This is very much a basic question about chemistry. The proton and electrons of an unactivated CH are unlikely to react under normal conditions. This may have been inferred from the formation of halides from an unactivated alkane by free radical chemistry.
Although I agree with Disco's suggestion to use an acid, I don't think the equilibrium favors formation of a carbocation under normal conditions. That does not necessarily mean there are not or may not be any proton-electron interactions, but that if they form, the reverse reaction is favored. Therefore, if one wishes to break a C-C bond, one might use a combination including heat or light to destabilize the bond or polymer/catalyst. I am not an expert in this chemistry, but I found the polystyrene can be thermally cracked. I would think the chemistry associated with cracking would apply here. Again, as I recall, heat or heat and Lewis acids are used to crack hydrocarbons. The use of a Lewis acid would sustain Disco's suggestion the electrons may interact with an acid, though the interaction is weak, but when combined with heat are sufficient to be productive in breaking bonds.