Commercial wheat straw soda lignin was used to develop an alkali-O2 oxidation method to produce a ready-to-use solution for concrete plasticizing (cement dispersing). Lignin characterization was done directly from the solution. Depending on conditions, oxidation primarily induced either condensation or degradation of lignin. Thus, both the negative charge and the molar mass of the lignin were c...

The main objective of this study was to prepare sustained release metformin hydrochloride microcapsules by the Wurster fluidized bed and to obtain the optimized coating process and formulation. Fine microcapsules without agglomeration were obtained in a continuous coating process with the atomization air pressure of 0.2Mpa and an appropriate coating speed temperature. With other design variable...

The deoiled rice bran, industrial waste (paddy husk, potato peels and banana peels) and plasticizers were added to develop pellets after extrusion for their further use in preparing molds (pots) for horticultural use. Pellets were prepared by extrusion technology using glycerol and cashew nut shell liquid as plasticizers and were dried in a chamber with constant air circulation (1.5 m/sec). Dry...

Reaksi epoksidasi mengubah ikatan rangkap pada senyawa olefin menjadi epoksida atau oksiran. Metil ester dari minyak nabati dengan kandungan asam lemak tak jenuh dapat digunakan sebagai bahan baku reaksi epoksidasi. Epoksida berbasis memiliki potensi yang besar untuk plasticizer pemrosesan polimer. Pada penelitian ini, dilakukan secara in-situ menggunakan asetat, hidrogen peroksida, dan sulfat ...

Proses finishing merupakan salah satu proses yang dilakukan di pabrik plasticizer dan bertujuan untuk mendapatkan hasil produk bebas dari pengotor. Pada ini digunakan steam distillation memisahkan crude ester (produk) garam-garam reaksi, sisa octanol, air. Selama tersebut belum ada melakukan analisa jumlah stage secara teori pada kolom distilasi digunakan. Perhitungan diperoleh grafik menggunak...