Laser Scanning Confocal Microscopy Coupled with Hydraulic Permeability Measurements for Elucidating Fluid Flow across Porous Materials: Application to Human Dentine

Williams, Christopher; Macpherson, Julie V.; Unwin, Patrick R.; Parkinson, Charles

doi:10.2116/analsci.24.437

Cited by 8 publications

(9 citation statements)

References 47 publications

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“…In accordance with scanning electron microscopy results [14], the porous structure in the interphase is formed and, hence, parameter P W Int is equal to the hydraulic permeability [15]. Here, the porous medium is modeled as a continuum, composite material and its structure is characterized by a minimum set of properties, namely the porosity (α S Int ), the hydraulic permeability (P W H ), which might be functions of position (architecture) and structural element orientation (anisotropy) F PE , F PHB .…”

Section: Transport Behavior Of Water In the Blend Of Phb With Hydrophsupporting

confidence: 82%

The Characterization of Novel Biodegradable Blends Based on Polyhydroxybutyrate

Pankova¹,

Shchegolikhin²,

Иорданский³

et al. 2011

ChChT

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The present paper focuses on the study of novel blends based on poly(3-hydroxybutyrate) (PHB) and polymers with different hydrophilicity (LDPE and PA). Polymer blends were produced from five ratios of PHB/LDPE in order to regulate the resistance to hydrolysis or (bio)degradation through the control of water permeability. The relation between the water transport and morphology (TEM data) shows the impact of polymer component ratio on the regulating water flux in a hydrophobic matrix. To elucidate the role of hydrophilicity of the second component presented in the PHB blends, we studied the PHB/PA blends where PA is the polyamide resin composed of statistical copolymer of hexamethyleneadipinate and ε-caprolactam in the ratio of 1:1. The complex of techniques including DCS and FTIRimaging (for T-scale) demonstrates the interaction between PHB and PA in the temperature ranges of crystallization and melting. The general approach based on Flory-Huggins equation is presented as the way for choosing the pairs of compatible or partly compatible polymers.

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Section: Transport Behavior Of Water In the Blend Of Phb With Hydrophsupporting

confidence: 82%

The Characterization of Novel Biodegradable Blends Based on Polyhydroxybutyrate

Pankova¹,

Shchegolikhin²,

Иорданский³

et al. 2011

ChChT

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show abstract

“…The points located in the vicinity of the intersection point of the above lines, at 600 < Z < 800 J/cm 3 , belong to the moderately hydrophilic polymers [13]. [28] are situated in the vicinity of the intersection point. The obtained data about 55 polymers with different hydrophilicity which have been collected from our work [14].…”

Section: General Approach In Framework Of Flory-huggins Theorymentioning

confidence: 99%

“…According to the results of scanning electron microscopy [20], the porous structure in the interphase is formed and, hence, parameter P W Int is equal to the hydraulic permeability [28]. Here the porous medium is modeled as a continuum, composite material and its structur e is characterized with a minimal set of properties, namely the porosity ( S Int ), the hydraulic permeability (P W H ), which might be functions of position (architecture) and structural element orientation (anisotropy) F PE , F PHB .…”

Section: Transport Behavior Of Water In Blend Of Phb With Hydrophobicmentioning

confidence: 99%

Biodegradable Blends Based on Polyhydroxybutyrate: Structure and Water Diffusion

Olkhov¹,

Markin²,

Kosenko³

et al. 2015

Vestn. Volgogr. gos. univ., Ser. 10. Innov. deiat.

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“…From scanning electron microscopy (SEM) results [14] , a porous structure in the interface PHB/PE is formed and, hence, parameter P W Int is equal to the hydraulic permeability [20] . Here, the porous medium is modeled as a continuum, composite material and its structure is characterized with a minimal set of properties, namely the porosity ( α S Int ), the hydraulic permeability (P W H ), which might be functions of position (architecture) and structural element orientation (anisotropy) F PE , F PHB .…”

Section: Transport Behavior Of Water In Blend Of Phb With Hydrophobicmentioning

confidence: 99%

“…(4) refl ects the movement of water through the porous area and usually referred to as the Darcy term [20] :…”

Section: Transport Behavior Of Water In Blend Of Phb With Hydrophobicmentioning

confidence: 99%

Water transport, FTIR, and morphology characterizations of novel biodegradable blends based on poly(3-hydroxybutyrate)

Щеголихин

Иорданский

Филатова

et al. 2011

Journal of Polymer Engineering

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This paper focuses on the study of novel blends based on poly(3-hydroxybutyrate) (PHB) and polymers with different hydrophilicity [polyethylene (PELD) and polyamide resin (PA548)]. Polymer blends were produced from fi ve ratios of PHB/PELD in an effort to regulate the resistance to hydrolysis or (bio)degradation through the control of water permeability. The relation between the water transport and morphology (TEM data) shows the impact of polymer component ratio on the regulating water fl ux in hydrophobic matrix. To elucidate the role of hydrophilicity of the second component in the PHB blends, we studied the PHB/PA blends where PA is the polyamide resin composed of statistical copolymer of hexamethyleneadipinate and ε -caprolactam in ratio 1:1. The complex of techniques including DCS and Fourier Transform Infrared (FTIR)-imaging (on the scale of temperature) indicates an interaction between PHB and PA in the temperature ranges of crystallization and melting. The general approach based on Flory-Huggins equation is presented as a way to choose pairs of compatible or partly compatible polymers. Blending PHB with PA could be a simple and effective method to design new matrices for drug delivery, while the same procedure applied to PHB-PELD system with better resistance again, hydrolysis and lower cost than parental PHB could be used as novel bioerodible packaging materials.

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Laser Scanning Confocal Microscopy Coupled with Hydraulic Permeability Measurements for Elucidating Fluid Flow across Porous Materials: Application to Human Dentine

Cited by 8 publications

References 47 publications

The Characterization of Novel Biodegradable Blends Based on Polyhydroxybutyrate

The Characterization of Novel Biodegradable Blends Based on Polyhydroxybutyrate

Biodegradable Blends Based on Polyhydroxybutyrate: Structure and Water Diffusion

Water transport, FTIR, and morphology characterizations of novel biodegradable blends based on poly(3-hydroxybutyrate)

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