Influence of Rubbery versus Glassy Backbone Dynamics on Multiscale Transport in Polymer Membranes
Influence of Rubbery versus Glassy Backbone Dynamics on Multiscale Transport in Polymer Membranes
复制标题
橡胶状与玻璃状主链动力学对聚合物膜多尺度输运的影响
DOI:
10.1021/acs.macromol.8b01830
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发表时间:
2018
期刊:
影响因子:
5.5
通讯作者:
Geise, Geoffrey M.
中科院分区:
文献类型:
--
作者:
Chang, Kevin;Korovich, Andrew;Xue, Tianyi;Morris, William A.;Madsen, Louis A.;Geise, Geoffrey M.
To determine the effects of polymer backbone dynamics on water and salt permeation in water purification membranes, we investigate the fundamental transport and sorption properties of two series of chemically similar copolymers: methacrylate-based copolymers that are glassy at room temperature and acrylate-based copolymers that are rubbery at room temperature. Water diffusion measurements made as a function of diffusion time using pulsed-field-gradient NMR diffusometry provide information about hydrophilic network heterogeneity in the copolymers. These time-dependent measurements enable us to parse tortuosity into two regimes, the nanometer-to-bulk and micrometer-to-bulk ranges, enhancing insight into the influence of copolymer morphology on bulk transport. Combining NMR diffusometry and water and salt sorption and transport measurements, we find that the glassy methacrylate copolymers exhibit greater water–salt selectivity than the acrylate copolymers. These differences likely arise from sub-micrometer polymer morphological and dynamical differences, and we propose multiscale models for heterogeneities of the hydrophilic networks in these copolymers.
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影响因子:
4.2
作者:
Geoffrey M. Geise;C. Willis;C. Doherty;A. Hill;T. Bastow;Jamie T Ford;K. Winey;B. Freeman;D. R. Paul
通讯作者:
D. R. Paul
影响因子:
4.9
作者:
Lingwood, Mark D.;Zhang, Zhiyang;Madsen, Louis A.
通讯作者:
Madsen, Louis A.
DOI:
10.1021/i360039a015
发表时间:
1971
期刊:
Industrial & Engineering Chemistry Product Research and Development
影响因子:
--
作者:
S. G. Kimura
通讯作者:
S. G. Kimura
影响因子:
9.5
作者:
Geise, Geoffrey M.;Falcon, Linda P.;Paul, Donald R.
通讯作者:
Paul, Donald R.
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
Matsumoto;K.;Y.Matsumura;O.Onomura;O.Onomura;Toshio Masuda;Toshiki Kono;T.Masuda;T.Kono;Yosuke Taniguchi;Yuichi Shida;Toshikazu Sakaguchi;Toru Katsumata;Toshikazu Sakaguchi;Y.Taniguchi;Y.Shida;T.Sakaguchi;T.Katsumata;T.Masuda;T.Masuda;Toru Katsumata;Toshikazu Sakaguchi;Yosuke Taniguchi;Yuichi Shida;Yuichi Shida;Toshikazu Sakaguchi;Roy D.Raharjo;Y.Shida;T.Sakaguchi;R.D.Raharjo;Yuichi Shida;Toshikazu Sakaguchi;Roy D.Raharjo;Toshikazu Sakaguchi;Toshio Masuda
通讯作者:
Toshio Masuda