Chemical Journal of Chinese Universities-chinese | VOL. 35
Read
Flavone/Tertiary Amine as Free Radical Photoinitiator for UV Photopolymerization of Tripropylene Glycol Diacrylate(TPGDA)
Abstract
The polymerization kinetics of tripropylene glycol diacrylate(TPGDA) was monitored by real time near infrared(RTIR) with favone(FL) as photosensitizer and different hydrogen donor as coinitiator.The commercial photosensitizer benzophenone(BP) was used as control.The results showed that the molar extinction coefficient(e max) of FL was much higher than that of BP.When FL was used in combination with tertiary amine hydrogen donor ethyl 4-N,N'-dimethylaminobenzoate(EDAB),the rate of polymerization(R p) and final double bond conversion(DC f) could reach 0.58 s-1and 97%,respectively,which was very close to that of commercial BP / EDAB system.However,using sesamin(SM) and benzodioxole(BDO) as coinitiator for FL,the R p and DC f were both very low,which indicated that the excited FL and tertiary amine could generate aminoalkyl free radical species via electron / proton transfer process and initiate the efficient photopolymerization of TPGDA.More importantly,when the co-polymerizable tertiary amines such as EBERYL P115 and dimethylaminoethyl methacrylate(DMEM) are used,the natural component characteristics of FL make it a promising photoinitiator in biomedical and food-packaging fields.
Concepts
Tripropylene Glycol Diacrylate Real Time Near Infrared Benzophenone Dimethylaminoethyl Methacrylate Sesamin Benzodioxole Free Radical Free Radical Photoinitiator Tripropylene Glycol UV Photopolymerization
Introducing Weekly Round-ups!Beta
Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.
Climate change Research Articles published between Jan 23, 2023 to Jan 29, 2023
Climate change adaptation has shifted from a single-dimension to an integrative approach that aligns with vulnerability and resilience concepts. Adapt...
Read MoreDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.