The glass transition temperature of glassy polymers using dynamic mechanical analysis
- BFGoodrich Co., Avon Lake, OH (United States)
Dynamic Mechanical Analysis (DMA) is presented for four glassy polymers. Poly(vinyl acetate), poly(vinyl chloride), poly(styrene), and poly(carbonate) were studied as a function of the heating rate using ramp and step heating programs and a constant frequency of 1 Hz. The effect of frequency on the dynamic mechanical parameters was also examined from 0.01 Hz to 10 Hz. The dynamic elastic storage modulus (E{double_prime}), the dynamic elastic loss modulus (E{double_prime}) and the tan{delta} (E{double_prime}/E{prime}) were affected by both the heating rate and the frequency. Apparent activation energies for the glass transition were also determined for the four polymers which were in the range from 98 of 194 kcal/mol.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 136475
- Report Number(s):
- CONF-930398-; ISSN 0066-0558; TRN: IM9552%%17
- Journal Information:
- American Society for Testing and Materials, Special Technical Publication, Journal Issue: 1249; Conference: American Society of Testing and Materials (ASTM) meeting on glass transition, Atlanta, GA (United States), 4-5 Mar 1993; Other Information: PBD: Sep 1994
- Country of Publication:
- United States
- Language:
- English
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