Brillouin scattering near the low‐temperature glass transitions of polymethyl methacrylate

1982 ◽  
Vol 76 (5) ◽  
pp. 2763-2764 ◽  
Author(s):  
E. Kato
Keyword(s):  
Low Temperature ◽  
Polymethyl Methacrylate ◽  
Brillouin Scattering ◽  
Glass Transitions

Creep of Polymethyl Methacrylate at Low Temperature

1954 ◽  
Vol 9 (3) ◽  
pp. 413-416 ◽  
Author(s):  
Koji Sato ◽  
Heinosuke Nakane ◽  
Teruo Hideshima ◽  
Shigeo Iwayanagi
Keyword(s):  
Low Temperature ◽  
Polymethyl Methacrylate

Glass Transitions in Polymer-Plasticizer Systems

1956 ◽  
Vol 29 (2) ◽  
pp. 492-503
Author(s):  
L. Breitman
Keyword(s):  
Low Temperature ◽  
Dibutyl Phthalate ◽  
Supercooled Liquids ◽  
Glass Transitions ◽  
Volume Increase ◽  
Temperature Coefficients ◽  
Dibutyl Sebacate ◽  
Apparent Activation Energies ◽  
Coefficient Of Viscosity ◽  
Polymer Interaction

Abstract A summary of the investigation with the three types of diluent can he made with reference to Table VI. Hydrocarbon oils are more effective low-temperature plasticizers the lower their temperature coefficient of viscosity. Dibutyl sebacate is representative of crystallizing diluents. Such compounds are ineffective low temperature plasticizers unless, (a) at equilibrium, favorable thermodynamic parameters permit their existence as liquids in the polymer, or (b) the plasticizers tend to exist as the nonequilibrium, supercooled, liquids in the transition temperature region of the polymer. Particularly desirable are liquids with low apparent activation energies of viscosity and high miscibility with polymer. The four ester plasticizers, tributoxyethyl phosphate, dibutyl phthalate, dioetyl adipate, and dioctyl sebacate, have temperature coefficients of viscosity corresponding to a virtually common activation energy of 4.5 kilocalories. Here, the magnitude of diluent-polymer interaction, as indicated by volume increase measurements, dictates the order of effectiveness of the ester.

Brillouin scattering and refractive index measurements on low temperature liquids. I. Methane, CH4 and CD4

1980 ◽  
Vol 48 (2) ◽  
pp. 183-191 ◽  
Author(s):  
A. Yoshihara ◽  
A. Anderson ◽  
R.A. Aziz ◽  
C.C. Lim
Keyword(s):  
Refractive Index ◽  
Low Temperature ◽  
Brillouin Scattering
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