high performance Plasticizer Archives-HB Chemical

  • high performance Plasticizer Archives-HB Chemical
  • high performance Plasticizer Archives-HB Chemical
  • high performance Plasticizer Archives-HB Chemical
  • Which plasticizer is the most efficient?
  • Glycerol was the most efficient of the six plasticizers, explained by it forming the least amount of hydrogen bonds, having the shortest hydrogen bond lifetimes and low molecular rigidity. Hence, not only was it possible to rank plasticizers, the ranking results could also be explained by the simulations.
  • Are glycerol and ethanolamine more effective plasticizers?
  • When the mechanical properties were examined (elastic modulus and tensile strength), both the simulations and the experiments ranked glycerol and the two ethanolamines as more effective plasticizers than the other three (glucose, sorbitol, and xylitol).
  • How does a plasticizer affect a polymer?
  • In the gel theory the polymer is considered as a gel with noncovalent attraction points (governed by e.g. van der Waals forces and hydrogen bonds) located along adjacent chains, and the main effect of the plasticizer addition is to push/move the attraction points further apart to increase mobility in the polymer system.
  • Why do biopolymers need plasticizers?
  • Virgin biopolymers are often brittle and therefore need the addition of plasticizers to obtain the required mechanical properties for practical applications, for example, in bags and disposable kitchen items.
  • How many hydroxyl groups are used to plasticize polar polymers?
  • To reveal the effect of the number of hydroxyl groups on the plasticizer, three “linear” sugar molecules where chosen: glycerol, sorbitol, and xylitol with three, five, and six hydroxyl groups, respectively. Especially glycerol and sorbitol have been used extensively to plasticize a large number of different polar polymers.
  • Does glycerol increase hydrogen bonds between starch and plasticizer?
  • The number of hydrogen bonds between starch and plasticizer increased in most systems with increasing plasticizer content and was lowest for glycerol and glucose ( Figure 7 b). The only plasticizer deviating strongly from these trends was glucose, which will be discussed later.

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