Pulping of whole jute plant is done by sodium hydroxide and ethylenediamine (EDA) or monoethanolamine (MEA) within 1 hour of cooking. The pulp yield is considerably higher than for the control soda and kraft pulps. Pulps obtained are better in physical properties as compared to kraft and soda pulps. The apparent density of soda-EDA pulps decreases with the increase of EDA in the soda liquor whereas the apparent density of soda-MEA pulps increases with the increase of MEA in soda liquor. Keywords DelignificationPulp yield Soda-amine pulping Physical pulp properties a-cellulose Ethylenediamine MonoethanolamineBrought to you by | Fig. 7. The relation between breaking length and tear factor of soda-amine pulps of whole jute plant at almost similar degree of cooking (í = soda,̆= kraft,̄= soda-10 % EDA, b = soda-20 % MEA).Brought to you by |

Graft copolymerization of acrylate monomers, e.g., methyl methacrylate and ethyl methacrylate, onto bleached sulfonated jute-cotton-blended fabric was carried out in an aqueous medium, using potassium persulfate as an initiator under the catalytic influence of ferrous sulfate in a nitrogen atmosphere. The parameter variables, e.g., concentrations of monomer, potassium persulfate, ferrous sulfate, reaction time, and reaction temperature, directly influenced the percent graft yield. The percent graft yield increased to a certain value in each variable, and the percent graft yield of methyl methacrylate and ethyl methacrylate was about 15.9 and 17.1%, respectively. Polymer grafting was characterized by thermogravimetric analysis, infrared spectroscopy, and X-ray diffractometry. Grafting improved the thermal stability, protected from photo-oxidative degradation, decreased the dyeability, and had positive impact on fastness characteristics.

No abstract

No abstract