{"id":375,"date":"2016-10-17T09:56:50","date_gmt":"2016-10-17T07:56:50","guid":{"rendered":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/?p=375"},"modified":"2016-10-24T10:23:59","modified_gmt":"2016-10-24T08:23:59","slug":"talk-by-p-leube-november-2016","status":"publish","type":"post","link":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/2016\/10\/talk-by-p-leube-november-2016\/","title":{"rendered":"Talk by P. Leube at UL (29th November 2016)"},"content":{"rendered":"<div class=\"page\" title=\"Page 1\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<div class=\"page\" title=\"Page 1\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<h6>Characterization of the multiresponsive Poly(N,N-dimethylaminoethyl methacrylate) by spin probing EPR spectroscopy<\/h6>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"page\" title=\"Page 1\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p>The still rising number of publications dealing with stimuli-responsive polymers prove the high interest in such smart materials. Poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) exhibits thermo-, pH- and ionic strength responsive behavior in aqueous solutions, being a multiresponsive homopolymer [1]. The goal of this study is to under- stand, how the pH and ionic strength affect the thermoresponsivity of PDMAEMA.<\/p>\n<p><!--more--><\/p>\n<p>As main method the continuous wave electron paramagnetic resonance (cw-EPR) spectroscopy is used. Our group showed that this technique enables the detection of even nanoscale inhomogeneities in thermoresponsive polymer systems, using the spin probe approach [2].<\/p>\n<p>The shown data are results of a study on PDMAEMA in aqueous solution using the cw-EPR spectroscopy spin probe approach with different nitroxide radicals of different size and hydrophilicity. To investigate the change in the polymer behavior the mea- surements were done within a defined temperature range, at different pH and with and without the addition of sodium dihydrogenphosphate (SDPH).<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"page\" title=\"Page 1\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p>References<\/p>\n<ol>\n<li>Jun Gao, Guangqun Zhai, Yan Song, and Bibiao Jiang. Multidimensionally stimuli-responsive phase transition of aqueous solutions of poly((n,n-dimethylamino)ethyl methacrylate) and poly(n,n- dimethyl-n-(methacryloyl)ethyl ammonium butane sulfonate). Journal of Applied Polymer Science, 107(6):3548\u20133556, 2007.<\/li>\n<li>Dennis Kurzbach, Matthias J. N. Junk, and Dariush Hinderberger. Nanoscale inhomogeneities in thermoresponsive polymers. Macromolecular Rapid Communications, 34(2):119\u2013134, 2013.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<pre>Location: Leipzig University, Linnestr. 5, SR 218, 04103 Leipzig\r\nDate and time: 29.11.2016 at 3.30pm\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Characterization of the multiresponsive Poly(N,N-dimethylaminoethyl methacrylate) by spin probing EPR spectroscopy The still rising number of publications dealing &hellip; <a href=\"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/2016\/10\/talk-by-p-leube-november-2016\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Talk by P. Leube at UL (29th November 2016)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":4475,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[27,26],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/posts\/375"}],"collection":[{"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/users\/4475"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/comments?post=375"}],"version-history":[{"count":4,"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/posts\/375\/revisions"}],"predecessor-version":[{"id":459,"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/posts\/375\/revisions\/459"}],"wp:attachment":[{"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/media?parent=375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/categories?post=375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.urz.uni-halle.de\/irtgpolymers\/wp-json\/wp\/v2\/tags?post=375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}