Fluid Loss and Filtration Properties of a Citrus Sinensis Pectin Extract-based Drilling Mud

The production of drilling mud using pectin extracted from Citrus Sinensis peels was carried out. The extraction was carried out using water-hot acid technique which is a conventional method, and the extracted pectin was pre-gelatinized using calcium water. The pre-gelatinized pectin biopolymer was used to prepare drilling mud. Filter loss method was used to determine the filtration properties of the mud at 25°C and 200°C and 0.1g/mol concentration of pectin polymer was compared to the filtration behavior of hydroxyl propyl starch modified drilling mud. Our results showed that the pectin biopolymer mud (PPM) has better filtration control behavior than the hydroxyl propyl starch modified drilling mud (CMM). The study also showed that highest sorptivity value of 21.25 was obtained with PPM at 200°C, while the highest diffusivity value of 0.424 was obtained with CMM at 200°C. Keywords: Pectin, Citrus, Biopolymer, Sorptivity, Diffusivity, Drilling mud, Filtration DOI: 10.7176/CMR/12-3-03 Publication date:March 31st 202

Effects of acetylation treatment on pineapple leaf fiber (Ananas comosus) reinforced with tapioca bio-based resin (cassava starch)

AbstractIn this research, the effects of acetylation treatment on pineapple leaf fiber (Ananas comosus) reinforced with tapioca bio resin (cassava starch) were studied. The mechanical and chemical properties were examined using a yarn textile machine and an FTIR instrument. Alkali (NaOH), glacial acetic acid (CH3COOH) and acetic anhydride ((CH3CO)2O) were used for the treatment. After the treatment, an increase in the surface roughness of the fiber and a reduction in its hydrophobic nature were observed. A better mechanical locking property was also achieved due to the introduction of void on the fiber’s surface. FTIR spectroscopy indicated that there were slow but consistent changes that led to the removal of materials like oil, lignin, wax and pectin when the treatment time was increased. The results show various peaks in the absorbance versus wave number relation and the presence of O-H stretch, H-C-H bond, N-H stretch and N=O bond. The results from the tensile test proved that acetylation-treated pineapple fiber reinforced with cassava enhances the mechanical strength of the fiber when compared with untreated fiber