Gas Grafting of Fatty Acid Chloride and Recycled Fibers

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.

Download Full-text

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

Canadian Journal of Biochemistry and Physiology ◽

10.1139/o59-105 ◽

1959 ◽

Vol 37 (8) ◽

pp. 953-959 ◽

Cited By ~ 97

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.

Download Full-text

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

BioResources ◽

10.15376/biores.10.4.8025-8038 ◽

2015 ◽

Vol 10 (4) ◽

Cited By ~ 7

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

Download Full-text

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

Journal of Korea Technical Association of The Pulp and Paper Industry ◽

10.7584/jktappi.2016.10.48.5.5 ◽

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

Download Full-text

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

Journal of Korea Technical Association of The Pulp and Paper Industry ◽

10.7584/jktappi.2020.08.52.4.5 ◽

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

Download Full-text

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

Canadian Journal of Biochemistry and Physiology ◽

10.1139/y59-105 ◽

1959 ◽

Vol 37 (1) ◽

pp. 953-959 ◽

Cited By ~ 22

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.

Download Full-text

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

Canadian Journal of Biochemistry ◽

10.1139/o77-134 ◽

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.

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1123.173 ◽

2015 ◽

Vol 1123 ◽

pp. 173-176 ◽

Cited By ~ 1

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.

Download Full-text

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

Indo J Chem Res ◽

10.30598//ijcr.2020.8-dgr ◽

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.

Download Full-text