http://localhost:8081/jspui/handle/123456789/15071 2026-10-18T09:49:54Z 2026-10-18T09:49:54Z Chaurasiya, Sarvam http://localhost:8081/jspui/handle/123456789/21039 2026-05-22T12:41:34Z 2022-05-01T00:00:00Z

Title: ENVIRONMENT-FRIENDLY PRINTING INK ON POLYESTER FILM FOR PACKAGING APPLICATION Authors: Chaurasiya, Sarvam Abstract: In this thesis, the water-based acrylic-co-resins were first synthesized using MMA, BA, AA, and DAAM monomers by solution polymerization in a set of four different formulations by varying the weight % of DAAM, taking the motivation from the literature review. Characterizations result of all formulations for resins were discussed and suitable resin was selected for the preparation of water-based cyan and black ink. Developed WB cyan and black inks had desirable ink properties i.e., particle size of 306nm and 215nm, viscosity value 70cp and 80cp, pH value of 8.5 and 8.2, surface energy of 32 dynes/cm3 and 30 dynes/cm respectively. Further characterization of printed ink film from WB cyan and black inks on corona treated film was performed, pigment particle distribution was found to be homogeneous, and printed in film thickness was found to be approximate 4.6µm, drying of printed ink was also in just 7 and 8 seconds respectively. Adhesion values for cyan and black ink were 70% and 51%, respectively, which needed improvement. Rub resistance and gloss values for both inks were found to be optimum. All the ink and printed ink film properties had optimal values, but both inks showed poor adhesion, which could be increased by adding a suitable cross-linker. Secondly, the adhesion value of developed water-based ink using selected acrylic-co-resin was improved using an ADH crosslinker, DAAM and ADH form a ketone-hydrazide crosslinking, and thus, adhesion values for the synthesized water-based ink increased from 0.1% to 0.3% (weight % of resin) of ADH and then decreases at 0.4% (weight % of resin) as the excessive concentration of ADH will not react with the DAAM molecules and will exist as free molecules, thus crosslinking density will decrease, and adhesion properties will reduce. Four ink were developed using different concentration of ADH (0.1%, 0.2%, 0.3%, and 0.4% of weight of acrylic-co-resin) and all the properties of ink and printed ink film had optimal values, and adhesion was increased from 70% to 95%. Thirdly, DetA (diethanolamine) was used as an alternative neutralizer to ammonia to reduce ammonia's harmful effect on the environment and human health and make the working condition suitable for workers in printing plants. Storage stability also needs to be calculated by observing the change in pH and Viscosity of ink. Storage environment have a tendency to affect the properties of the ink. Here the difference in pH and Viscosity was monitored for 30 days for different formulations of resin and W-IPA solution.

2022-05-01T00:00:00Z Behera, Satyanarayan http://localhost:8081/jspui/handle/123456789/21038 2026-05-22T12:41:08Z 2022-05-01T00:00:00Z

Title: DEVELOPMENT OF HOT-MELT PRESSURE SENSITIVE ADHESIVE FOR PAPER TAPE Authors: Behera, Satyanarayan Abstract: Hot-melt Pressure sensitive adhesives (HM-PSA) have been widely used in industries. The most common type of industry application is Tapes, Labels, Graphics. There has been an increase in demand for Paper based adhesive tapes for Suitability cause. For carton sealing application Hot melt pressure sensitive adhesive based paper tapes are accepted widely in market. This project focuses on development of a new product which is having a Kraft paper as backing and Hot melt PSA as adhesive. This product has a very special requirement of Key characteristic like peel adhesion strength, Loop tack and Shear Strength. In this report covered general definition of Hot-melt pressure sensitive adhesive. This report covers general idea of HM PSA, Key factors related to HM PSA, it is Key Constituents/raw materials, effect of various parameters of Key constituents / raw materials on overall performance of HM PSA Tape. In this report, we analyze the various formulations having different Styrene block co polymer and their effect on key performance parameters of HM PSA tapes. Adhesion of hot-melt PSA to carton surface should be excellent which is otherwise called carton salability which is one of the critical property for carton sealing tapes. Di- block content percentage (S-I %) in Styrene-Isoprene- Styrene (SIS) block copolymer improves carton salability. Di-block copolymer (SI) decreases plateau (G*) modulus of adhesive compound. The damping factor (Tan δ) value increases. The low modulus decreases the shear strength of adhesive however, improves wettability to rough surface like carton surfaces which believed to a critical factor for improving Peel adhesion strength, tack and carton salability of HM PSA formulation. SIS/SI block copolymers are manufactured by anionic polymerization technique are used extensively in very large volume to pressure sensitive adhesive (PSA) tapes, especially to carton sealing tapes. In this project various formulations of HM PSA is developed with SIS+ SI co polymer with selected tackifier resin and oil to improve Adhesion and tack HM PSA.

2022-05-01T00:00:00Z Goyal, Rajat Ramavtar http://localhost:8081/jspui/handle/123456789/21037 2026-05-22T12:40:46Z 2022-05-01T00:00:00Z

Title: POLYMER MODIFIED BITUMEN Authors: Goyal, Rajat Ramavtar Abstract: Modified polymer bitumen has had a considerable influence over the last century in upgrading road pavements against different problems such as thermal cracking, rutting, and potholes, among others, by increasing the qualities of the basic commodity used in road manufacture, namely asphalt. In this report, we have focused on how the waste plastics could be brought to productive use to better the road. We know that a number of thermoplastics (LLDPE, PS, HDPE, LDPE, PE, etc.) are being heavily used in today's environment for various uses. These thermoplastics don't decompose for hundreds of years and just pile up and endanger aquatic life, soil and also pollute the air because they release toxic gases whenever they heat up. Thus, I used various pristine polymers mentioned earlier to use as a modifier for the base bitumen, and studies were carried out for the same to analyze whether it could be used or not. For a good understanding, I used thermoplastic elastomer Styrene Butadiene Styrene block copolymer as a standard reference to compare the conventional and rheological properties with the mentioned thermoplastics. SBS has been used extensively to enhance the properties of the asphalt pavement worldwide. Further, the study was carried out using some grafted polymers and compared to SBS again and was analyzed and concluded.

2022-05-01T00:00:00Z Pragya http://localhost:8081/jspui/handle/123456789/21036 2026-05-22T12:40:29Z 2022-05-01T00:00:00Z

Title: CNT DECORATED CELLULOSE BASED FLEXIBLE NANOPAPER FOR TAILORMADE ELECTRICAL AND MECHANICAL PROPERTIES Authors: Pragya Abstract: Nowadays, the preparation and development of sustainable functional nanomaterials which provides high performance is in trend. Miniaturization and portability found its way to achieve the peak order for most of the electronic products as well as degradable and flexible conductive material. In this study, synthesis of nanofibrillated cellulose based nanopaper accompanied the use of carbon-based fillers i.e., Multi walled carbon nanotube (MWCNT) is discussed. To achieve homogeneous MWCNT dispersion, it has been functionalized with the help of sulphuric and nitric acid. The nanopaper is prepared with the help of solvent casting method. By adjusting the concentration of Functionalized multi-walled carbon nanotubes (FCNTs), low-cost, thin, flexible and biodegradable FCNT/cellulose nanopaper have been created. This research looks at the effects of integrating functionalized carbon nanotubes into cellulose on the electrical, structural, mechanical and thermal characteristics of nanopaper. These nanopapers exhibit good thermal stability and high electrical conductivity. Therefore, these nanopapers can be considered as the opportunity to be an excellent electroconductive material for in electronic devices, energy storage or sensors.

2022-05-01T00:00:00Z