Explore BrainMass

Hydrogen Bonding in Polymers With Alcohol Groups

I have attached 4 images for you to take a look at: 1) the chem structure of cellulose; 2) the chem structure of phenol-formaldehyde adhesive resin -- you will have to add NaOH to this structure since it is catalyzed with NaOH); 3) the chem structure of polymeric methylene diphenyl diisocyanate resin; and finally, 4) the chem structure of wood lignin.

What I am desperately and very simplistically trying to understand is which of these structures would have the greatest tendency for hydrogen bonding --- specifically creating H2O's or OH- and why???

For instance, in real world we see lignin and pMDI almost virtually water repellant so to speak ---- however, both pure cellulose and PF resin seem to have greater H+ bonding and tend to attract more water.

Can you take a stab at a really simple explanation for a simpleton like me. Ultimately, what are the major differences in these structures and what makes one more available for H bonding vs. another??

Happy holiday!



Solution Summary

The hydrogen bonding in polymers like phenol-formaldehyde resin, lignin and cellulose is discussed in detail with diagrams.