4 years ago

Synthesis and characterization of fatty acid modified amines with improved water barrier properties

Synthesis and characterization of fatty acid modified amines with improved water barrier properties
Fundamental studies aimed at elucidating the key contributions to corrosion performance are needed to make progress toward effective and environmentally compliant corrosion control. Epoxy/amine systems are typically employed as barrier coatings for corrosion control, however, the curing agents used for coating applications can be very complex, making fundamental studies of water and oxygen permeability challenging to carry out. Creating model building blocks for epoxy/amine coatings is the first step in carrying out these studies. This work demonstrates the synthesis and characterization of model amine building blocks from saturated fatty acids and diethylenetriamine (DETA) with tunable hydrophobicity. The glass transition temperature (Tg ) of modified amine samples suffered a 45–50°C Tg reduction, which has been attributed to a loss of labile hydrogens available for crosslinking in these samples. It was observed that the fatty acid modified amines exhibited a reduced diffusivity to water of up to 50%. This has been attributed to the increased tortuosity of samples with a pendant aliphatic chain in the network. Samples with modified amines were observed to have lower solubility of water (S) of up to 30%. We propose that the reduction in S can be caused by a dilution of oxygen in the polymer network due to the addition of aliphatic pendant chains.

Publisher URL: www.sciencedirect.com/science

DOI: S001430571730191X

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.