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Introduction
Dr. Prakash Trivedi received his M.Sc.
form UDCT, University of Bombay and Ph.D. from Institute of Polymer
Science, University of Akron, Ohio, USA.
He has worked as a research scientist in
research laboratories of Firestone in Akron, IPCL in Vadodara, NOCIL,
Rishiroop Polymers and Apar Oil in Bombay. He is involved with Gharda
Chemicals Ltd. Bombay & Panoli, Gujarat for over a decade as Head of
Strategic Business Unit of Polymers, where he has helped develop and
commercialized four Specialty Plastics - Polyether sulfone (PES),
Polysulfone (PSU), Polyphenyl Sulfone (PPSU) and Polyether Ether
Ketone (PEEK) as well as their compounds. For these development,
Gharda Polymer Division has received two Plasticon awards for product
development, two ICMA Sir P.C.Ray Awards for indigenous technology
development and one FICCI award for reseach in Science & Technology.
Dr. Trivedi is professionally involved as
a member in Indian Plastics Institute, American Chemical Society,
Society of Plastics Engineers, Color Society of India and others. He
is a past chairman of Bombay Chapter of IPI and has been in the
Governing counsel of IPI for many years. At present, he is Chairman of
Distant Education Committee of IPI.
He has more than 50 publications and
presentations in International Journals and Conferences and holds 4
USA, 1 UK, 1 European & 1 Indian patents. He is a co-inventor of
Gharda PEEK Process for which further patents are pending in Europe
and USA.
Dr. Trivedi is active in education of
plastics, being a referee for Master's and Ph.D. thesis in UICT,
Mumbai and was K.S.S. Raghavan Chemical Weekly Visiting Professor
there in 2003.
He is a coauthor of PVC Technology and has
also published four books of fiction in Gujarati about Indians in USA.
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SPECIALTY POLYMERS
GAFONE™ PES
GAFONE™-S PSU
GAFONE™-P PPSU
GAFONE™PEEK
Thermoplastics Pyramid
Trends in Medical Device Industry
- Portability & Sterilizability
- Design & Miniaturization
- Quality and Performance
- Favorable Cost Economics
- Functional and Safety Requirements
- Rapidly Changing Patient Care Culture
- Replacing Metals & Conventional Materials.
Polysulfones
| TYPE |
R
|
Tg °C |
| POLYSULFONE PSU |
 |
185 |
| POLYETHER SULFONE
PES |
220 |
| POLYPHENYL SULFONE
PPSO |
220 |
Why Polysulfones ?
- Outstanding Thermal Resistance
- Outstanding Chemical/solvent Resistance
- Excellent Strength/Mechanical Properties
- Extraordinary Impact properties of
PPSU.
- Excellent Radiation Resistance
- Resistance to Pressurized Steam
- Repeated Sterilizability by Autoclaving, Ethylene
oxide and Gamma Radiation
- Overall Good Processibility
- Non-Toxic, FDA Approved.
Properties of GAFONE-PES/PSU/PPSU
- Amber Colored Amorphous Polymer
- High Thermal Stability
- Very Good Chemical Resistance
- Excellent Mechanical Properties over a wide
Temperature Range
- Excellent Resistance to Hydrolysis
- High Dimensional Stability
- Good Transparency/Lighter than Metals.
Why PEEK
- High temperature resistant (CUT 260 deg C)
- High strength & modulus . (Bone like Modulus)
- Can be reinforced with Carbon Fibre & Glass Fibre for obtaing extraordinary strength & modulus.
- Radio lucent or Radio plaque
- Superior Chemical Resistance
- Self lubricating nature
- Outstanding Fatigue Performance
- Excellent wear and Impact performance.
- Resistant to hydrolysis & ionizing radiations
- Resistance to repeated sterilization processes using conventional steam, gamma, and ethylene oxide
- Can be processed thru’ conventional Injection & Extrusion process.
- Readily machinable from stock shapes
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