Study on the Gas Grafting Efficiency of Paper According to Carbon Number of Fatty Acid Chloride

2020 ◽  
Vol 52 (4) ◽  
pp. 5-11
Author(s):  
Kyoung-Hwa Choi ◽  
Ji-Seon Choi ◽  
Cheol-Woo Lee ◽  
Kwang-Seob Lee ◽  
Jeong-Yong Ryu
Keyword(s):  
Fatty Acid ◽  
Acid Chloride ◽  
Carbon Number ◽  
Fatty Acid Chloride ◽  
Grafting Efficiency

scholarly journals Esterification of Lignin Isolated by Deep Eutectic Solvent Using Fatty Acid Chloride, and Its Composite Film with Poly(lactic acid)

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2149
Author(s):  
Chan-Woo Park ◽  
Song-Yi Han ◽  
Rajkumar Bandi ◽  
Ramakrishna Dadigala ◽  
Eun-Ah Lee ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Fatty Acid ◽  
Composite Film ◽  
Acid Chloride ◽  
Pinus Densiflora ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Morphological Characteristics ◽  
Poly Lactic Acid ◽  
Fatty Acid Chloride

In this study, the effect of lignin esterification with fatty acid chloride on the properties of lignin and lignin/poly(lactic acid) (PLA) composites was investigated. Lignocellulose (Pinus densiflora S. et Z.) was treated using a deep eutectic solvent (DES) with choline chloride (ChCl)/lactic acid (LA). From the DES-soluble fraction, DES-lignin (DL) was isolated by a regeneration process. Lignin esterification was conducted with palmitoyl chloride (PC). As the PC loading increased for DL esterification, the Mw of esterified DL (EDL) was increased, and the glass transition temperature (Tg) was decreased. In DL or EDL/PLA composite films, it was observed that EDL/PLA had cleaner and smoother morphological characteristics than DL/PLA. The addition of DL or EDL in a PLA matrix resulted in a deterioration of tensile properties as compared with neat PLA. The EDL/PLA composite film had a higher tensile strength and elastic modulus than the DL/PLA composite film. DL esterification decreased water absorption with lower water diffusion coefficients. The effect of lignin esterification on improving the compatibility of lignin and PLA was demonstrated. These results are expected to contribute to the development of high-strength lignin composites.

SYNTHESIS OF SATURATED AND UNSATURATEDL-α-LECITHINS ACYLATION OF THE CADMIUM CHLORIDE COMPOUND OFL-α-GLYCERYLPHOSPHORYLCHOLINE

1959 ◽  
Vol 37 (8) ◽  
pp. 953-959 ◽  
Author(s):  
Erich Baer ◽  
Dmytro Buchnea
Keyword(s):  
Fatty Acid ◽  
Low Temperature ◽  
Sodium Hydroxide ◽  
Optical Activity ◽  
Mercuric Chloride ◽  
Acid Chloride ◽  
Cadmium Chloride ◽  
Addition Compound ◽  
Fatty Acid Chloride

A facile procedure for the preparation of saturated and unsaturated L-α-lecithins from L-α-glycerylphosphorylcholine (GPC) is reported. The lecithins are obtained by acylating L-α-GPC, in the form of its cadmium chloride addition compound, with fatty acid chloride and pyridine at low temperature (0°–25°). The acylation proceeds rapidly and yields optically pureL-α-lecithins. The preparation of the distearoyl-, dimyristoyl-, and dioleoyl L-α-lecithins by this procedure is described.The deacylation of lecithins with mercuric chloride or sodium hydroxide was investigated. Both procedures give a partially racemized L-α-GPC. This was established by the finding that the optical activity of the lecithins resulting from reacylating the L-α-GPC preparations in the form of their cadmium chloride compounds was considerably lower than that of the corresponding authentic lecithins.

scholarly journals Esterified Coconut Coir by Fatty Acid Chloride as Biosorbent in Oil Spill Removal

BioResources ◽  
2015 ◽  
Vol 10 (4) ◽  
Author(s):  
Nor Azah Yusof ◽  
Hayati Mukhair ◽  
Emilia Abdul Malek ◽  
Faruq Mohammad
Keyword(s):  
Fatty Acid ◽  
Oil Spill ◽  
Acid Chloride ◽  
Fatty Acid Chloride ◽  
Coconut Coir

