| AN/AA共聚物热解反应表观活化能的计算 |
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| 引用本文： | 陈厚,刘军深,曲荣君,孙言志,王成国,蔡华苏.AN/AA共聚物热解反应表观活化能的计算[J].高分子材料科学与工程,2005,21(5):242-245. |
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| 作者姓名： | 陈厚 刘军深 曲荣君 孙言志 王成国 蔡华苏 |
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| 作者单位： | 烟台师范学院化学与材料科学学院,山东,烟台,264025;山东大学材料科学与工程学院,山东,济南,250061 |
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| 基金项目： | 国家高技术研究和发展项目（863-2002AA304130）,烟台师范学院自然科学基金项目（042920） |
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| 摘 要： | 采用差示扫描量热法，研究了丙烯腈（AN）／丙烯酸（AA）共聚物在空气中的低温热解反应，利用Kissinger方法，计算了AN／AA共聚物热解反应的表现活化能,讨论了不同聚合工艺对共聚物热解反应表现活化能的影响。结果表明，随混合溶剂中二甲基亚砜含量的增加，共聚物热解反应表现活化能增加；随共聚单体AA含量的增加，共聚物热解反应表现活化能降低；当AA与AN质量配比高于5／95后，共聚物热解反应表观活化能变化不大；随反应温度增加，共聚物热解反应表现活化能增加。
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| 关 键 词： | 丙烯腈 热解反应 表观活化能 |
| 文章编号： | 1000-7555（2005）05-0242-04 |
| 收稿时间： | 2004-12-21 |
| 修稿时间： | 2005-03-19 |
DETERMINATION OF APPARENT ACTIVATION ENERGY OF DEGRADATION OF ACRYLONITRILE/ACRYLIC ACID COPOLYMERS |
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| CHEN Hou,LIU Jun-shen,QU Rong-jun,SUN Yan-zhi,WANG Cheng-guo,CAI Hua-su.DETERMINATION OF APPARENT ACTIVATION ENERGY OF DEGRADATION OF ACRYLONITRILE/ACRYLIC ACID COPOLYMERS[J].Polymer Materials Science & Engineering,2005,21(5):242-245. |
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| Authors: | CHEN Hou LIU Jun-shen QU Rong-jun SUN Yan-zhi WANG Cheng-guo CAI Hua-su |
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| Abstract: | Differential scanning calorimetry results of the degradation of acrylonitrile/acrylic acid copolymer in air were presented. The apparent activation energy of degradation of copolymers was calculated using Kissinger method. Effect of copolymerization conditions on the apparent activation energy of copolymer was studied. It shows that with an increase of dimethyl sulfoxide concentration in solvent mixture , the degradation apparent activation energy increases rapidly. The apparent activation energy drops quickly with the comononer acrylic acid concentration rising, and such a change becomes less prominent as the mass ratio of acrylic acid/acrylonitrile goe,; beyond 5/95. The apparent activation energy also increases with the copolymerization temperature rising. |
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| Keywords: | acrylonitrile degradation apparent activation energy |
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