摘要
用毛细管流变仪研究了磺化摩尔分数为２．２７×１０－２的磺化聚苯乙烯的熔体流变性能．结果表明，聚苯乙烯磺化后熔体的假塑性增大，当温度从２２５℃升至２５５℃，其非牛顿指数从０．４６升至０．６８．在该温度范围内磺化聚苯乙烯熔体粘流活化能（平均约为１２６ｋＪ／ｍｏｌ）明显大于聚苯乙烯（９９．４ｋＪ／ｍ２）。
Rheological properties of sulfonated polystyrene ionomer have been studied by means of capillary rheometer.The results showed that sulfonated polystyrene melt possesed higher pseudo-plasticity than polystyrene.The non-Newtonian index of sulfonated polystyrene melt increased when temperature rose form 225℃ to 255℃.The higher flow activation energy for sulfonated polystyrene melt may be attributed to the hindered motion of its segments due to ionic crosslinking.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
1997年第1期50-53,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家教委博士点科研基金
马灿安教育基金
关键词
磺化聚苯乙烯
离聚体
流变性能
毛细管流变仪
sulfonated polystyrene ionomer, rheological properties, capillary rheometer, ionic crosslinking