Effect of Fluff Pulp Characteristics on the Efficiency of Gas Grafting by Fatty Acid Chloride

2016 ◽  
Vol 48 (5) ◽  
pp. 5
Author(s):  
Jin Ho Seo ◽  
Tai Ju Lee ◽  
Kwang Seob Lee ◽  
Dong Jin Lee ◽  
Myoung Ku Lee ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Acid Chloride ◽  
Fatty Acid Chloride

Gas Grafting of Fatty Acid Chloride and Recycled Fibers

2016 ◽  
Vol 48 (4) ◽  
pp. 54 ◽  
Author(s):  
Tai Ju Lee ◽  
Jin Ho Seo ◽  
Myung Ku Lee ◽  
Jeong Yong Ryu
Keyword(s):  
Fatty Acid ◽  
Acid Chloride ◽  
Fatty Acid Chloride ◽  
Recycled Fibers

SYNTHESIS OF SATURATED AND UNSATURATEDL-α-LECITHINS ACYLATION OF THE CADMIUM CHLORIDE COMPOUND OFL-α-GLYCERYLPHOSPHORYLCHOLINE

1959 ◽  
Vol 37 (1) ◽  
pp. 953-959 ◽  
Author(s):  
Erich Baer ◽  
Dmytro Buchnea
Keyword(s):  
Fatty Acid ◽  
Low Temperature ◽  
Sodium Hydroxide ◽  
Optical Activity ◽  
Mercuric Chloride ◽  
Acid Chloride ◽  
Cadmium Chloride ◽  
Addition Compound ◽  
Fatty Acid Chloride

A facile procedure for the preparation of saturated and unsaturated L-α-lecithins from L-α-glycerylphosphorylcholine (GPC) is reported. The lecithins are obtained by acylating L-α-GPC, in the form of its cadmium chloride addition compound, with fatty acid chloride and pyridine at low temperature (0°–25°). The acylation proceeds rapidly and yields optically pureL-α-lecithins. The preparation of the distearoyl-, dimyristoyl-, and dioleoyl L-α-lecithins by this procedure is described.The deacylation of lecithins with mercuric chloride or sodium hydroxide was investigated. Both procedures give a partially racemized L-α-GPC. This was established by the finding that the optical activity of the lecithins resulting from reacylating the L-α-GPC preparations in the form of their cadmium chloride compounds was considerably lower than that of the corresponding authentic lecithins.

Phosphonolipids. XXVII. Synthesis of phosphonic acid analogs of saturated and unsaturated L-α-lecithins

1977 ◽  
Vol 55 (8) ◽  
pp. 907-910
Author(s):  
Ranga Robinson ◽  
Erich Baer
Keyword(s):  
Fatty Acid ◽  
Low Temperature ◽  
Acid Chloride ◽  
Phosphonic Acid ◽  
Cadmium Chloride ◽  
Chloride Complex ◽  
Fatty Acid Chloride

A procedure for the synthesis of saturated and unsaturated phosphonolecithin from the cadmium chloride complex of sn-glycerol-3-(2-trimethylammoniumethyl)-phosphonate is reported. The phosphonolecithins are obtained by acylating sn-glycerol-3(2-trimethylammoniumethyl)-phosphonate – cadmium chloride complex with fatty acid chloride and pyridine at low temperature. The preparation of the distearoyl, dipalmitoyl, dimyristoyl, and dioleoyl phosphonolecithins by this procedure is described.

Synthesis of Biodegradable Plastic Films from Oil Palm Empty Fruit Bunch Cellulose

2015 ◽  
Vol 1123 ◽  
pp. 173-176 ◽  
Author(s):  
Tjahjono Herawan ◽  
Meta Rivani
Keyword(s):  
Fatty Acid ◽  
Acid Chloride ◽  
Oil Palm ◽  
Homogeneous System ◽  
Biodegradable Plastic ◽  
Molar Ratio ◽  
Cellulose Ester ◽  
Empty Fruit Bunch ◽  
Fatty Acid Chloride ◽  
Molar Ratios

