I don't think I've ever heard of the Uniform Commercial Code applying to a matrimonial case.
I am a former federal and State prosecutor and have been handling criminal defense and personal injury cases for over 17 years. The above answer, and any follow up comments or emails, is for informational purposes only and not meant as legal advice.
The UCC comes up in divorce with security interests and bank transfer and collections when money involved in bank transactions is being divided. These are high net worth cases and often require specific expertise to resolve. On an ordinary couple divorce, you will not hear of it.