Biomolecules 03 00461 g004

Saturated Polyesters


Cover imageTo get an in-depth understanding of the structure–property relationship in saturated polyester resins, the reactivity of various diols and diacids as well as reaction conditions were studied. Adipic acid (AA), phthalic anhydride (PA), isophthalic acid (IPA), terephthalic acid (TPA), 2-butyl-2-ethyl-1, 3-propanediol (BEPD) and 2, 2-dimethyl-1, 3-propanediol (NPG) were addressed. It was found that in addition to linear oligomers with carboxyl and/or hydroxyl end groups cyclic oligomers were detected. Cyclic dimers of TPA and NPG are known to migrate to the coating surface causing “blooming”. The understanding of this phenomenon and the monomers capable of forming cyclic dimers are the subject of this study, where we combined molecular modeling and analytical characterization. The probability of the formation of macrocyclic structures was shown to decrease in the order: BEPD–PA>BEPD–AA≥BEPD–IPA>BEPD–TPA. The temperature dependence was found to be small.

Keywords

  • Cyclic oligomers;
  • Saturated polyesters;
  • Molecular modeling


Share this article





Related Posts


Textile design Companies
Textile design Companies
Website design wallpaper
Website design wallpaper
Wallpaper Designer online
Wallpaper Designer online

Latest Posts
Knitted Textiles
Knitted Textiles
Application for this course is through…
Buy holographic fabric
Buy holographic…
Comparing two recently released Tinker…
Buy Brocade Fabrics Online
Buy Brocade Fabrics…
You can return this product for a refund…
Viscose allergy
Viscose allergy
You may need to take extra care when…
What is weaving process?
What is weaving…
What is weaving? Weaving is a type of…
Search
Featured posts
  • Textile design Companies
  • Website design wallpaper
  • Wallpaper Designer online
  • Fabric Printing designs
  • Textile design books
  • Printing designs on fabric
  • Design for cloth painting
  • Fabric designers
  • Design your own patterns
Copyright © 2021 l www.xinlongtex.com. All rights reserved.