http://dspace.dtu.ac.in:8080/jspui/handle/123456789/110 2026-04-28T04:04:52Z 2026-04-28T04:04:52Z KATYAL, HIMANSHU http://dspace.dtu.ac.in:8080/jspui/handle/repository/20365 2024-01-15T05:33:05Z 2021-06-01T00:00:00Z

Title: PREPARATION CHARACTERIZATION AND OPTIMIZATION OF CARBOXYMETHYL TAMARIND KERNEL GUM-POLY VINYL ALCOHOL HYDROGEL VIA DATA ENVELOPMENT ANALYSIS Authors: KATYAL, HIMANSHU Abstract: Conventional synthesis process usually involves hit and trial approach which is laborious process that consumes ample resources and time. Hence, it’s really important to adopt computer-aided techniques of optimization for selecting the optimum parameters which are used in synthesis of material involved. In my work, a novel optimizing technique was used for precise synthesis of carboxymethyl tamarind kernel gum (CMTKG) - poly vinyl alcohol (PVA) based hydrogel which itself is a novel combination. In this total 16 samples were prepared by varying the input parameters such as concentrations of both polymers, initiator and crosslinker and the products formed were analyzed for optimizing the reaction variables using data envelopment analysis (DEA). Each sample was considered as decision making unit (DMU) in order to get the efficiency frontier. Data Envelopment Analysis was applied to different DMUs to obtain their relative efficiencies according to which efficient and inefficient DMUs were discriminated. Also, to improve the performance of inefficient DMUs, slack analysis was done for CCR DEA model. Slack of inputs shows how much excess amount is there in each DMU which suggest possible reduction in inputs to improve the efficiency of that DMU. Experimentally swelling studies were also carried out in order to validate the model by matching it with the predicted DMU. This innovative green technique used for accurate synthesis of CMTKG-PVA hydrogel helped in predicting the optimal parameters using less time, labour and resources. This thesis entitled “Preparation, Characterization and Optimization of Carboxymethyl Tamarind Kernel Gum- Poly Vinyl Alcohol based hydrogel via Data Envelopment Analysis” includes the synthesis of hydrogel, its characterization by FTIR, SEM, TGA, DSC and the use of Data Envelopment Analysis for optimizing the reaction variables used in synthesis including study of swelling kinetics and rheological study of the optimized hydrogel. The whole study is compiled in five chapters, (1) Introduction (2) Literature review (3) Experiment Performed (4) Result and Discussion (5) Conclusion

2021-06-01T00:00:00Z SOLANKI, RAHUL http://dspace.dtu.ac.in:8080/jspui/handle/repository/18319 2021-03-31T07:03:58Z 2020-07-01T00:00:00Z

Title: PREPARATION AND ANALYSIS OF POLY (ACRYLAMIDE-GUAR GUM) HYDROGEL Authors: SOLANKI, RAHUL Abstract: As we as a whole know the significance of green science combination and portrayal of ecological benevolent changed regular polymers is need of time. These regular polysaccharides additionally dispose of the risk to wellbeing and condition. Guar gum is one of the significant normally happening polymer having wide applications because of its rheological adjusting properties in therapeutic, pharmaceutical, food, material and scores of other modern and business divisions. There has been wide investigation on physiochemical and pharmaceutical properties of guar gum yet concentrate on adjusted guar gum and its subsidiaries are very inadequate. Unmodified guar gum has certain downsides like absence of lucidity and free streaming properties, fall in thickness and turbidity on draw out remain, and so on. These disadvantages can be overwhelmed by altering and derivatives of guar gum and can be utilized in multidiscipline fields. In this work I have all set hydrogels of Polyacrylamide-Guar gum hydrogels using glutaraldehyde as cross linker and potassium persulphate as initiator. Hydrogels with varying concentration of cross linker and guar gum were prepared and their swelling with admiration to time and temperature were studied. The effect of concentration of cross linker and guar gum on the inflammation of the hydrogel was calculated. The hydrogels were described by FTIR spectroscopy and TGA. Percentage swelling was chosen as the parameter for deciding the paramount hydrogel in each series of the guar gum concentration. The hydrogels showed considerable swelling and also the swelling exponent was found to be in the range of 0.919-0.997 thus, indicating the non-fickian diffusion mechanism. The regression coefficient was found to be 0.992-0.995.

2020-07-01T00:00:00Z GARG, PALAK http://dspace.dtu.ac.in:8080/jspui/handle/repository/18318 2021-03-31T07:03:49Z 2020-07-01T00:00:00Z

Title: BIOSYNTHESIZED RGO@ZNO NANOCOMPOSITE FOR BOVINE SERUM ALBUMIN DETECTION Authors: GARG, PALAK Abstract: Bovine serum albumin (BSA) is a globular protein that plays a pivotal role in the delivery of fatty acid/amino acid. The presence of multiple binding sites in BSA allows it to interact with many inorganic, organic molecules, ionic metals, and radicals. The reduction of BSA may cause various diseases in cattle families, thus making the quantification of BSA crucial. In the present work, efforts have been made to fabricate an immunosensor for the detection of BSA using reduced graphene oxide@zinc oxide nanocomposite (rGO@ZnO). The nanocomposite has been synthesized via a biosynthetic approach, where Aloe vera leaf extract was used as a reducing agent. The characterization of the nanocomposite was conducted using UV-visible spectroscopy, FT-IR, Zeta Potential and TGA techniques. Further, the rGO@ZnO nanocomposite was deposited electrophoretically on indium tin oxide coated glass substrate, followed by the immobilization of antibodies. The fabricated rGO@ZnO biosensor exhibits a good linear range (0.001 to 30 ng mL-1 ), low detection limit with acceptable selectivity and stability.

2020-07-01T00:00:00Z SINGH, BALVEER http://dspace.dtu.ac.in:8080/jspui/handle/repository/17550 2020-02-28T05:40:55Z 2006-06-01T00:00:00Z

Title: FORMATION AND EVALUTION OF BAMBOO PULP FOR MEDICAL APPLICATIONS Authors: SINGH, BALVEER Abstract: Bamboo fibers have natural antibacterial property and have high absorbing apacity. d antimicrobial agent. Therefore bamboo fiber products will not cause skin llergies. material such as sanitary wels, gauze mask, absorbent pads, and food packing and so on dage using bamboo pulp and compare its property with the market vailable bandage. This thesis deals with the preparation of bamboo pulp composite and its evaluation for it’s suitability for medical application like wound dressing and absorbent material for hygiene application c Bamboo fiber has a unique function of anti bacteria, which is suitable to make wound dressing article like bandage. . In the medical scope, it can be processed into the products of bamboo fiber gauze, operating coat and nurse dresses etc. Because of the natural antibiosis function of the bamboo fiber the finished products need no adding of any artificial synthesize a Bamboo sanitary materials include bandages, masks, surgical clothes, nurse’s wears and so on....

2006-06-01T00:00:00Z