端羟基聚丁二烯(HTPB)热分解反应的研究

本文用热分析法、红外光谱法和气相色谱法研究了HTPB的热分解过程与裂解产物。HTPB热分解存在低温(高分子弱键降解和交联)和高温分解(主链断裂降解)两个阶段。这种反应机理可以统一以往的分岐。     

差示直接注入热函法测定聚合物的端羟值

A thermometric method in which the heat of reaction is used as a quantitative measure of terminal OH groups in polymers has been in routine use. We use DDIE to determine the terminal OH groups in polyglycol and telechelic polybutadienes by the acetylation reaction of perchloric acid with acetic anhydride. The result is in good agreement with that of chemical titration, thus showing high reliability of DDIE in polymer end-group determination.
The method takes less than 5 minutes to carry out. The advantages of DDIE are simplicity, speed and also a repeatability is good.