Expert Details

Expert in Rubber Chemistry and Technology, Polymer synthesis, Organic synthesis, Nanotechnology, Surface chem.

Expert ID: 731216 India

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Summary of R&D work in collaboration with the industry. Michelin Tires: Project Aim: Functionalization of Used Tire Rubber by Hydrosilylation His Contribution:
• Characterization of the raw material using various analytical techniques such as ATR-FTIR, X-Ray Photoelectron spectroscopy, SEM/EDXS(for Morphology Assessment), FTIR- Mass Spectroscopy, Thermogravimetric analysis (Thermal stability) and Differential Scanning calorimetry (glass transition temperature).
• Treatment of Crude rubber (SBR/NR) with Si69 (S Crosslinker) and sulfonyl amide for relative optimization and characterization of the treated sample with the non treated sample using the techniques mentioned above (primarily FTIR) and TGA
• Functionalization of used tire rubber by hydrosilylation by the platinum catalyzed (Kartsteds catalyst) as well as autocatalyzed reactions and supplying these samples after characterization by the above mentioned analytical tools to Michelin for tire formulation, compounding and testing (properties such as uncure /cure properties, shore A test Rheometry, Dynamic Mechanical analysis)

Michelin patented this technology in the year 2006 on increasing the property values in new tires by including this functionalized used tire rubber.

Lehigh Technlogies LLC ( Leading manufacturer of cryogenic ground tire rubber)

• His work with Lehigh illustrated that used tire rubber powder( SBR-NR/ Nitrile Rubber) can be used to increase the property values in most rubber products, including new tires, extending its usefulness beyond just an added
filler. With this study, tire manufacturers worldwide have a viable alternative ingredient that can be used to make ‘green’ tires, while at the same time enhancing the performance of the tire.

• LLDPE films filled with 2.5 wt (%) and 5.0 wt (%) UTR were provided by Lehigh. The objective was to characterize the films to evaluate the possibility of interaction between UTR and LLDPE, if any.

• He along with his PI observed that these specially ground rubber possess enormous potential as a filler and effect the cure kinetic behavior of the epoxy resin. The resulting composites were demonstrated to have higher mechanical properties as compared with the epoxy composites without any rubber in it.

• Most important finding was the identification of stable free radicals present in these used tire rubber using electron paramagnetic resonance spectroscopy (EPR) which was utilized as a free radical source in his research with used tire rubber surface grafting with vinyl containing monomers.

CIVIL ENGINEERING (ASPHALT ARTS AND TECHNOLOGY SERVICES) He worked with a group of civil engineers where he provided them the autocatalyzed used tire rubber to be used in asphalt for pavement applicationSurface grafted recycled used tire rubber (SBR/ NR) and (nitrile rubber) with acrylic acid and did rheology testing on the asphalt-rubber binder for construction and pavement application.

Expert may consult nationally and internationally, and is also local to the following cities: Dallas, Texas - Fort Worth, Texas - Arlington, Texas - Plano, Texas - Garland, Texas - Irving, Texas - Grand Prairie, Texas - Mesquite, Texas - Waco, Texas - Carrollton, Texas

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Year Degree Subject Institution
Year: 2012 Degree: PhD Subject: Chemistry with specialization in Polymers, Rubber Chemistry, Organic synthesis and nanomateriall Institution: University of Texas at Dallas
Year: 2005 Degree: MS Subject: Organic Chemistry Institution: University of Delhi
Year: 2002 Degree: BS Subject: Applied Chemistry Institution: University of Delhi

Work History

Years Employer Title Department Responsibilities
Years: 2013 to Present Employer: Undisclosed Title: Postdoctoral research associate Department: Chemistry Responsibilities: His Project involved multitasking on various areas of the R&D. Also he was Involved with writing reports, proposals and initiate R&D projects, along with development and then giving a proper outcome to it
Project with Intel Corp.-
Development of electro-optic (EO) polymeric materials

He design and develops chromophore, donor and acceptor molecules blended to polymer systems; small molecules using organic synthesis
He is part of the research group that develops new strategies expected to design novel organic molecules that exhibits higher EO coefficient
Outline a long term project aimed at designing new polymer host organic molecules and discuss and present to the PI from Intel

Independent Projects-
He Initializes, develop and execute new project proposals for the development of fluoropolymer nanocomposites for high end applications by making use of electrospinning; blend formulations; and spin coating

Part-time lecturer for Organic Chemistry: As a part time lecturer he managed 133 students: His tasks included, preparing class notes, questionnaire’s for quizzes and tests and finally grade
Years: 2006 to 2010 Employer: University of Texas/ Clemson University Title: Research assistant/teaching assistant Department: Chemistry Responsibilities: Project with Lehigh Technologies LLC.
Leading cryogenically grounded recycled ground tire rubber (GTR) particles manufacturers
• He developed a recycling approach to utilize the recycled tire rubbers

• LLDPE films filled with 2.5 wt (%) and 5.0 wt (%) ground tire rubber (GTR) were extruded and provided by Lehigh. The objective was to characterize the films to evaluate the possibility of interaction between GTR and LLDPE, if any.

• He utilized these GTR as a filler material for composite formulations. The resulting composites have higher mechanical properties as compared with the epoxy based resin composites without any rubber in it. Other resins such as polyester resin were utilized as well for the research

•Most important finding during his research was the identification of stable free radicals present in these used tire rubber using electron paramagnetic resonance spectroscopy (EPR) which was utilized as a free radical source in his further research with used tire rubber surface chemical modification/grafting with vinyl containing monomers (acrylates) and F2 gas.
Years: 2005 to 2006 Employer: Dharampal Satyapal Pvt. Ltd Title: Chemist Department: R&D Responsibilities: He worked as a quanitative and qualitative chemist and tested various food based products

Career Accomplishments

Associations / Societies
ACS Rubber Division
ACS Polymer Division
Licenses / Certifications
Texas DMV
Awards / Recognition
• Co-winner of the Tech Titans of the Future Award
• Received Plaque from ACS Rubber Division Student Chapter
• 4-Travel Awards for the ACS Rubber Division & Polymer Conference
Publications and Patents Summary
3 peer reviewed publications; 1 peer reviewed magazine article; 1 co-authored book chapter;16 conference manuscripts

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