Effects of silica nanoparticle addition to the secondary coating of dual-coated optical fibers

Shiue, Jyh-Tzong; Matthewson, M. John; Stupak, P.R.; Rondinella, V.V.

doi:10.1016/j.actamat.2006.02.002

Cited by 13 publications

(9 citation statements)

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“…Knowledge of dissolution data is advantageous when new materials are synthesized by phase transformations . Furthermore, solubility data are useful in the synthesis of multifunctional, hierarchically porous silica/apatite composite , as well as the coating of optical fibers, or for the study of coarsening kinetics under hydrothermal conditions . Solubility data also proves useful in relation to the optimization of photocatalytic properties of titanium dioxide .…”

Section: Introductionmentioning

confidence: 99%

Studies of the Solubility of BaSO₄ Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Vogelsberger

Schmidt

2010

J. Phys. Chem. C

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Dissolution experiments are carried out with nanoparticles of barium sulfate in water. An unusual concentration-time behavior is observed. A concentration maximum is measured at the very beginning of the dissolution process. This maximum considerably exceeds the saturation concentration of bulk material. The maximum concentration is followed in time by a decrease of the concentration until the saturation concentration of the bulk material is obtained. This behavior is called kinetic size effect and it is a characteristic of nanoscale particles in general. The colloidal system can be modeled theoretically by thermodynamic and kinetic considerations that cover all processes which may occur in the system: nucleation, particle growth, Ostwald ripening, and dissolution of particles. It has been shown that only the outer surface of the particles is responsible for the dissolution kinetics; it is suggested that the surface of micropores yields no contribution. The dissolution curves observed experimentally follow from the model considerations. It is possible by comparison of experiment and theory to estimate the saturation concentration influenced by the ionic strength in the solution. This effect can be well described by the extended Debye-H€ uckel law. The measured numerical values of the saturation concentrations are found to be in the range of 4-14 μmol L -1 and therefore in the vicinity of the solubility product of BaSO 4 . The saturation activity at infinite dilution (I f 0) is a Ba ¥ = 2.43 ( 0.12 μmol L -1 and the thermodynamic solubility product is K L ¥ = 10 -11.23 . Furthermore, the model calculations provide the possibility to estimate the interfacial tension of the system nanoparticle-solution. The numerical value of 1.1 N m -1 is obtained. The error of the estimated interfacial tension is approximately as large as about 15%. This seems to be acceptable in view of a lack of reliable data in the literature. It is possible furthermore to calculate a kinetic rate constant for any changes that may occur in the colloidal system. The error of this rate constant, however, may be as large as a factor of 10.

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Section: Introductionmentioning

confidence: 99%

Studies of the Solubility of BaSO₄ Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Vogelsberger

Schmidt

2010

J. Phys. Chem. C

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“…In particular, it was required that the addition of CNC or GM did not worsen the adhesion characteristics of coatings for the actual using reason. Any particle or nanoparticle added to the coating would be expected to impact these properties and the system should behave as a true composite [57]. This experiment revealed that the adhesion strength of coatings with or without the addition of CNC/GM being practically at the same high level.…”

Section: Adhesion and Hardnessmentioning

confidence: 83%

Mechanical and Thermal Properties of Waterborne Polyurethane Coating Modified through One-Step Cellulose Nanocrystals/Graphene Materials Sols Method

Yang

Zhang³

et al. 2020

Coatings

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Developing multifunctional coatings with excellent mechanical and thermal properties is highly desirable for wood-based composite application. The recent development of waterborne coatings for wood products suggests that a promising thermosetting material needs to also have properties like low volatile organic contents (VOCs), hardness, and fast curing. The cellulose nanocrystals/graphene materials (CNC/GM) sols were prepared through the one-step method as the thermally conductive and reinforced modifier for preparing waterborne polyurethane (WPU) coatings. The influence of this modifier on the thermal and mechanical properties such as thermal conductivity, abrasion resistance, and adhesion of WPU coatings was investigated. The results indicated that adding CNC/GM sols increased the hardness, abrasion resistance, and thermal conductivity of the WPU coatings, and meanwhile maintained the coating adhesion at the highest grade (level 1). The highest abrasion resistance value of 0.023 g/100 r was obtained for the modified WPU coating when the addition of GM was 3%.

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“…Sandrock and coworkers developed a tunable refractive index nanolayered material using a co-extrusion process (8). Shiue et al coated optical fibers with a silica nanoparticle-polymer composite to improve the mechanical properties of the fibers (12). However, to our knowledge, the techniques have not been used in structural composites for the purpose of matching refractive indices of fibers and matrix for transparent composite applications.…”

Section: Our Approachmentioning

confidence: 99%

Measuring Stability and Security in Iraq

GROUND¹

2008

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Approved for public release; distribution is unlimited.ii REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY)August 2008 ARL-TR-4527 SPONSOR/MONITOR'S ACRONYM(S) 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES* Department of Physics, Virginia Tech, Blacksburg, VA 24060 ABSTRACTThe U.S. Army has a critical need for a lighter, more varied array of visibly transparent materials which are currently limited to a handful of polymers and ceramics. This limitation restricts the design of lightweight transparent laminates since only a narrow range of mechanical properties are available, and the proper design of these structures often relies on the engineer's ability to specify the acoustic impedance of each layer. Composite materials offer the ability to tailor mechanical properties but, due to scattering at multiple interfaces, are not typically transparent unless the refractive indices (RI) of composite constituents (e.g., glass fibers and polymer matrix) are well matched. In these cases, sufficient index matching exists over a relatively narrow temperature range since the matrix RI is highly temperature dependent. In this report, we demonstrate improved temperature performance in a model glass fiber-solvent composite by coating conventional micron-sized glass fibers with glass nanoparticles. After infiltration with a model matrix material, the nanoparticles provide an intermediate refractive index interphase that "smoothes" any step change in RI that develops between the matrix and glass fibers.15.

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Effects of silica nanoparticle addition to the secondary coating of dual-coated optical fibers

Cited by 13 publications

References 13 publications

Studies of the Solubility of BaSO₄ Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Studies of the Solubility of BaSO₄ Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Mechanical and Thermal Properties of Waterborne Polyurethane Coating Modified through One-Step Cellulose Nanocrystals/Graphene Materials Sols Method

Measuring Stability and Security in Iraq

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Effects of silica nanoparticle addition to the secondary coating of dual-coated optical fibers

Cited by 13 publications

References 13 publications

Studies of the Solubility of BaSO4 Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Studies of the Solubility of BaSO4 Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Mechanical and Thermal Properties of Waterborne Polyurethane Coating Modified through One-Step Cellulose Nanocrystals/Graphene Materials Sols Method

Measuring Stability and Security in Iraq

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Product

Resources

About

Studies of the Solubility of BaSO₄ Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity

Studies of the Solubility of BaSO₄ Nanoparticles in Water: Kinetic Size Effect, Solubility Product, and Influence of Microporosity