Cellulose from Oil Palm Empty Fruit Bunch (OPEFB) has a possibility to be converted into biodegradable plastic cellulose ester due to its huge availability. Cellulose ester has thermoplastic properties and is widely used in many polymer applications. This paper describes about esterification OPEFB cellulose with long chain fatty acid chloride in homogeneous system. Some different molar ratios of anhydroglucose unit (AGU) to fatty acid chloride were applied to observe cellulose ester with regards to weight increase percentage (%WIP), recovery yield (%RY) and degree of substitution (DS). Others characteristics were also determined, such as solubility and tensile strength of film casting (MPa). Cellulose palmitate, cellulose laurate and cellulose oleate were successfully produced from OPEFB cellulose. The study found that there is a correlation between type and molar ratio of fatty acid chloride. In an identical reaction condition, a longer fatty acid chlorides and a higher ratio molar AGU to fatty acid chloride produce cellulose ester with high WPI except cellulose oleate ester.

Separation of Fatty Acid Dimethyl Esters on an Ionic Liquid Gas Chromatographic Column

2020 ◽  
Author(s):  
R E Pauls ◽  
B Pease
Keyword(s):  
Ionic Liquid ◽  
Fatty Acid ◽  
Stationary Phases ◽  
Carbon Number ◽  
Fatty Acid Esters ◽  
Reaction Products ◽  
Isomer Separation ◽  
Metathesis Reaction ◽  
Polydimethyl Siloxane ◽  
Acid Esters

Abstract An ionic liquid (IL) 111 column was compared with other commonly employed stationary phases including polydimethyl siloxane and polyethylene glycol for the separation of fatty acid monomethyl and dimethyl esters. The fatty acid esters employed in this study were derived from metathesis reactions of vegetable oils both with and without olefins. The IL 111 column demonstrated enhanced performance compared with conventional columns for the separation of these esters. These advantages included significantly enhanced retention of dimethyl esters relative to monomethyl esters, excellent cis/trans isomer separation and the ability to analyze higher carbon number dimethyl esters. As a result, these columns are highly suited for the analysis of mixtures of mono- and dimethyl fatty acid esters found in lipid metathesis reaction products or to determine monofunctional impurities in samples of commercial dimethyl esters.

scholarly journals Profile Analysis of Fatty Acids of Tengkawang (Shorea Sumatrana) Oil Using GC-MS and Antibacterial Activity

2020 ◽  
Vol 8 (2) ◽  
pp. 114-119
Author(s):  
Diah Gusti Riski ◽  
Rico Gewana Resdy Maulana ◽  
Edwin Permana ◽  
Intan Lestari ◽  
Indra Lasmana Tarigan
Keyword(s):  
Antibacterial Activity ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Stearic Acid ◽  
Acid Chloride ◽  
Salmonella Enteritidis ◽  
Profile Analysis ◽  
Negative Control ◽  
Chemical Diversity ◽  
Diffusion Method

The Shorea sumatrana (tengkawang) plant is endemic to Indonesia, especially in Kalimantan and Sumatera regions, which produces chemical diversity especially as a natural drugs. Specific aims to investigate both the profile analysis of fatty acid and antibacterial potential of tengkawang oil. The extract of tengkawang oil was carried out using the soxhlet extraction method. The profile analysis of fatty acid was verified by GC-MS and the antibacterial activity was evaluated using disc-diffusion method. The profile analysis of fatty acid of tengkawang oil indicated the presence of palmitic acid (17.26%), stearic acid (60.68%), oleic acid (11.98%), oleic acid chloride (1.80%), stearic acid chloride (1.86%), glycidyl stearate (1.92%), diethyl phthalate (4%), and 2-monopalmitin (0.5%). We determined the antibacterial activity by the diameter of inhibition of growth zone against Salmonella enteritidis, Escherichia coli, Staphylococcus aureus, and Bacillus cereus at a concentration of 12.5%, 25%, 50%. These were compared with standard tetracycline as positive control and DMSO was assigned negative control. It was found that the highest percentage of fatty acid in tengkawang oil is stearic acid, at 60.68%, and that tengkawang oil is an antibacterial agent with a concentration optimum at 25% with more susceptibility to Gram-positive than Gram-negative bacteria.

Sign in / Sign up

Export Citation Format

Share Document