By Thomas E. Munns, James C. Seferis (auth.), Julian F. Johnson, Philip S. Gill (eds.)
This quantity five in a continual sequence represents the compilation of papers awarded on the foreign Symposium on Analytical Calorimetry as a part of the 185th nationwide assembly of the yank Chemical Society, Seattle, Washington, March 20-25th. 1983. a wider number of subject matters are lined than in pre vious volumes, as a result development within the box of Thermal research. particular subject matters protecting such suggestions as differential scanning calorimetry, mixed thermogravimetric systems, dynamic mechan ical research and various novel kinetic analyses are coated. quite a lot of fabric kinds are integrated during this quantity similar to polymers (alloys, blends and composites), fossil fuels, organic items, liquid crystals and inorganic fabrics. The co-editors of this quantity want to thank the entire participants for his or her efforts in conforming to the manuscript necessities, and for being instructed within the education. we'd additionally prefer to thank those that presided over periods throughout the process the symposium; Professor Anselm C. Griffin, Professor Roger S. Porter and Dr. Edith A. Turi.
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Extra info for Analytical Calorimetry: Volume 5
In the closed pan configuration, Curve R, one notes the absence of the endotherm due to volatilization of water and a much lower Tg value, presumably indicating plasticization of PAM by water. The effects of drying the sample (1 hr. at 115°r. urves C and O. Removal of water is indicated by the weak volatilzation endotherm in (Curve C) and the increased TQ in Curve D. These observations i ndi cate the necessity of drying the polymer in order to obtain an accurate Tg value for PAM. PIERCED PAN CLOSED PAN (A) (B) o c z (C) (0) w I !
Thi sis fo 11 owed by T at 184° and a large endotherm due to one aspect of the thermal d~gradation of PAM. In the closed pan configuration, Curve R, one notes the absence of the endotherm due to volatilization of water and a much lower Tg value, presumably indicating plasticization of PAM by water. The effects of drying the sample (1 hr. at 115°r. urves C and O. Removal of water is indicated by the weak volatilzation endotherm in (Curve C) and the increased TQ in Curve D. These observations i ndi cate the necessity of drying the polymer in order to obtain an accurate Tg value for PAM.
PORTER ACKNOWLEDGEMENTS The authors wish to give thanks to Mr. H. Stuart for measuring the GPC. REFERENCES 1. 2. 3. 4. 5. M. Kotliar, J. Polym. , Macromol. , 16,367 (1981). J. Devaux, P. Godard and J. P. Eng. , 22,229 (1982). C. R. W. Barlow, J. Appl. Polym. , 22,2155 (1978). R. M. Mathai, J. Sci. Ind. , 33,178 (1974). M. Katliar, J. Polym. , Polym. Chem. l, 1157 ( 1973). CURIE TEMPERATURES OF THE ICTA CERTIFIED REFERENCE MATERIALS Paul D. S. National Bureau of Standards as GM-761)  provide an indication of the temperature at the sample position in a thermobalance through an apparent weight change as ferromagnetism disappears.