Time-resolved spectroscopic and photographic studies on laser ablation of poly(methyl methacrylate) film doped with biphenyl

1995 ◽  
Vol 99 (2) ◽  
pp. 750-757 ◽  
Author(s):  
Hiroshi Fukumura ◽  
Ei-ichi Takahashi ◽  
Hiroshi Masuhara
Keyword(s):  
Laser Ablation ◽  
Methyl Methacrylate ◽  
Time Resolved ◽  
Poly Methyl Methacrylate ◽  
Photographic Studies

Time Resolved Measurements of Pyrolysis Products From Thermoplastic Poly-Methyl-Methacrylate (PMMA)

2009 ◽  
Author(s):  
Cory A. Kramer ◽  
Reza Loloee ◽  
Indrek S. Wichman ◽  
Ruby N. Ghosh
Keyword(s):  
Methyl Methacrylate ◽  
Exothermic Reaction ◽  
Quantitative Information ◽  
Co2 Production ◽  
Heating Chamber ◽  
Time Resolved ◽  
Poly Methyl Methacrylate ◽  
Quantitative Measurements ◽  
Ir Heating ◽  
Flaming Combustion

The goal of this research is to obtain quantitative information on chemical speciation over time during high temperature material thermal decomposition. The long term goal of the research will be to impact structural fire safety by developing a data base of characteristic “burn signatures” for combustible structural materials. In order to establish procedure and to generate data for benchmark materials, the first material tested in these preliminary tests is poly-methyl-methacrylate (PMMA). Material samples are heated in an infrared (IR) heating chamber until they undergo pyrolysis. Time resolved quantitative measurements of the exhaust species CO2, O2, HC, and CO were obtained. During heating the PMMA sample undergoes two distinct processes. First, pre-combustion pyrolysis is characterized by the appearance a peak in the THC signal between 600–650 °C. Secondly, at about 900 °C flaming combustion occurs as evidenced by an exothermic reaction reported by the thermocouples. The time sequence of the production of HC, O2 depletion and CO2 production are consistent with combustion in an excess-oxidizer environment.

Simulations of Laser Ablation of Poly(methyl methacrylate):  Fluence versus Number of Photons

2007 ◽  
Vol 111 (32) ◽  
pp. 12024-12030 ◽  
Author(s):  
Patrick F. Conforti ◽  
Manish Prasad ◽  
Barbara J. Garrison
Keyword(s):  
Laser Ablation ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate

IR laser ablation of doped poly(methyl methacrylate)

2007 ◽  
Vol 253 (15) ◽  
pp. 6442-6446 ◽  
Author(s):  
S. Gaspard ◽  
M. Oujja ◽  
E. Rebollar ◽  
M. Walczak ◽  
L. Díaz ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Ir Laser

Laser Ablation Dynamics of a Poly(methyl methacrylate) Film Doped with 5-Diazo Meldrum's Acid

1995 ◽  
Vol 99 (29) ◽  
pp. 11481-11488 ◽  
Author(s):  
Hisashi Fujiwara ◽  
Yoshinori Nakajima ◽  
Hiroshi Fukumura ◽  
Hiroshi Masuhara
Keyword(s):  
Laser Ablation ◽  
Methyl Methacrylate ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Poly Methyl Methacrylate
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