Maulidan Firdaus

Ethyl-2-(3,5-Dihidroxyfenol): Phloroglucinol derivatives as potential anticancer material

Ethyl-2-(3,5-dihidroxyfenol) based phloroglucinol compounds have been synthesized. Ethyl-2-(3,5-dihidroksifenol) were synthesized by reacting phloroglucinol with ethyl 2-chloro acetate in excess. Phloroglucinol reaction using 2-chloro ethyl acetate was carried out under reflux for 24 hours at a temperature of 56 oC. The reaction products were identified by a thin layer chromatography and were characterized by melting point test. Analysis of the structure of the products was obtained by FTIR spectrophotometer, H-NMR, and 13C-NMR. The result of the reaction between phloroglucinol and 2-chloro ethyl acetate was brownish black solid, and has a melting point of 191 oC. Based on the structural analysis by FTIR, 1H-NMR and 13C-NMR, the reaction product was a mixture of compounds which is ethyl 2- (3,5-dihidroksifenol) acetate, ethyl-2-(2,4,6-trioxocyclohexyl) acetate, and the rest of phloroglucinol which can not react.

Heat Combustion, Tensile Strength and Biodegradability of Recycled Polypropylene Modified Multifunctional Agent Composites in the Presence of Pineapple Leave Fiber and Bentonite

Had been synthesized different composites from recycled polypropylene (rPP) using Pineapple leave Fiber (PaF), commercial Bentonite (comBen) and zinc borate (ZB). In the optimum formula with ratio rPP/PaF/comBen was 65/15/20 (w/w) and 5 % ZB of different composites are measured their flame retardancy, tensile strength (TS) and biodegradability. This new rPP/PaF/comBen/ZB composites materials have heat combustion (Hg), tensile strength (TS) and biodegradability better than the starting materials. The Hg of rPP/PaF/comBen/ZB decreased to 28%. The TS of rPP/PaF/comBen/ZB according to ASTM D 638 arised to 83%. The biodegradability of rPP/PaF/comBen/ZB in burial test arised to 15.7%.

Effect of single flame retardant aluminum tri-hydroxide and boric acid against inflammability and biodegradability of recycled PP/KF composites

Composites rPP/DVB/AA/KF had been reactively synthesized in melt using starting material: recycled polypropylene (rPP), kenaf fiber (KF), multifunctional compound acrylic acid (AA), compatibilizer divinyl benzene (DVB). To improve the inflammability of composites, single flame retardant aluminum tri-hydroxide (ATH) and boric acid (BA) as an additive was added. The inflammability of the composites was tested according to ASTM D635. By using 20% ATH and 5% BA additive in the composites it is effectively inhibiting its time to ignition (TTI). Its burning rate (BR) can be reduced and its heat realease (%HR) decreases. The biodegradability of composites was quantified by its losing weight (LW) of composites after buried for 4 months in the media with rich cellulolytic bacteria. The result shows that the LW of composites in the presence 20% ATH and 5% BA is 6.3%.