Porous Film Coating Enabled by Polyvinyl Pyrrolidone (PVP) for Enhanced Air Permeability of Fabrics: The Effect of PVP Molecule Weight and Dosage

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dc.contributor.author Jiang, Jiantang
dc.contributor.author Shen, Yifeng
dc.contributor.author Yu, Deyou
dc.contributor.author Yang, Tao
dc.contributor.author Wu, Minghua
dc.contributor.author Yang, Lei
dc.contributor.author Petrů, Michal
dc.date.accessioned 2021-04-22T07:55:00Z
dc.date.available 2021-04-22T07:55:00Z
dc.date.issued 2020
dc.identifier.uri https://dspace.tul.cz/handle/15240/159966
dc.identifier.uri https://www.mdpi.com/2073-4360/12/12/2961
dc.description.abstract This study developed a versatile and facile method for creating pores and tuning the porous structure in the polymer latex films by selectively etching the added functional polyvinyl pyrrolidone (PVP) molecules. The pore formed in the latex films had a similar morphology to that of PVP aggregation before etching. This observation promotes us to regulate the pore morphology that determines the film’s property, such as air permeability through varying the PVP molecule weight and dosage. To this end, the effects of PVP molecule weight and dosage on the pore formation were systematically studied. The results showed that the average pore size of porous film decreased from >10 μm to sub-micron (about 0.4 μm) as the molecular weight or the dosage of PVP increased. This was ascribed to the strong adsorption affinity of PVP molecule onto the latex particle surface, which further hindered the diffusion and self-assembly of PVP molecule. In addition, this interaction became much stronger when the higher molecule weight of PVP or the higher dosage of PVP was employed, leading to the decreased size of PVP aggregation, as well as the formed pores in the latex films. Furthermore, the addition of PVP had little effect on the color of coated fabric based on the results of CIE L*a*b* measurement. The proposed facile method can be used to improve the air permeability of coated fabrics. cs
dc.language.iso cs cs
dc.relation.ispartof Polymers 2020
dc.subject porous film cs
dc.subject morphology cs
dc.subject etching cs
dc.subject polyvinyl pyrrolidone cs
dc.subject air permeability cs
dc.title Porous Film Coating Enabled by Polyvinyl Pyrrolidone (PVP) for Enhanced Air Permeability of Fabrics: The Effect of PVP Molecule Weight and Dosage cs
dc.identifier.doi 10.3390/polym12122961
dc.publisher.city MDPI
local.access open access


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