MA Man-zhen, Takeshi ENDO. PHOTOINITIATED CATIONIC COPOLYMERIZATION OF AN ALICYCLIC EPOXY COMPOUND AND A SPIROORTHOCARBONATE[J]. Acta Polymerica Sinica, 1991,(3):364-369.
MA Man-zhen, Takeshi ENDO. PHOTOINITIATED CATIONIC COPOLYMERIZATION OF AN ALICYCLIC EPOXY COMPOUND AND A SPIROORTHOCARBONATE[J]. Acta Polymerica Sinica, 1991,(3):364-369.DOI:
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-epoxycyc-lohexane carboxylate (ERL-4221). The test results show that the addtion of a small amount of SOC7 to ERL-4221 system results in suppressing shrinkage without significantly degrading the thermal properties. The proper mol ratio of ERL-4221 to SOC7 is 4:1. A crosslinked copoly-mer having Tg 230℃ and volume shrinkage below 4.4% on photocopolymerization is obtained. The elemental analysis
FT-IR and 1H-NMR spectra were shown respectively for characteri-zation of the photocopolymer.