Effects of Glass Microfillers on the Water-Transport Behavior of Polyurethane Composites

Chuang, Tsu-Hwang; Yang, Thomas C.-K.; Chen, Tai-You; Chang, An-Hwa

doi:10.1080/00914030490461667

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…Generally, the water transportation activity depends on the molecular vibration of water and on the availability of free void volume within the polymer matrix. When high thermal energy is involved, both molecular vibration of water and free void volume of the polymer due to increased segmental motion, are prominently enhanced [27,32]. As a result, the diffusion coefficients for all systems studied increase with the environmental temperature as shown in Table 1.…”

Section: Transport Parameters Of Water Moleculesmentioning

confidence: 83%

“…Fickian model has been widely used for predicting the moisture diffusion in polymer composites [19,24,27,28]. Considering the barrier contribution of filler inclusions to the water transportation, Langmuirian solution with two exponential terms [29,30] has also been applied to study the absorption process in the composites filled with fiber or layered silicate.…”

Section: Transport Parameters Of Water Moleculesmentioning

confidence: 99%

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Water absorption and solubility of PHBHV/HA nanocomposites

Tang

Chen

Yue

et al. 2008

Composites Science and Technology

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Section: Transport Parameters Of Water Moleculesmentioning

confidence: 83%

Section: Transport Parameters Of Water Moleculesmentioning

confidence: 99%

Water absorption and solubility of PHBHV/HA nanocomposites

Tang

Chen

Yue

et al. 2008

Composites Science and Technology

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Restricted Equilibrium Swelling of n‐Alkanes Posed by Ginger Spent Filled Polyurethane Green Composites during Sorption, Desorption, Resorption, and Redesorption Processes

Chethana¹,

Siddaramaiah²

2016

Adv Polym Technol

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Polyurethane (PU) based green composites with varying amounts of ginger spent (GS) have been fabricated and characterized for swelling and molecular transport behaviors in n-alkane probe molecules. Sorption-desorption-resorptionredesorption (S-D-RS-RD) behaviors have been performed to determine the true factor for transport coefficient. Sorption results are obtained by a gravimetric method and diffusion coefficient (D) has been calculated using Fick's equation for the linear data points of time-dependent sorption/resorption curves. The observation was made that diffusion coefficient follows Fick's rule. Sorption studies have been carried out at 25, 40, and 60°C. A significant increase in sorption values has been noticed with raise in temperature. Sorption (S) and diffusion (D) coefficients of n-alkanes depend on GS content in PU matrix. From the temperature dependence of diffusion and permeation (P) coefficients, the Arrhenius activation parameters have been used to estimate activation parameters such as diffusion (E D ) and permeation (E P ). Thermodynamic parameters such as enthalpy ( H) and entropy ( S) have been interpreted for sorption/resorption results. The percentage weight change for desoption and redesorption processes has been recorded; these results depend on the volatility of the penetrant molecules. C

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