| dc.contributor.author | Harkal, Umesh Deepak | |
| dc.description.abstract | The goal of the research presented in this dissertation was to design and
synthesize novel glycidyl carbamate (GC) resins for low VOC applications and study the
structure property relationships of their coatings. Primarily GC resins are synthesized
using aliphatic polyisocyanate resins such as biuret and isocyanurate of hexamethylene
diisocyanate. Polyisocyanate based GC resins had extremely high viscosity. Biuret
glycidyl carbamate (BGC) resin was modified by replacing part of the glycidol with
alcohols. The alcohol composition and the extent of alcohol composition in the resin were
systematically varied. The alcohol modification reduced the resin viscosity dramatically.
Performance of amine and self-crosslinked GC coatings was studied.
GC resins were synthesized for binder systems for flexible primer applications
using diisocyanates and combinations of linear diols and a triol. The diisocyanates, diols
and triol were used to obtain GC resins. Flexibility and barrier properties of the amine
crosslinked coatings were influenced by the composition of the GC resins.
Water dispersible GC resins were synthesized for low or zero VOC waterborne
coating applications. Non-ionic hydrophilic group, methoxy poly(ethylene glycol)
(mPEG), was incorporated into the resin structure. Molecular weight and mol % of
mPEG in the resin was systematically varied. Waterborne GC coatings were prepared
using water-based amine crosslinker and properties of the cured coatings were studied. UV curable GC resins were made by reacting BGC, isocyanurate glycidyl
carbamate (IGC), and alcohol modified IGC resins with acrylic acid. UV curable coating
formulations were prepared using reactive diluents, a photoinitiator, and an amine coinitiator.
Real-time FTIR (RTIR) was used to determine the degree of double bond
conversion in UV curing. The performance of the UV cured coatings was studied.
Finally, air drying (autoxidizable) GC resin (BGC-LOFA) was obtained by
reacting BGC resin with linseed oil fatty acid (LOFA). Air drying GC coatings were
obtained using common driers used for alkyd-based coatings. | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | en_US |
| dc.title | Low VOC Coating Systems From Novel Glycidyl Carbamate Resins | en_US |
| dc.type | Dissertation | en_US |
| dc.date.accessioned | 2024-03-07T22:08:45Z | |
| dc.date.available | 2024-03-07T22:08:45Z | |
| dc.date.issued | 2010 | |
| dc.identifier.uri | https://hdl.handle.net/10365/33718 | |
| dc.subject.lcsh | Epoxy resins. | en_US |
| dc.subject.lcsh | Crosslinked polymers. | en_US |
| dc.subject.lcsh | Volatile organic compounds. | en_US |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | en_US |
| ndsu.degree | Doctor of Philosophy (PhD) | en_US |
| ndsu.college | Science and Mathematics | en_US |
| ndsu.department | Coatings and Polymeric Materials | en_US |
| ndsu.program | Coatings and Polymeric Materials | en_US |
| ndsu.advisor | Webster, Dean C. | |
