Improving the barrier character of poly(caprolactone): Transport properties and free volume of immiscible blends

2019 ◽  
Vol 136 (40) ◽  
pp. 48018 ◽  
Author(s):  
Sorkunde Eceolaza ◽  
Ainara Sangroniz ◽  
Javier Río ◽  
Marian Iriarte ◽  
Agustin Etxeberria
Keyword(s):  
Transport Properties ◽  
Free Volume ◽  
Immiscible Blends ◽  
Poly Caprolactone

Blends based on biodegradable poly(caprolactone) with outstanding barrier properties for packaging applications: The role of free volume and interactions

2020 ◽  
Vol 135 ◽  
pp. 109869
Author(s):  
María Ángeles Corres ◽  
Álvaro Mayor ◽  
Ainara Sangroniz ◽  
Javier del Río ◽  
Marian Iriarte ◽  
...  
Keyword(s):  
Free Volume ◽  
Barrier Properties ◽  
Biodegradable Poly ◽  
Poly Caprolactone

Relationship between the gas transport properties and the refractive index in high-free-volume fluorine-containing polyimide membranes

2011 ◽  
Vol 121 (5) ◽  
pp. 2794-2803 ◽  
Author(s):  
Shuichi Sato ◽  
Takamasa Ose ◽  
Sou Miyata ◽  
Shinji Kanehashi ◽  
Hiroto Ito ◽  
...  
Keyword(s):  
Refractive Index ◽  
Transport Properties ◽  
Free Volume ◽  
Gas Transport ◽  
Gas Transport Properties ◽  
Polyimide Membranes

scholarly journals A Coupled Thermodynamic Model for Transport Properties of Thin Films during Physical Aging

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 387 ◽  
Author(s):  
Hongjiu Hu ◽  
Xiaoming Fan ◽  
Yaolong He
Keyword(s):  
Thin Films ◽  
Transport Properties ◽  
Free Volume ◽  
Physical Aging ◽  
Field Equations ◽  
Lattice Contraction ◽  
Strongly Coupled ◽  
Coupled Diffusion ◽  
Coupled Field Equations ◽  
Short Time

A coupled diffusion model based on continuum thermodynamics is developed to quantitatively describe the transport properties of glassy thin films during physical aging. The coupled field equations are then embodied and applied to simulate the transport behaviors of O2 and CO2 within aging polymeric membranes to validate the model and demonstrate the coupling phenomenon, respectively. It is found that due to the introduction of the concentration gradient, the proposed direct calculating method on permeability can produce relatively better consistency with the experimental results for various film thicknesses. In addition, by assuming that the free volume induced by lattice contraction is renewed upon CO2 exposure, the experimental permeability of O2 within Matrimid® thin film after short-time exposure to CO2 is well reproduced in this work. Remarkably, with the help of the validated straightforward permeability calculation method and free volume recovery mechanism, the permeability behavior of CO2 is also well elucidated, with the results implying that the transport process of CO2 and the variation of free volume are strongly coupled.

Free volume and transport properties of homogeneous poly(ethylene-co-octene)s

Polymer ◽  
2004 ◽  
Vol 45 (11) ◽  
pp. 3913-3922 ◽  
Author(s):  
B. Neway ◽  
Å. Westberg ◽  
A. Mattozzi ◽  
M.S. Hedenqvist ◽  
M.Giacinti Baschetti ◽  
...  
Keyword(s):  
Transport Properties ◽  
Free Volume ◽  
Poly Ethylene

Free volume and transport properties of heterogeneous poly(ethylene-co-octene)s

Polymer ◽  
2001 ◽  
Vol 42 (12) ◽  
pp. 5307-5319 ◽  
Author(s):  
B. Neway ◽  
M.S. Hedenqvist ◽  
V.B.F. Mathot ◽  
U.W. Gedde
Keyword(s):  
Transport Properties ◽  
Free Volume ◽  
Poly Ethylene
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