Role of free volume in molecular mobility and performance of glassy polymers for corrosion-protective coatings

Hill, Anita J.; Thornton, Aaron W.; Hannink, R. H. J.; Moon, Joshua D.; Freeman, Benny D.

doi:10.1080/1478422x.2019.1701237

Cited by 13 publications

(7 citation statements)

References 141 publications

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“…Free volume permits the diffusion of small molecules such water, oxygen and ions. It also permits local segmental movement which affects mechanical properties such as adhesion, and yield [81].…”

Section: Applications In Coatings 421 Corrosion Preventionmentioning

confidence: 99%

Glassy Polymers—Diffusion, Sorption, Ageing and Applications

et al. 2021

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For the past few decades, researchers have been intrigued by glassy polymers, which have applications ranging from gas separations to corrosion protection to drug delivery systems. The techniques employed to examine the sorption and diffusion of small molecules in glassy polymers are the subject of this review. Diffusion models in glassy polymers are regulated by Fickian and non-Fickian diffusion, with non-Fickian diffusion being more prevalent. The characteristics of glassy polymers are determined by sorption isotherms, and different models have been proposed in the literature to explain sorption in glassy polymers over the last few years. This review also includes the applications of glassy polymers. Despite having many applications, current researchers still have difficulty in implementing coating challenges due to issues such as physical ageing, brittleness, etc., which are briefly discussed in the review.

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Section: Applications In Coatings 421 Corrosion Preventionmentioning

confidence: 99%

Glassy Polymers—Diffusion, Sorption, Ageing and Applications

et al. 2021

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show abstract

Section: Corrosion Preventionmentioning

confidence: 99%

Glassy Polymers – Diffusion, Sorption, Aging, and Applications

Arya¹,

Thapliyal²,

Sharma³

et al. 2021

Preprint

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For the past few decades, researchers have been intrigued with glassy polymers, which have applications ranging from gas separations to corrosion protection to drug delivery systems. The techniques employed to examine the sorption and diffusion of small molecules in glassy polymers are the subject of this review. Diffusion models in glassy polymers are regulated by Fickian and non-Fickian diffusion, with non-Fickian diffusion being more prevalent. The characteristics of glassy polymers are determined by sorption isotherms, and different models have been proposed in the literature to explain sorption in glassy polymers during the last few years. This review also includes the applications of glassy polymer. Despite having so many applications, current researchers still have difficulty in implementing coating challenges due to issues like as physical ageing, which is briefly discussed in the review.

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“…[ 12,13 ] During this process, the polymer partly loses its free volume over time and thereby changes its mechanical, physical, and transport properties. [ 8 ]…”

Section: Introductionmentioning

confidence: 99%

“…Glassy polymers are used in widespread applications such as amorphous pharmaceuticals, [1][2][3] organic semiconductors, [4][5][6] corrosion-protective coatings, [7,8] and membrane technology. [9][10][11] In contrast to rubbery polymers, they are in a thermodynamically nonequilibrium state.…”

mentioning

confidence: 99%

“…[12,13] During this process, the polymer partly loses its free volume over time and thereby changes its mechanical, physical, and transport properties. [8] Particularly in membrane applications, this is unwanted behavior. As the amount of free volume directly relates to the polymer's permeability, the permeance of a glassy polymer membrane strongly decreases over time.…”

mentioning

confidence: 99%

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Organosilica coating layer prevents aging of a polymer with intrinsic microporosity

Rubner

Stellmann

Mertens

et al. 2022

Plasma Processes & Polymers

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This study tracks the physical aging behavior of coated and uncoated ultra-thin poly(1-trimethylsilyl-1-propyne) (PTMSP) films on silicon wafers based on the refractive index using ellipsometry. The measured refractive index directly correlates with the free volume and hence the physical aging progression. Plasma-enhanced chemical vapor deposition (PECVD) creates coatings with different thicknesses and oxidation degrees onto PTMSP films. Compared to uncoated PTMSP films, the PECVD-coated films show a reduction of the refractive index increase of more than two orders of magnitude for less than 10 nm thin SiOx coatings. In contrast, SiOCH films show only a minor impact. The results reveal the superior physical aging behavior of PECVD-coated films compared to untreated PTMSP films.

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Role of free volume in molecular mobility and performance of glassy polymers for corrosion-protective coatings

Cited by 13 publications

References 141 publications

Glassy Polymers—Diffusion, Sorption, Ageing and Applications

Glassy Polymers—Diffusion, Sorption, Ageing and Applications

Glassy Polymers – Diffusion, Sorption, Aging, and Applications

Organosilica coating layer prevents aging of a polymer with intrinsic microporosity

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