对称型双端过渡态丁二烯/苯乙烯嵌段共聚物的性能研究 |
Study on properties of symmetrical two-end tapered butadiene/styrene block copolymer |
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DOI: |
中文关键词: 丁二烯 苯乙烯 双锂引发剂 嵌段共聚物 动态性能 力学性能 |
英文关键词: butadiene styrene dilithium initiator block copolymer dynamic properties mechanical properties |
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中文摘要: |
采用以双卤代烷烃取代型双锂齐聚物为引发剂、环己烷为溶剂、丁二烯(B)、苯乙烯(S)单体一次加入的方法,合成了对称型双端过渡态丁二烯/苯乙烯嵌段共聚物S—(S/B)—B—(B/S)—S,并对其性能进行了研究。结果表明,对称型双端过渡态丁二烯/苯乙烯嵌段共聚物具有明显的海岛两相结构,嵌段共聚物存在两个玻璃化温度;随着单体配比(质量比)S/B的增大,嵌段共聚物的各项物理性能变化趋势不明显。 |
英文摘要: |
The mechanical properties of the symmet rical two-end tapered butadiene/styrene block copolymer initiated by the dilithium initiator were investigated.The results showed that the copolymer possessed remarkable sea-island two-phase structure and two glass transition temperatures;and with the increase of S/B ratio,the physical properties of copolymer changed randomly. |
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