Stilbene and Other Aromatic Monomers

In addition to stilbene and 1,1-diphenylethylene, several other / -substituted styrenes, 75 and 76, have also been reported to undergo equimolar copolymerization with For the case where the 

Spontaneous copolymerization of stilbene-MA occurs in refluxing xylene mixtures to give insoluble product. This was the first case reported in the literature where two monomers, both of which are resistant to homopolymerization, could be combined and copolymerized to give equimolar copolymer. 

A number of additional studies have since shown that copolymerization of various mixtures of this monomer pair can also be achieved with standard free-radical initiatorsor ultraviolet radiationto obtain essentially 1 1 copolymer. 

Using both BPO and AIBN initiators and different solvents, rate data show that /m/15-stilbene is at least 1.5-2 times as reactive as the cw-stilbene toward the MA radical. Also, -stilbene is markedly less reactive 

No copolymerization of the /ran5-stilbene-MA mixture occurs when kept in the dark for 48 h. However, monomer mixtures in both acetone and THF slowly copolymerize on exposure to 3 500-A light at 0 or The 

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