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Selected Thermodyamic Properties of
Poly Methyl Methacrylate
a.k.a. PMMA, acrylic, Plexyglas, and many others

Formula Molecular wt
[C6H10On]n 114.14
 
Coefficients for the Regression Equation
rdot = a Goxn
rdot (in/sec)
Gox (lbm/sqin-sec)
p.s. sorry i don't currently recall the sources, only the data, if requested, I will find them. -hg 
Coefficient Source 1 Source 2 Source 3
a 0.0440 0.0412 0.0608
n 0.60 0.70 0.61
 
 
 
Source
Property Symbol Hung Karabeyoglu Wooldridge Units
Molecular Weight MW 100.0 - - g/gmol
Specific Heat (gas) CP 0.35

0.35

0.37

-

-

-

cal/g-K

Btu/lbm-R

Specific Heat (solid) CP 0.31

0.31

-

-

-

-

cal/g-K

Btu/g-K

Heat of Formation ho -928

-1670

-

-

-

-

cal/g

Btu/lbm

Latent Heat of Gasification LV 130

234

231

-

350

-

cal/g

Btu/lbm

Latent Heat of Fustion LF 85

155

-

-

-

-

cal/g

Btu/lbm

Boiling Point B.P. 374

673.2

-

-

-

-

K

Density rhoS 1.683

150

1.1

-

-

-

g/cm3

lbm/ft3

Thermal Diffusivity kappa - 0.11 - mm2/sec
Thermal Conductivity kS 0.0012

0.289

-

-

-

-

cal/sec-cm-K

Btu/hr-ft-R

References:

Hung, et. al., "Further Analytical Study of Hybrid Rocket Combustion", NASI-10210, 1972.

Karabeyoglu, et. al., "Transient Combustion in Hybrid Rockets," AIAA 95-2691, 1995.

Wooldridge, et. at., "Internal Ballistic Considerations in Hybrid Rocket Design," J. Spacecraft, Feb. 1967.