B. L. Deopura and B. R. Chahar|
Department of Textile Technology and Department of Civil Engineering
Indian Institute of Technology, IIT, New Delhi-110016
Tel : 011-26591408/1; 011-26591187 Fax: 011-26581103;
A part of this work was completed under research scheme titled “Fabric based Sheet Material for Canal Lining” of INCID, Ministry of Water Resources, Government of India.
A fabric-based sheet material has been developed for water lining applications. Generally LDPE films of around 200 micrometers are used in India for lining in canals and water ponds, but these films get damaged during construction itself and hence serve very limited purpose in controlling water seepage. Internationally, HDPE sheets with thicknesses of 1.5-2.0 mm are used. However, as these are thick sheets, there is significant cost of transportation and installation. The sheets developed at IIT Delhi are of around 0.5 mm thickness with puncture and other properties comparable to that of the ones used internationally. These sheets are typically used in buried versions to protect from (a) stealing/vandalism and (b) direct sunrays to increase the life. These sheets support all type of protective layers like soil cover, stone pitching, brick layer or cement/concrete layer. These sheets are generically referred as geomembranes.
The results show that the water seepage is significantly controlled with these sheets. Thus, the sheets developed at IIT Delhi are useful for seepage control for a range of applications i.e. canal, tanks, dams and other water bodies. These could also be used in rehabilitation of existing canals, dams etc. These may prove most effective in expansive soils where concrete lining would result into cracks. The sheet materials could find applications in construction industry, specifically in basement and roof construction. Repair jobs for water seepage control could be plentiful.
Professor Bhuvanesh Gupta|
Bioengineering Laboratory, Department of Textile Technology,
Indian Institute of Technology, New Delhi- 110016, India.
Tel: +91-11-26591416, +91-9871639232; Fax: +91-11-26581061;
Email: email@example.com; Bhuvanesh_universe@gmail.com;
Author is the Professor of Polymer Technology at IIT New Delhi. The group activities are directed to the Bioengineering & Healthcare Systems where fabrication of biomaterials based on polymers is being pursued. Group has collaboration with different laboratories in India and Europe. With strong financial support of from government and highly qualifies scientists as well as students, the group is able to develop several biomaterials.
The polymeric materials have generated considerable interest in human healthcare where materials in the form
of films, and fibrous structures are being used. The biomaterials represent the most innovative domain of medical
science & technology where these materials remain in close contact with the biological environment. The major
requirement of the materials is the bioreceptivity and biocompatibility at the application site in human being. The
Bioengineering Group in the Centre for Polymer Science & Engineering and, Department of Textile Technology at
IIT Delhi has been working in four domains: Sutures, Wound dressings, Tissue Engineering and
Efforts are specifically targeted towards the problems of Atherosclerosis and Aneurysm. This leads to hardening of plaque and resulted in narrowing arteries subsequent to angina. To overcome these problems, tissue engineering approach is followed for the regeneration of blood vessels using biostable as well as biodegradable polymers. The idea is to design biodegradable polycaprolactone based scaffolds and braidings of less than 6 mm diameter, followed by cell seeding on these scaffolds. Once the scaffold degrades out during the transplantation stage, it leaves behind the blood vessel as the original one.
The interest lies in the development of the functional nanogels which have the tendency to interact with the biomaterials surfaces and make them antimicrobial. The nanosilver gels prepared in our laboratory exhibit a number of properties that have not been seen before. We have successfully prepared nanosilver nanohydrogel which is functionally active antimicrobial agent, which can be directly attached with the surface of catheter. The sizes of these nanoparticle are in 5 to 50 nm depending upon the polymerization conditions.
About the Group:
The activities in our group are performed in collaboration with several national and International groups.
Group has published 150 papers on research work that has been carried out in our laboratory. Around 240 papers have been presented in conferences, 24 patents have been filed and 8 books have been authored. A large number of conferences have been organized in the above given research domains. Also many research projects have been completed and going on in our laboratory.