(s):  
Fatty Acids ◽  
Synthesis And Characterization

Synthesis and characterization of tall oil fatty acids-based alkyd resins and alkyd–acrylate copolymers

2008 ◽  
Vol 63 (1) ◽  
pp. 92-99 ◽  
Author(s):  
Pirita Uschanov ◽  
Nina Heiskanen ◽  
Pekka Mononen ◽  
Sirkka Liisa Maunu ◽  
Salme Koskimies
Keyword(s):  
Fatty Acids ◽  
Synthesis And Characterization ◽  
Tall Oil ◽  
Alkyd Resins ◽  
Tall Oil Fatty Acids

Synthesis and characterization of poly(3-hydroxyalkanoates) from Brassica carinata oil with high content of erucic acid and from very long chain fatty acids

2011 ◽  
Vol 48 (1) ◽  
pp. 137-145 ◽  
Author(s):  
Giuseppe Impallomeni ◽  
Alberto Ballistreri ◽  
Giovanni Marco Carnemolla ◽  
Salvatore P.P. Guglielmino ◽  
Marco Sebastiano Nicolò ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Erucic Acid ◽  
Brassica Carinata ◽  
Synthesis And Characterization ◽  
Long Chain Fatty Acids ◽  
Long Chain ◽  
Chain Fatty Acids

Synthesis and Characterization of Corn Oil Polyhydroxy Fatty Acids Designed as Additive Agent for Many Applications

2011 ◽  
Vol 88 (8) ◽  
pp. 1211-1221 ◽  
Author(s):  
R. E. Harry-O’kuru ◽  
A. Mohamed ◽  
J. Xu ◽  
B. K. Sharma
Keyword(s):  
Fatty Acids ◽  
Corn Oil ◽  
Synthesis And Characterization

Synthesis and characterization of O-acylated-ω-hydroxy fatty acids as skin-protecting barrier lipids

2017 ◽  
Vol 490 ◽  
pp. 137-146 ◽  
Author(s):  
B. Pérez ◽  
S.E. Dahlgaard ◽  
P. Bulsara ◽  
A.V. Rawlings ◽  
M.M. Jensen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Hydroxy Fatty Acids ◽  
Synthesis And Characterization

Synthesis and Characterization of Novel Surfactants: Combination Products of Fatty Acids, Hydroxycarboxylic Acids and Alcohols

2010 ◽  
Vol 13 (4) ◽  
pp. 399-407 ◽  
Author(s):  
Hans-Josef Altenbach ◽  
Rachid Ihizane ◽  
Bernd Jakob ◽  
Karsten Lange ◽  
Manfred Schneider ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Synthesis And Characterization ◽  
Hydroxycarboxylic Acids

scholarly journals Hexamethylenetetramine reaction with graphite oxide (GO) as a strategy to increase the thermal stability of GO: Synthesis and characterization of a compound

2010 ◽  
Vol 75 (4) ◽  
pp. 497-504 ◽  
Author(s):  
Fariasa de ◽  
Claudio Airoldib
Keyword(s):  
Thermal Stability ◽  
Graphite Oxide ◽  
Point Of View ◽  
Synthesis And Characterization ◽  
Strong Interactions ◽  
Thermal Stability Of

In this paper, the synthesis and characterization of a GO-hmta compound (GO = graphite oxide; hmta = hexamethylenetetramine) are presented. It is shown that the presence of hmta molecules inside the GO matrix, with very strong interactions, stabilize the GO matrix from a thermal point of view. Such a fact could be used to explore possible applications of GO matrix, especially in catalysis.

scholarly journals Synthesis and Characterization of Crosslinked Polymers from Cottonseed Oil

2018 ◽  
Author(s):  
Rangana Wijayapala ◽  
Satish Mishra ◽  
Bill Elmore ◽  
Charles Freeman Jr ◽  
Santanu Kundu
Keyword(s):  
Mechanical Properties ◽  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Tensile Modulus ◽  
Cottonseed Oil ◽  
Synthesis And Characterization ◽  
Network Polymer ◽  
Crosslinked Polymers ◽  
Alkaline Environment

In this study, crosslinked polymers were synthesized from cottonseed oil. Unsaturated fatty acids, the major components of cottonseed oils, were initially epoxidized. A network polymer was then formed by crosslinking the epoxidized oil with maleic anhydrate. Mechanical properties of these polymers were altered by varying the amount of maleic anhydrate. These polymers have a tensile modulus of the order 1 MPa and are stable in the acidic and alkaline environment.<br>

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