A number of polycarboxylic acids butane tetracarboxylic acid BTCA, polyacrylic-co-maleic acid PAMA, citric acid, maleic-itaconic MA-IA were examined, in combination with sodium hypophosphite SHP in order to give a similar high fabric crease recovery performance and whiteness index to traditional formaldehyde based crease agents. BTCA showed to be the best crease resist agent for crosslinking co...

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Semi-synthetic hydrogels made of carboxymethyl hyaluronic acid (CMHA) and polyacrylic (PAA) were synthesized using electron beam irradiation. CMHA, with a degree substitution 0.87 molecular weight 149 kDa, was mixed linear PAA slightly crosslinked (Carbopol). The equal ratio the CMHA-Carbopol blends (10% 10% Carbopol) successfully crosslinked, even at low irradiation dose 20 kGy, producing hydr...

An artificial neural network has been used to determine the volume flux and rejections of Ca2+ , Na+ and Cl¯, as a function of transmembrane pressure and concentrations of Ca2+, polyethyleneimine, and polyacrylic acid in water softening by nanofiltration process in presence of polyelectrolytes. The feed-forward multi-layer perceptron artificial neural network including an eight-neuron hidde...

Polyacrylic acid (PA) injected into tobacco cv. Xanthi-nc induced complete resistance to infection with TMV or tobacco necrosis virus but only partial resistance to potato virus X. The effect was maximal when the injection was made 2 to 3 days before inoculation. The lesion size was limited when the injection was made after inoculation. Using PA of 35oo, 27ooo, 76ooo, 23oooo and ~ × IO ~ tool. ...