A NEW STRATEGY TO CHARACTERIZE THE INTIMACY OF SEGMENT MIXING BY 1H SOLID-STATE NMR

摘要：

Chain compatibility in segmental level was investigated by a new strategy combining preparation of an isotopically enriched polymer blend with analysis by dipolar filter 1H solid-state NMR under fast magic angle spinning (MAS). The intimate segment mixing and interchain interaction in blends of deuterated polystyrene (PS-D)/hydrogenated poly (2,6-dimethy 1-1,4-phenylene oxide) (PPO) were then qualitatively characterized and compared with that in PS-H/PS-D blends. It was found that in solution cast films, the PS-D chain is in close proximity to the aromatic protons of PPO within 0.5 nm, as shown in Figure 1a. microphase separations occurs in the melting blend shown in Figure 1b and 1c, although the melting-treated blend shows only one glass transition in Figure 2.

作者: Xiaoliang Wang Qiang Gu Pingchuan Sun Gi Xue

作者单位: Department of Polymer Science and Engineering,Nanjing University,Nanjing 210093,P.R.China Key Laboratory of Functional Polymer Materials,Ministry of Education,Nankai University,Tianjin,30007

会议类型: 国际会议

会议名称: International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)

会议地点: 厦门

会议语种:英文

页码: 359-360

在线出版日期: 2008-06-08（万方平台首次上网日期，不代表论文的发表时间）