Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser
This study explored the kinetics of ultraviolet (UV) laser photoinitiated polymerization in thick polymer systems to achieve improved polymerization efficiency and uniformity. The modeling system comprised an incident UV laser and its reflecting beam, which was focused by a concave mirror to compens...
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Online Access: | http://www.mdpi.com/2073-4360/6/5/1489 |
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doaj-f91562b626da4f6f86fc194d8a8928b72020-11-24T23:15:42ZengMDPI AGPolymers2073-43602014-05-01651489150110.3390/polym6051489polym6051489Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV LaserJui-Teng Lin0Hsia-Wei Liu1Da-Chuan Cheng2New Vision Inc., 5F, No. 27, Lane 10, Jiuquan St., Taipei 103, TaiwanDepartment of Life Science, Fu Jen Catholic University, New Taipei City 24205, TaiwanDepartment of Biomedical Imaging and Radiological Science, China Medical University, Taichung 404, TaiwanThis study explored the kinetics of ultraviolet (UV) laser photoinitiated polymerization in thick polymer systems to achieve improved polymerization efficiency and uniformity. The modeling system comprised an incident UV laser and its reflecting beam, which was focused by a concave mirror to compensate for the exponential decay in the absorbing medium. The polymerization kinetic equation was numerically solved for the initiator concentration. The crossover time was calculated and compared among single beam, two collimated beam and collimated plus reflecting focused-beam systems. For the single beam case, analytic formulas for the time dependent incident beam is derived and demonstrated by measured data. A theoretical crossover time is defined to analyze the measured data based on the dynamic moduli. Lastly, the polymerization boundary dynamics are illustrated, showing the advantage of the combined two beam system. The numerical results provide useful guidance and a novel means for accelerated uniform photo-polymerization, which cannot be achieved by other means.http://www.mdpi.com/2073-4360/6/5/1489modelingpolymerizationphotoinitiationUV lasercrossover time |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jui-Teng Lin Hsia-Wei Liu Da-Chuan Cheng |
spellingShingle |
Jui-Teng Lin Hsia-Wei Liu Da-Chuan Cheng Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser Polymers modeling polymerization photoinitiation UV laser crossover time |
author_facet |
Jui-Teng Lin Hsia-Wei Liu Da-Chuan Cheng |
author_sort |
Jui-Teng Lin |
title |
Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser |
title_short |
Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser |
title_full |
Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser |
title_fullStr |
Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser |
title_full_unstemmed |
Modeling the Kinetics of Enhanced Photo-Polymerization under a Collimated and a Reflecting Focused UV Laser |
title_sort |
modeling the kinetics of enhanced photo-polymerization under a collimated and a reflecting focused uv laser |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2014-05-01 |
description |
This study explored the kinetics of ultraviolet (UV) laser photoinitiated polymerization in thick polymer systems to achieve improved polymerization efficiency and uniformity. The modeling system comprised an incident UV laser and its reflecting beam, which was focused by a concave mirror to compensate for the exponential decay in the absorbing medium. The polymerization kinetic equation was numerically solved for the initiator concentration. The crossover time was calculated and compared among single beam, two collimated beam and collimated plus reflecting focused-beam systems. For the single beam case, analytic formulas for the time dependent incident beam is derived and demonstrated by measured data. A theoretical crossover time is defined to analyze the measured data based on the dynamic moduli. Lastly, the polymerization boundary dynamics are illustrated, showing the advantage of the combined two beam system. The numerical results provide useful guidance and a novel means for accelerated uniform photo-polymerization, which cannot be achieved by other means. |
topic |
modeling polymerization photoinitiation UV laser crossover time |
url |
http://www.mdpi.com/2073-4360/6/5/1489 |
work_keys_str_mv |
AT juitenglin modelingthekineticsofenhancedphotopolymerizationunderacollimatedandareflectingfocuseduvlaser AT hsiaweiliu modelingthekineticsofenhancedphotopolymerizationunderacollimatedandareflectingfocuseduvlaser AT dachuancheng modelingthekineticsofenhancedphotopolymerizationunderacollimatedandareflectingfocuseduvlaser |
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