Inverse gas chromatography technology was applied to characterize the surface properties of cis-1,4-polybutadiene rubber synthesized by using neodymium catalyst. The dispersive components of free energy of two rubbers were 47. 18,46.61,46. 16,45. 99 and 45. 60mJ/m2,47. 12,46. 25, 45. 81,45. 65 and 44. 83 mJ/m2 at 30 ℃ , 40 ℃ , 50 ℃ , 60 ℃ and 70 ℃ , respectively. The results indicated that the Lewis acidic number κa of the rubbers was 0. 35 and basic number κb was 1. 8. This meant that the material was weak basic Lewis amphoteric polymer.%采用反相气相色谱技术分别在30℃、40℃、50℃、60℃、70℃温度下,对顺丁橡胶的表面色散自由能与表面Lewis酸碱性质进行测试.分别测得2种顺丁橡胶在给定温度下的表面色散自由能分别为47.18、46.61、46.16、45.99和45.60 mJ/m2；47.12、46.25、45.81、45.65和44.83 mJ/m2.结果表明,该聚丁二烯橡胶为Lewis弱碱性两性聚合物材料,其Lewis酸碱常数为k=0.35；碱常数kb=l.8.
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