http://210.212.227.212:8080/xmlui/handle/123456789/13 Sun, 17 May 2026 00:00:56 GMT 2026-05-17T00:00:56Z http://localhost:8080/xmlui/bitstream/id/32fb7e80-d644-44e4-8daf-8ecb4404961e/faculty_pubs_thumb.jpg http://210.212.227.212:8080/xmlui/handle/123456789/13 http://210.212.227.212:8080/xmlui/handle/123456789/132 Influence of cryogenic and chemical treatment on thermal and physical properties of hemp fabric Mubarak, Ali; Aju Kumar, V N Conventional synthetic materials in engineering applications are imprinting our ecosystem with non-biodegradable wastes. Environmental awareness throughout the world has influenced materials design and selection, which is leading to orientation from synthetic to bio- degradable materials. Efforts are put to improve the properties of existing natural materials for engineering applications. In this study hemp fabric was subjected to alkalization, maleic anhydride treatment and cryogenic treatment, to improve the fabric’s physiochemical properties. Differential scanning calorimetry (DSC), Thermo gravimetric analysis (TGA), and Differential Thermo gravimetric Analysis (DTG) were used to investigate the changes in thermal behaviour of untreated and treated fabric. Physical properties such as functional groups of fabrics were studied and compared with Fourier Transform Infrared Spectroscopy (FTIR).Alkalization and maleic anhydride treatment on fabric have substantially increased the number of hydrogen bonding in cellulose, which lead to increase in stiffness of the fabric. Thermal stability of hemp fabric has increased significantly with cryogenic treatment. An increase in the cellulose composition after the cryogenic treatment shows better physical properties. These observations give hemp fibbers wide range of opportunity to be part of engineering applications with thermal stability, stiffness, and eco-friendly requirements. Fri, 01 Jan 2021 00:00:00 GMT http://210.212.227.212:8080/xmlui/handle/123456789/132 2021-01-01T00:00:00Z http://210.212.227.212:8080/xmlui/handle/123456789/131 Composite scaffolds in tissue engineering Mubarak, Ali Along with growth and development, the technology has also brought us accidents, ailments and diseases. Tissue loss is one of the problems resulting from these. The existing treatments like transplants, surgical repair etc. do not hold well as a permanent cure and they often require painful surgical procedures. Considering other alternatives like tissue engineering and regenerative medicine practices, they focus primarily on permanent cure. Current strategies of regenerative medicine are focused on the restoration of pathologically altered tissue architectures by transplantation of cells in combination with supportive scaffolds and biomolecules. In recent years, considerable interest has been given to biologically active scaffolds which are based on similar analogs of the extracellular matrix that have induced synthesis of tissues and organs. The application of different composites in the field of tissue engineering increased the scope and efficiency of tissue engineering field Wed, 01 Jan 2020 00:00:00 GMT http://210.212.227.212:8080/xmlui/handle/123456789/131 2020-01-01T00:00:00Z http://210.212.227.212:8080/xmlui/handle/123456789/130 Chitosan-reinforced nitrile rubber – a step towards sustainable development Mubarak, Ali This work aims to investigate the effect of chitosan powders on the mechanical, morphological and thermal behaviour of nitrile rubber (NBR). The chitosan content has been varied between 0 and 15 phr. NBR was initially loaded with chitosan using a two-roll mixing mill along with compounding agents and then cured by compression moulding using accelerated sulphur vulcanisation strategy. The results indicate that the mechanical properties of NBR increase at a critical loading of chitosan (12 phr). A new Chitosan Efficacy Index has been proposed to understand the effect of chitosan loading on overall mechanical properties. Morphological examinations by using scanning electron microscopy pointed towards the presence of voids and discontinuities within the fractured surfaces of the composites. Thermogravimetric analysis and water absorption studies have also been carried out to complement the results from the investigation of mechanical properties. Wed, 20 Oct 2021 00:00:00 GMT http://210.212.227.212:8080/xmlui/handle/123456789/130 2021-10-20T00:00:00Z http://210.212.227.212:8080/xmlui/handle/123456789/128 Drying and Atterberg limits of Cochin marine clay Amal, Azad Sahib Marine clays are reported to undergo an irreversible change in plasticity on drying. Various reasons such as the presence of halloysite and allophane minerals that change their structure, the presence of sesquioxides or organic matter that undergo cementation and the presence of salinity that generates strong attractive forces leading to aggregation on drying have been reported. In this study, the properties of Cochin marine clay, obtained from Cochin, India, in air-dried and oven-dried conditions were evaluated. The study shows that the plasticity characteristics get altered on drying, but can be reversed by proper dispersion using dispersion tools. Sat, 28 Dec 2019 00:00:00 GMT http://210.212.227.212:8080/xmlui/handle/123456789/128 2019-12-28T00:00:00Z