Water Vapor Sorption Properties of Polyethylene Terephthalate over a Wide Range of Humidity and Temperature

2017 ◽  
Vol 121 (8) ◽  
pp. 1953-1962 ◽  
Author(s):  
Florence Dubelley ◽  
Emilie Planes ◽  
Corine Bas ◽  
Emmanuelle Pons ◽  
Bernard Yrieix ◽  
...  
Keyword(s):  
Water Vapor ◽  
Polyethylene Terephthalate ◽  
Water Vapor Sorption ◽  
Sorption Properties ◽  
Vapor Sorption ◽  
Wide Range

scholarly journals Water Vapor Sorption Properties of Various Dried Milks and Wheys

1968 ◽  
Vol 51 (9) ◽  
pp. 1339-1344 ◽  
Author(s):  
E. Berlin ◽  
B.A. Anderson ◽  
M.J. Pallansch
Keyword(s):  
Water Vapor ◽  
Water Vapor Sorption ◽  
Sorption Properties ◽  
Vapor Sorption

scholarly journals A series of coordination polymers based on terphenyl tetracarboxylates and bis-pyridyl ligands with water vapor sorption properties

RSC Advances ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 975-984 ◽  
Author(s):  
Ling Li ◽  
Lei Lv ◽  
Ru-Dan Huang
Keyword(s):  
Water Vapor ◽  
Coordination Polymers ◽  
Water Vapor Sorption ◽  
Sorption Properties ◽  
Vapor Sorption ◽  
Pyridyl Ligands

Six new coordination polymers have been synthesized based on terphenyl tetracarboxylates (H4L1, H4L2) and bis-pyridyl ligands (bpfp, bpe and bpmp).

scholarly journals Water Vapor Sorption and Diffusivity in Bio-Based Poly(ethylene vanillate)—PEV

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 524
Author(s):  
Greta Giacobazzi ◽  
Claudio Gioia ◽  
Micaela Vannini ◽  
Paola Marchese ◽  
Valérie Guillard ◽  
...  
Keyword(s):  
Water Vapor ◽  
Relative Humidity ◽  
Sorption Isotherms ◽  
Sorption Process ◽  
Water Vapor Sorption ◽  
Gravimetric Analysis ◽  
Vapor Sorption ◽  
Wide Range ◽  
Poly Ethylene ◽  
Segmental Flexibility

The dynamic and equilibrium water vapor sorption properties of amorphous and highly crystalline poly(ethylene vanillate) (PEV) films were determined via gravimetric analysis, at 20 °C, over a wide range of relative humidity (0–95% RH). At low RH%, the dynamic of the sorption process obeys Fick’s law while at higher relative humidity it is characterized by a drift ascribable to non-Fickian relaxations. The non-Fickian relaxations, which are responsible for the incorporation of additional water, are correlated with the upturn of the sorption isotherms and simultaneously the hysteresis recorded between sorption and desorption cycles. The sorption isotherms of amorphous and highly crystalline PEV are arranged in the same concentration range of that of PET proving the similarity of the two polyesters. Water diffusion coefficients, whose determination from individual kinetic sorption/desorption curves required treatment with the Barens–Hopfenberg model, were demonstrated to be ≈10× higher for amorphous PEV compared to amorphous PET. Such a difference originates from the enhanced segmental flexibility of PEV chains.

Nitrogen, Hydrogen, Carbon Dioxide, and Water Vapor Sorption Properties of Three-Dimensional Graphene

2011 ◽  
Vol 56 (3) ◽  
pp. 642-645 ◽  
Author(s):  
Yi Wang ◽  
Cong Guan ◽  
Kean Wang ◽  
Chun Xian Guo ◽  
Chang Ming Li
Keyword(s):  
Carbon Dioxide ◽  
Water Vapor ◽  
Three Dimensional ◽  
Water Vapor Sorption ◽  
Sorption Properties ◽  
Vapor Sorption

Sorption Properties of Zeolite Y Modified by Controlled Deposition of Intracrystalline Coke

1992 ◽  
Vol 57 (5) ◽  
pp. 959-968 ◽  
Author(s):  
Michał Rozwadowski ◽  
Jerzy Włoch ◽  
Krzysztof Erdmann ◽  
Jan Kornatowski
Keyword(s):  
Water Vapor ◽  
Potential Theory ◽  
Zeolite Y ◽  
Sorption Isotherms ◽  
Methanol Conversion ◽  
Water Vapor Sorption ◽  
Sorption Properties ◽  
Vapor Sorption ◽  
Kinetic Measurements ◽  
Controlled Deposition

The possibility of zeolite Y modification by controlled deposition of coke during the process of methanol conversion was studied. It was found, that coke deposits lower the sorption capacity of the zeolite, which yields the possibility to obtain modified zeolite of definite sorption properties. The process of coking was analysed using the results of kinetic measurements, XRD, IR, TGA, and sorption-isotherms determination. The Polanyi-Dubinin potential theory was applied to describe the water-vapor sorption isotherms.

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