So Pva and borax form a bond, when you convert the borax to boric acid it no longer has that bond.

If you add sodium bicarbonate than there is the same or a very similar bond almost like if the boric acid

got turned back into borax.   So whats the reaction with boric acid and sodium bicarbonate?

Borax is sodium borate so I would assume that mixing sodium bicarbonate and boric acid would give you sodium borate = borax (plus CO2).

I think that would happen if you added heat since "Sodium Borate + Heat + Sodium Bicarbonate" Reacts only with heat

although it would make sence but you could be wrong, If anyone knows for sure please reply.

 

Edited January 19, 20205 yr by SatanicSam

Heat will make it, but also if you dissolve both components in water.

Thank you so much that awnsers the question

Because it is disolved in water