Hydrophobic, moisture resistant and biorenewable paper coating derived from castor oil based epoxy methyl ricinoleate with repulpable potential

2021 ◽  
Vol 158 ◽  
pp. 106347
Author(s):  
P.A. Parvathy ◽  
Sushanta K. Sahoo
2020 ◽  
Vol 9 (1) ◽  
pp. 21-28
Author(s):  
Muliadi Ramli ◽  
Saiful Saiful ◽  
Febriani Febriani ◽  
Amraini Amraini ◽  
Fathurrahmi Fathurrahmi ◽  
...  

Realizing abundant availability of local bovine bone wastes in Aceh Province, Indonesia, this study is subjected to take competitive advantages from the local bovine bone waste for preparing an inorganic catalyst preparation. In detail, calcined Aceh bovine bones were successfully intercalated lithium through an impregnation method resulting in the inorganic base catalyst, which showed promising activity in the transesterification of castor oil. Prior to the experiment, the Aceh bovine bone waste was calcined at 900 oC in the air atmosphere for 4 hours, led to forming crystalline phases of hydroxyapatite [Ca5(PO4)3(OH)] and calcium oxide [CaO]. Also, the chemical modification of calcined bovine bone with lithium precursor has enhanced the physicochemical properties of the inorganic base catalyst. Finally, the intercalated Aceh bovine bone has shown a feasible activity in transesterification of castor oil into biodiesel, which yielding methyl ricinoleate as the main product.


2020 ◽  
Vol 71 (4) ◽  
pp. 378
Author(s):  
F. Taieb Brahimi ◽  
F. Belkhadem ◽  
B. Trari ◽  
A. A. Othman

The ricinoleate triglyceride was extracted from castor-oil seeds grown in Algeria and isolated by catalytically methanolyse to methyl ricinoleate. Six diazole and triazole derivatives of ricinoleic acid were synthesized and characterized: 1,3,4-oxadiazole-5-thione (4); 1,3,4-thiadiazole-5-thione (5); 4-N-amino-1,2,4-triazole-5-thiol (7); 1,2,4-triazole-5-thione (9); 5-amino-1,3,4-oxadiazole (10) and 5-amino-1,3,4-thiadiazole (11). The antibacterial and antifungal screening data of synthesized compounds showed appreciable inhibition and among them, 5, 7 and 8 showed more inhibition on Gram positive Enterococcus faecalis than reference ampiciline; while compounds 1, 7, 8, 10 and 11 showed competitive antifungal effects compared to reference amphotericin B. In addition, all synthesized compounds (1-11) showed competitive antioxidant properties, particularly compounds 7 at 125, 250, 500 and 1000 μg/mL and compounds 4, 5 and 9 at a concentration of 1000 μg/mL. The intermediate compounds 1, 2 and 8 showed anti-α-amylase activity at various concentrations in the range of IC50 = (120.25 ± 1.17 - 130.42 ± 2.48). Oxadiazole 4 showed the best α-amylase inhibition by 78.5% at a concentration of 1000 μg/mL.


1977 ◽  
Vol 8 (17) ◽  
pp. no-no
Author(s):  
H. N. ARSANIOUS ◽  
Z. SAWIRIS ◽  
F. G. BADDAR

2018 ◽  
Vol 18 (5) ◽  
pp. 3639-3653
Author(s):  
Pieter Samyn ◽  
Leo Vonck ◽  
Dirk Stanssens ◽  
Henk Van den Abbeele

1903 ◽  
Vol 55 (1420supp) ◽  
pp. 22756-22757
Keyword(s):  

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