http://localhost:8081/jspui/handle/123456789/17 Tue, 01 Jul 2025 06:46:34 GMT 2025-07-01T06:46:34Z http://localhost:8081/jspui/handle/123456789/17262 Title: "EFFECT OF COMBINED USE OF CATIONIC AND ANIONIC DRY STRENGTH ADDITiVES ON PROPERTIES OF RECYCLED FIBRE (MIXED OFFICE WASTE)" Authors: Tomar, Gaurav Abstract: Day by day the demand for raw material mainly woods is increasing which is not mel with the supply needed because of the amount of forest trees going down, therefore recycled fiber is the best alternate way to meet this problem with a solution. But the main problem with recycled fiber is their declining strength properties this study is based on the usage of dry strength additives to restore the strength properties of recycled fiber. Two oppositely charged dry strength additives namely cationic polyvenyamine and anionic polyvinyl amine had been used in combination to improve the strength properties of secondary fiber from mixed office waste. Cationic polyvinyl amine single handedly improves the strength properties but a saturation level in improvement is observed between .2-.4% of chemical usage. But when both cationic and anionic polyvinyl amine were used in combination it shows an improvement which is 2-3 times more then when only cationic dry strength additive was used. The main improvement was found in tensile and burst strength, tear strength nearly remains same. Optical properties also show an insignificant downfall. Substitution of cationic polyvinyl amine with the natural dry strength additive cationic starch gives satisfying results only up to a substitution of 20%. 1-lence the conclusion drawn says that usage of combined use of cationic and anionic dry strength additive do restore the lost strength of recycled fiber, and this improvement is found to be around 25-28%. Sun, 01 Jun 2014 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17262 2014-06-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/17261 Title: FURNISH OPTIMIZATION FOR PAPERBOARD Authors: Verma, Dilip Kumar Abstract: Paperboard is manufactured by a single piy or multi-ply layer in there furnishes. Raw material use in symmetrical paperboard are bleached hardwood, bleached softwood, broke, deinked pulp, chemical pulp, old newsprint, mixed waste, old corrugated container etc. Multi-ply paperboard is made up of liner plies i.e. top and bottom layer, and filler plies i.e. middle layer. The basic requirements for the paperboard are mechanical strength and stiffness. They may be stacked on top of each other, so that sufficient compression strength is required. Bending stiffness is affected mainly by thickness of paperboard and modulus of elasticity given by the raw material in it. The optimum structure is that the middle ply is very bulky and the top and back plies have high modulus of elasticity. The lower the basis weight that can be achieved by at given stiffness, better the yield is. Sun, 01 Jun 2014 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17261 2014-06-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/17260 Title: OPTIMIZATION OF NANOPARTICLE COMPOZIL SYSTEM TO INCREASE THE RETENTION AND DRAINAGE WITHOUT CHANGING THE PAPER QUALITY Authors: Mohapatra, Satyasila Abstract: Nanoparticles are cast-off in the industry as retention & drainage utilities, frequently in aggregation with cationic starch. The industrial trial concentrated on optimization of Nano silica dose on paper industry in rejoinder with respect to parameters like drainage values, first pass retention; first pass ash retention, cationic charge demand of the whole system, and optical properties like opacity& brightness and strength properties. The interpretations showed that the Nano silica increases the first pass retention, first pass ash retention, drainage and have an analogous effect on optical and strength properties. This is because of the introduction of nanoparticles into a starch transfigures the fiber mat into a porous form that is approachable to retention and drainage Sun, 01 Jun 2014 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17260 2014-06-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/17259 Title: IMPROVING COMPRESSION STRENGTH PROPERT.iES OF RECYCLED OLD CORRUGATED CARTON (0CC) PULP USING STARCH AS INTERNALAS WELLAS SURFACE SIZING AGENT Authors: Lathar, Deepak Abstract: My work concentrates on the effect of cationic starch on the strength properties of the hand sheets made from recycled old corrugated carton. The starch is being used as internal sizing agent and the starch dose was being charged at 0%, 0.5 %, 1% and 2% of pulp oven dried weight at different beating times. The starch was being applied on the surface of the hand sheets as surface sizing agent. The results had showed that the strength properties of the paper were being improved by cationic tirh 'd :oci' '''r' hiiprovcd apprcciahl) and which can hc rc!atcd to ic :tarh adsorption efficiency on the fibers. The starch could improve the compression strength for the box-board grades made from recycled 0CC in the efficient and the effective way. Sun, 01 Jun 2014 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17259 2014-06-01T00:00:00Z