Designing greener plasticizers: Effects of alkyl chain length and
In this study, we modified the side chains of maleate diesters to be linear (i.e., unbranched) alkyl chains that varied in length from ethyl to n-octyl. The plasticization efficiency of these compounds blended into PVC at 29 wt.% increased with the overall length of the molecule, but all compounds performed as well as or better than comparable samples with DEHP.
Designing greener plasticizers: Effects of alkyl chain length and
Designing greener plasticizers: Effects of alkyl chain length and branching on the biodegradation of maleate based plasticizers The ubiquitous presence of the plasticizer di (2-ethylhexyl) phthalate (DEHP) in the environment is of concern due to negative biological effects associated with it and its metabolites.
Designing green plasticizers: influence of alkyl chain length on
Designing green plasticizers: influence of alkyl chain length on biodegradation and plasticization properties of succinate based plasticizers Phthalate diesters such as di (2-ethylhexyl) phthalate (DEHP) are considered ubiquitous contaminants and are poorly biodegraded in the environment.
Designing greener plasticizers: Effects of alkyl chain length and
Earlier work had identified the diester di (2-ethylhexyl) maleate (DEHM) as a potential greener candidate plasticizer to replace DEHP, yet its biodegradation rate was reported to be slow. In this study, we modified the side chains of maleate diesters to be linear (i.e., unbranched) alkyl chains that varied in length from ethyl to n-octyl.
Designing greener plasticizers: Effects of alkyl chain length and
Designing greener plasticizers: Effects of alkyl chain length and branching on the biodegradation of maleate based plasticizers DOI: 10.1016/j.chemosphere.2015.04.014 Source...
- Does alkyl chain length affect thermal and mechanical properties of plasticized PVC?
- The effect of varying alkyl chain length of isosorbide diesters on thermal and mechanical properties of plasticized PVCs was studied systematically. It was found that the content of carbonyl groups and the molecular weight of the isosorbide diester were the two controlling factors on plasticizing PVC.
- How does size affect the performance of plasticizer candidates?
- The performance of the plasticizer candidates improved with increasing size, from the smallest compounds (C2 side chains) to the dihexyl compounds (C6 side chains), and then decreased slightly for the longest molecules (C8 side chains).
- Can maleate plasticizers replace phthalate-based plasticizer?
- Overall, it was shown that in terms of Tg reduction and biodegradation, maleate plasticizers have the potential to substitute phthalate-based plasticizers by changing the side chains from branched to straight aliphatic chains.
- What are plasticizers & how do they work?
- Plasticizers are typically relatively small molecules that are incorporated into polymeric materials in order to increase the workability, flexibility, or distensibility of the matrix polymer .
- Are oligo adipate & isosorbide dihexanoate plasticizers suitable alternative PVC plasticizer?
- Yin and Hakkarainen have investigated the effect of oligo (isosorbide adipate) (OSA), oligo (isosorbide suberate) and isosorbide dihexanoate (SDH) plasticizers on the thermo-mechanical properties of plasticized PVC, and they found that all the synthesized isosorbide plasticizers showed the potential as alternative PVC plasticizers.
- Can plasticizers be biodegraded?
- Biodegradation experiments of the pure plasticizers were done with the common soil bacterium R. rhodocrous, which is known to be able to degrade a wide range of hydrophobic, organic compounds ( Jones and Goodfellow, 2012 ).
