PH INFLUENCE ON THE STRUCTURE AND DYNAMICS OF HYDRATED POLY(ACRYLIC ACID)/POLY(ETHYLENE OXIDE) BLENDS AS REVEALED BY ADVANCED SOLID-STATE NMR TECHNIQUES
Multiscale structure and dynamics of multiphase polymers have attracted tremendous attentions in the last decades, which generally controlled or tailored by different kinds of weak interactions among chains. The weak interaction among chains plays an important role in controlling the final properties of polymer and bio polymers. For example, hydrogen bonding interaction has been widely employed in preparing miscible polymer blends, layer-by-layer polymer films, self-assembled block copolymers, and functional polymer materials for adsorption and separation. Although various techniques including DSC, FTIR and NMR have been widely used, the characterization of the multiscale structured and dynamics, as well as the weak intra- and inter-chain interaction at a molecular level is still a challenging work. In this paper, the pH influence on different kinds of hydrogen bonding interactions, microdomain structure, heterogeneous dynamics, the location of different state of water and distribution of Na+ sites in hydrated poly(acrylic acid) (PAA)/poly(ethylene oxide) (PEO) blends were systematically investigated using a variety of advanced solid-state NMR (SSNMR) techniques developed recently.
Pingchuan Sun Peng Wang Zhi Yuan Tiehong Chen Qinghua Jin Datong Ding Qiang Wang An-Chang Shi
Key Laboratory of Functional Polymer Materials,Ministry of Education,College of Chemistry,College of Department of Chemical and Biological Engineering,Colorado State University,Fort Collins,Colorado 80 Department of Physics and Astronomy,McMaster University,Hamilton,Ontario L8S 4M1,Canada
国际会议
International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)
厦门
英文
29-30
2008-06-08（万方平台首次上网日期，不代表论文的发表时间）