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


Orange Lycra fabric
Orange Lycra fabric
Amazing fabric
Amazing fabric

Latest Posts
Polyester Suppliers
Polyester Suppliers
Polyester webbing slings are usually…
Silk by the metre
Silk by the metre
Silk is one of the most popular fabrics…
About textile industry In India
About textile…
India’s textiles sector is one of the…
Viscose elastane fabric UK
Viscose elastane…
54 inch wide 65% viscose, 35% linen mix…
Name of Fabrics with pictures
Name of Fabrics…
I finally finished my very first quilt…
Search
Featured posts
  • Orange Lycra fabric
  • Amazing fabric
  • How to weave fabric on a loom?
  • Textiles Fabrics
  • Sourcing Fabrics
  • What is camel hair fabric called?
  • Minecraft fabric UK
  • Fabric terminology
  • Fabrics for Fashion
Copyright © 2018 l www.xinlongtex.com. All rights reserved.