Reading PAGE

Peer Evaluation activity

Downloads 44
Views 21
Full text requests 4

Total impact ?

    Send a

    Jonathan has...

    Trusted 0
    Reviewed 0
    Emailed 0
    Shared/re-used 0
    Discussed 0
    Invited 0
    Collected 0

     

    This was brought to you by:

    block this user Jonathan Knowles

    Professor

    UCL

    Novel phosphate glasses with different amounts of TiO2 for biomedical applications Dissolution tests and proof of concept of fibre drawing

    Export to Mendeley

    The aim of this work was to develop a range of phosphate glasses having different solubilities and with suitable characteristics to be drawn into fibres. Three glasses with molar compositions 50P(2)O(5)-30CaO-9Na(2)O-3SiO(2)-3MgO-(5-x)K2O-xTiO(2) (x = 0, 2.5, 5) were prepared and characterized in terms of thermal properties, density and dissolution rate. The dissolution tests were conducted in bi-distilled water (pH 6.0 0.5), Tris-HCl (pH 7.4 0.1) and citric acid buffer solutions (pH 3.0 0.1) in order to study the influence of pH on the dissolution process.TiO2 had a stabilizing effect on the glass, causing an increase in the glass transition temperature and density and a decrease in the glass dissolution rate. Acidic medium was found to strongly enhance the glass dissolution. The pH decrease caused by the acidic degradation products and the consequent enhancement of the glass weight loss were attenuated with the TiO2 increase.The fabrication of glass fibres using a preform drawing approach was investigated. Control and versatility of the process are demonstrated through the production of several tens of meters of fibre with diameters ranging from 37 2 mu m up to 173 7 mu m. Preliminary analysis reveal pristine fibres, free of crystallization, showing adequate flexibility for prospective biomedical applications. (C) 2010 Elsevier B.V. All rights reserved.

    Oh la laClose

    Your session has expired but don’t worry, your message
    has been saved.Please log in and we’ll bring you back
    to this page. You’ll just need to click “Send”.

    Your evaluation is of great value to our authors and readers. Many thanks for your time.

    Review Close

    Short review
    Select a comment
    Select a grade
    You and the author
    Anonymity My review is anonymous( Log in  or  Register )
    publish
    Close

    When you're done, click "publish"

    Only blue fields are mandatory.

    Relation to the author*
    Overall Comment*
    Anonymity* My review is anonymous( Log in  or  Register )
     

    Focus & Objectives*

    Have the objectives and the central topic been clearly introduced?

    Novelty & Originality*

    Do you consider this work to be an interesting contribution to knowledge?

    Arrangement, Transition and Logic

    Are the different sections of this work well arranged and distributed?

    Methodology & Results

    Is the author's methodology relevant to both the objectives and the results?

    Data Settings & Figures

    Were tables and figures appropriate and well conceived?

    References and bibliography

    Is this work well documented and has the bibliography been properly established?

    Writing

    Is this work well written, checked and edited?

    Write Your Review (you can paste text as well)
    Please be civil and constructive. Thank you.


    Grade (optional, N/A by default)

    N/A 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
    Close

    Your mailing list is currently empty.
    It will build up as you send messages
    and links to your peers.

     No one besides you has access to this list.
    Close
    Enter the e-mail addresses of your recipients in the box below.  Note: Peer Evaluation will NOT store these email addresses   log in
    Your recipients

    Your message:

    Your email : Your email address will not be stored or shared with others.

    Your message has been sent.

    Description

    Title : Novel phosphate glasses with different amounts of TiO2 for biomedical applications Dissolution tests and proof of concept of fibre drawing
    Author(s) : C Vitale-Brovarone, G Novajra, D Milanese, J Lousteau, JC Knowles
    Abstract : The aim of this work was to develop a range of phosphate glasses having different solubilities and with suitable characteristics to be drawn into fibres. Three glasses with molar compositions 50P(2)O(5)-30CaO-9Na(2)O-3SiO(2)-3MgO-(5-x)K2O-xTiO(2) (x = 0, 2.5, 5) were prepared and characterized in terms of thermal properties, density and dissolution rate. The dissolution tests were conducted in bi-distilled water (pH 6.0 0.5), Tris-HCl (pH 7.4 0.1) and citric acid buffer solutions (pH 3.0 0.1) in order to study the influence of pH on the dissolution process.TiO2 had a stabilizing effect on the glass, causing an increase in the glass transition temperature and density and a decrease in the glass dissolution rate. Acidic medium was found to strongly enhance the glass dissolution. The pH decrease caused by the acidic degradation products and the consequent enhancement of the glass weight loss were attenuated with the TiO2 increase.The fabrication of glass fibres using a preform drawing approach was investigated. Control and versatility of the process are demonstrated through the production of several tens of meters of fibre with diameters ranging from 37 2 mu m up to 173 7 mu m. Preliminary analysis reveal pristine fibres, free of crystallization, showing adequate flexibility for prospective biomedical applications. (C) 2010 Elsevier B.V. All rights reserved.
    Keywords : phosphate glass, glass fibres, solubility, thermal analysis, density, controlled release glasses, vitro, mechanical properties, ion release, titanophosphate glasses, structural units, aqueous medium, nerve repair, titanium, behavior

    Subject : unspecified
    Area : Other
    Language : English
    Year : 2011

    Affiliations UCL
    Journal : Materials Science and Engineering C
    Volume : 31
    Issue : 2
    Publisher : ELSEVIER SCIENCE BV
    Pages : 434-442
    Url : http://discovery.ucl.ac.uk/1300036/

    Leave a comment

    This contribution has not been reviewed yet. review?

    You may receive the Trusted member label after :

    • Reviewing 10 uploads, whatever the media type.
    • Being trusted by 10 peers.
    • If you are blocked by 10 peers the "Trust label" will be suspended from your page. We encourage you to contact the administrator to contest the suspension.

    Does this seem fair to you? Please make your suggestions.

    Please select an affiliation to sign your evaluation:

    Cancel Evaluation Save

    Please select an affiliation:

    Cancel   Save

    Jonathan's Peer Evaluation activity

    Downloads 44
    Views 21
    Full text requests 4

    Jonathan has...

    Trusted 0
    Reviewed 0
    Emailed 0
    Shared/re-used 0
    Discussed 0
    Invited 0
    Collected 0
    Invite this peer to...
    Title
    Start date (dd/mm/aaaa)
    Location
    URL
    Message
    send
    Close

    Full Text request

    Your request will be sent.

    Please enter your email address to be notified
    when this article becomes available

    Your email


     
    Your email address will not be shared or spammed.