Effect of Structural Difference of Photoinitiator on Photocopolymerization of an Alicyclic Epoxy Compound and a Spiroorthocarbonate
Titel:
Effect of Structural Difference of Photoinitiator on Photocopolymerization of an Alicyclic Epoxy Compound and a Spiroorthocarbonate
Auteur:
Manzhen, M. A.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 18 (1992) nr. 3-4 pagina's 189-195
Jaar:
1992-11-01
Inhoud:
This article describes the photoinitiated cationic copolymerization of 1,6,8,13-tetraoxaspiro [7,7] tridecanes (SOC7), unconstrictive monomer, and 3,4-epoxycyclohexylmethyl 3',4'-epoxycyclohexane carboxylate (ERL-4221). With four photoinitiators-Bis[4-(diphenylsulfonio) alkyl phenyl] sulfide-Bishexafluoroantimonate (sp-170), Bis[4-(diphenylsulfonio) alkyl phenyl] Sulfide-Bishexafluorophosphite (sp-150), Benzoloxyphenylbenzylmethyl sulfonium hexafluoroantimonate (BBS) and p-hydroxyphenyl benzyl methyl sulfonium hexafluoroantimonate (PHS). The effect of photoinitiator type on the photocuring rate have been discussed. The test results show the sp-170 is the most efficient photoinitiator. The Tg as might be expected is independent of photoinitiator type, but results indicates that Tg increased with the irradiation time.
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