Improves nanoparticle dispersion and polymer crystallization in polydefluoroethylene/POSS coatings.

A new study aims to improve nanoparticle dispersion and polymer crystallization in polydeflon/POSS coatings using tethydrofurans as a solvent aid.
the dispersion of nanoparticles has been limiting the performance of polymer nanocomposates and coatings. The main objective here is to improve the dispersion quality and overall performance of nanoparticles in polydeflon (PVDF)/polychloride low polysilicon (POSS) nanocomposective materials prepared by

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POSS is added to the PVDF/DMF solution at different concentrations. Based on morphological analysis, POSS (1 and 3 wt) with low to medium content shows good dispersion quality, but high content (5 and 10 wt%) POSS leads to the formation of large aggregates.
significant improvement in PVDF crystallization
in order to improve the dispersion quality of POSS, tyhydrofuran (THF) was used as a solvent aid. According to the results of differential scanning heat method (DSC), the improvement of POSS dispersion led to a significant increase in the crystallization of PVDF from 29.8 to 59.5%.
the addition of solvents also leads to higher hydrophobicity due to increased crystallization. Overall, the use of appropriate solvents can lead to better dispersion of nanoparticles, which can improve the performance of nanocomposed coatings.
the study was published in March 2020 in volume 140 of Organic Coatings Progress.
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