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  Digital Catalogue for Technology and Products Development

   Technology and Product Development

    Basic Information

Technology developed: Recycled Polystyrene Waste based Fabric for Oil Spills Remediation (TP19766404793)
Category: Product (Hardware/Material/Software)
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
Dr. Chandra Sekhar Sharma IIT Hydrabad Chemical Engineering Associate Professor
Technical Application Area: Water Treatment
If 'Other', please specify:
Please give more details of new technical application area:
Polystyrene (PS) is an integral part of global plastic market and a highly valued thermoplastic. Increase in PS usage results in proportional increase in the PS waste, which unfortunately is non-biodegradable leading to serious impact on health and environment. PS packaging are usually discarded in dumps and landfills or incinerated. We have developed a novel, low energy, energy-conservative scalable process to recycle Polystyrene, directly into a versatile non-woven fibrous fabric by using citrus peel waste extract. These fabrics can selectively absorb oil and are hydrophobic, which makes it useful for applications in day to day household cleaning, packaging to global requirement of oil spillage remediation and also as flexible insulators for green buildings.
Indian Institute of Technology (IIT) Hyderabad
Affiliated Ministry: DST, Govt. of India
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
Does the technology have export potential? Yes
Category of Technology developed: Immediate Deployment
Stage of Development: Field Test
Please describe in detail including the TRL Level:
TRL7 Process of direct recycling of polystyrene waste using another agriculture waste citrus fruits peel Sustainable and environment friendly process and product, Fabric is hydrophobic and oleophilic that allows selective absorption of oil from oil water interface Can be used as Kitchen towels, in spas, at ports for oil spills cleaning in hotel and restaurants for cleaning oil spills Uses may be extended for large scale application such as flexible insulator for green buildings


Applications: Besides the technical challenges, the poor economic viability of currently known recycling methods for polystyrene restrains their commercialisation. According to a 2012 study, recycle rate for PS was only 0.9% in USA. Therefore, this technology as developed provides not only scalable but economically viable alternative for recycling of polystyrene waste worldwide. At the same time, the very same technology also addressed another agro-waste (citrus fruits peel). This technology can be applied from residential colonies to municipality level to further larger central scale.
Advantages: Support for technology transfer/co-licensing the technology Hydrophobic and Olephilic Recycled Polystyrene Fabric: INR 50/m There is no existing product available in market that can absorb oil selectively. Existing kitchen towels absorb oil and water both. Also, the prices for such fabric is almost 3 times higher. Our fabric is made by recycling polystyrene which certainly provides an advantage in terms of sustainable environment. The fabric was found to be hydrophobic and oleophilic in nature. Oil retention capacity: After 1 hr, recycled PS fabric still retained 60-75% of oil absorbed. Reusability: After 5 cycles of use, fabric retains almost 50% of its original absorption capacity. The buoyancy test was done in both static and dynamic system shows that the produced fabric does not sink in water even after absorption of oil on the water surface.

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
Imported Raw Materials:
Raw Materials Year ITC-HS Code
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
Existing R&D Facilities used:
Facilities Year ITC-HS Code

    R&D Investment:

R&D investment (Rs. in Lakhs):                    
Indian Source (Rs.) Foreign Source (Rs.) Year
0 0 NA

   Patents & Publications:

Filed Patents (No.) Granted Patents (No.) Year
0 0 NA
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees?
What commercially available products address
the same problem?
Company Product Problem Addressed
Would you like to develop this invention further with
corporate research support?
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
      Submitted by: The Dean R and D Date of Submission: 5-8-2020

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