scholarly journals ION RELEASE BEHAVIOR OF SILICOPHOSPHATE GLASSES CONTAINING SIX-FOLD COORDINATED SILICON STRUCTURE

2022 ◽  
Vol 38 (0) ◽  
pp. 1-4
Author(s):  
Atsuhiro Miura ◽  
Akiko Obata ◽  
Toshihiro Kasuga
Keyword(s):  
Release Behavior ◽  
Silicon Structure ◽  
Ion Release ◽  
Silicophosphate Glasses

Study on Preparation and Anodic Oxidation of Gradient Porous NiTi Alloy

2012 ◽  
Vol 430-432 ◽  
pp. 1373-1377
Author(s):  
Qiang Li ◽  
Jing Yuan Yu ◽  
Xu Dong Sun
Keyword(s):  
Anodic Oxidation ◽  
Niti Alloy ◽  
Surface Film ◽  
Powder Metallurgy Method ◽  
Release Behavior ◽  
Ion Release ◽  
Gradient Distribution ◽  
Niti Alloys ◽  
Porous Niti ◽  
Oxidation Technology

Gradient porous NiTi alloys were prepared by powder metallurgy method using NH4HCO3 as space-holder and modified by direct current-pulse anodic oxidation technology in low temperature. Pore characteristic and phase composition of gradient porous NiTi alloys were studied. Microstructure, composition, anti-corrosion and Ni ion release behavior of surface film were observed. The results show the porosity of porous NiTi alloys decreases from 53.2% to 42.8%, when the content of NH4HCO3 varying from uniformity to gradient distribution. The sintered gradient porous NiTi alloys composes with TiNi, Ti2Ni and TiNi3 phases. After anodic oxidation, Ti oxidation film with the thick of 240nm was formed on the gradient porous NiTi alloy. The corrosion resistance of gradient porous NiTi alloy was obviously improved and the rate of Ni release was significantly reduced.

Preparation and cupric ion release behavior of Cu/LDPE porous composites with tunable pore morphology for intrauterine devices

2013 ◽  
Vol 33 (5) ◽  
pp. 2800-2807 ◽  
Author(s):  
Lian Xiao ◽  
Xianping Xia ◽  
Changsheng Xie ◽  
Man Ge ◽  
Cheng Xiao ◽  
...  
Keyword(s):  
Pore Morphology ◽  
Release Behavior ◽  
Intrauterine Devices ◽  
Ion Release ◽  
Cupric Ion ◽  
Porous Composites

scholarly journals Different zeolite systems for colon cancer therapy: monitoring of ion release, cytotoxicity and drug release behavior

2019 ◽  
Vol 8 (2) ◽  
pp. 101-113 ◽  
Author(s):  
A. G. Abd-Elsatar ◽  
M. M. Farag ◽  
H. F. Youssef ◽  
S. A. Salih ◽  
M. M. Mounier ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Cancer Therapy ◽  
Drug Release ◽  
Therapy Monitoring ◽  
Release Behavior ◽  
Ion Release ◽  
Drug Release Behavior

Controlled Ion Release Property of Glass Ionomer Cement Containing Nanoporous Silica Particles

2016 ◽  
Vol 720 ◽  
pp. 17-20
Author(s):  
Ko Nakanishi ◽  
Yosuke Bando ◽  
Tomohiko Katsurayama ◽  
Shino Morimoto ◽  
Shigeaki Abe ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Silica Particles ◽  
Nanoporous Silica ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Release Behavior ◽  
Ion Release ◽  
Dye Release ◽  
Release Property ◽  
Ionomer Cement

Controlled ion release property of nanoporous silica particles (NPS) were investigated using cationic fluorescent dye, rhodamine B. The dye was charged into a glass ionomer cements (GIC) pellet containing the particles and then the pellet were immersed into distilled water. The dye-release behavior was observed using a UV-vis. spectrophotometer. GIC containing NPS can release the dye for a couple of weeks, where as other samples released it only a few days. This result suggests that NPS has excellent sustained dye-release property.

Corrosion and ion release behavior of ultra-fine grained bulk pure copper fabricated by ECAP in Hanks solution as potential biomaterial for contraception

2010 ◽  
Vol 64 (4) ◽  
pp. 524-527 ◽  
Author(s):  
X.X. Xu ◽  
F.L. Nie ◽  
J.X. Zhang ◽  
W. Zheng ◽  
Y.F. Zheng ◽  
...  
Keyword(s):  
Pure Copper ◽  
Release Behavior ◽  
Ion Release ◽  
Fine Grained

Structural Evolution and Copper-Ion Release Behavior of Cu-pHEMA Hybrids Synthesized In Situ

2009 ◽  
Vol 11 (11) ◽  
pp. B219-B226 ◽  
Author(s):  
Yen-Yu Liu ◽  
Tsan-Hua Tung ◽  
Kun-Ho Liu ◽  
San-Yuan Chen ◽  
Dean-Mo Liu
Keyword(s):  
Copper Ion ◽  
Structural Evolution ◽  
Release Behavior ◽  
Ion Release

Structure of CaO-SrO-TiO2-P2O5 Glasses and their Ion-Releasing Abilities in Tris Buffer Solution

2010 ◽  
Vol 89-91 ◽  
pp. 342-346
Author(s):  
Sung Ho Lee ◽  
Akiko Obata ◽  
Toshihiro Kasuga
Keyword(s):  
Bone Resorption ◽  
Tris Buffer ◽  
Release Behavior ◽  
Ion Release ◽  
Buffer Solution ◽  
Laser Raman ◽  
Laser Raman Spectra ◽  
Phosphate Groups ◽  
Tris Buffer Solution ◽  
Enhance Bone Formation

SrO-containing calcium phosphate invert glasses, (60-x)CaO∙xSrO∙30P2O5∙7Na2O∙3TiO2 (mol%, x = 0 ~ 60), which are expected to inhibit bone resorption by osteoclast and enhance bone formation, were prepared and estimated in their ion release behavior in Tris buffer solution. The glasses gradually released ions and the dissolved amounts of ions were the smallest when the glass contained 20 mol% of SrO. Laser Raman spectra showed that the peaks of phosphate groups and TiOy polyhedral groups red-shifted with increasing the SrO content in the glasses. The red-shift is suggested to be due to decrease in bonding strength between cations and phosphate groups or TiOy polyhedral groups in the glasses. In the case of the glasses containing SrO over 20 mol%, no Raman peaks of TiOy polyhedral shifted. TiOy (y = 4 or 6) polyhedral in the glasses can coordinate with cation up to 18 mol% since they contain 3 mol% of TiO2. Sr2+ ions are supposed to preferentially coordinate with TiOy polyhedral, the formation of this structure would induce the decrease in the ion amounts released from the glasses containing 0 ~ 20 mol% of SrO.

Sign in / Sign up

Export Citation Format

Share Document