(358)Infra-red Analysis of m-, and p-Cresol

次夫, 武内; 健治, 倉谷

doi:10.1246/nikkashi1898.54.715

Cited by 2 publications

(2 citation statements)

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“…Aneurysms can be treated through replacement vascular grafts, as well as through stent grafts that combine a metal stent and a covering material. The stent graft has a problem of thrombus formation in a vessel due to the insufficient endothelialization [1]. In the regenerative medicine field, it is expected that the nanomaterials having specific functions are used for application of drug delivery systems and scaffolds [2].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Mechanical Properties of Dimpled PET Fiber Fabricated by Electrospinning Method

Tanaka

Kawasaki

Katayama

et al. 2018

MSF

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Insufficient endothelialization of stent grafts tends to cause a problem of thrombosis formation. Because the structure of nanofibers, generally defined as fibers with a diameter below 1 μm, resembles the structure of an extracellular matrix, nanofibers are applied to scaffolds for regenerative medicine. Using nanofibers as the covering material of the stent graft can be expected to solve the problem of the stent graft. Previous studies have shown that a porous scaffold offers better surfaces to anchor and culture endothelial cells than a nonporous scaffold. Therefore, fibers with nanoorder dimples are expected to promote endothelialization. As a method of forming the dimple shape on the surface of the PET fiber, there is a method utilizing a difference in the volatilization rate of the solvent in the high humidity environment in the electrospinning method. For practical application of the stent graft to artificial blood vessels, the mechanical properties of the dimpled PET fiber should be clarified. In this study, the mechanical properties of single nanofibers and nonwoven fabrics of PET fibers with dimples on their surface were evaluated by tensile test. By forming the dimple shape on the fiber surface, the tensile strength of single PET fibers with dimples was 90 % lower than that of single PET fibers with a smooth surface. In the fabrication process of nonwoven fabric, the addition of EG delayed the volatilization of the PET solution, and the fibers adhered to each other. The bonding between the fibers contributed to the tensile strength of the nonwoven fabric.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Mechanical Properties of Dimpled PET Fiber Fabricated by Electrospinning Method

Tanaka

Kawasaki

Katayama

et al. 2018

MSF

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“…Therefore, it is expected that a filter using this wave will realize a simple package structure. The Stonely wave 1,2) and shear-horizontal (SH) type boundary acoustic wave 3,4) are known as boundary acoustic waves. The Stonely wave mainly consists of a longitudinal wave (P) and a shear vertical wave (SV) components, and has a small electromechanical coupling factor (k 2 ).…”

Section: Introductionmentioning

confidence: 99%

RF Filter using Boundary Acoustic Wave

Kando

Yamamoto

Tochishita

et al. 2006

jjap

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In this paper, we report a new structure of a shear horizontal (SH) type boundary acoustic wave for cellular phone applications. Such a structure composed of electrodes with a low shear wave velocity between two materials, namely, the SiO 2 film/Au-electrode/LiNbO 3 substrate, is proposed. The ladder filter used in this paper had this structure. By changing the propagation angle of the acoustic wave, the electromechanical coupling factor k 2 range from 0 to 16% was obtained, as well as a normalized bandwidth range 0.67 to 1.85 fold as large as that of a 36 -46 Y-X LiTaO 3 leaky surface acoustic wave (LT-LSAW) filter. In addition, an excellent temperature coefficient of delay time (TCD ¼ 25 ppm/ C) and a large mutual coupling coefficient 12 (¼ 0:15) were also obtained.

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(358)Infra-red Analysis of m-, and p-Cresol

Cited by 2 publications

References 0 publications

Evaluation of Mechanical Properties of Dimpled PET Fiber Fabricated by Electrospinning Method

Evaluation of Mechanical Properties of Dimpled PET Fiber Fabricated by Electrospinning Method

RF Filter using Boundary Acoustic Wave

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