REINFORCEMENT OF POLYMER INTERFACES WITH RANDOM COPOLYMERS
REINFORCEMENT OF POLYMER INTERFACES WITH RANDOM COPOLYMERS
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DOI：
10.1103/physrevlett.73.2472
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发表时间：
1994-10-31
影响因子：
8.6
通讯作者：
JELINSKI, LW
中科院分区：
文献类型：
--
作者：
DAI, CA;DAIR, BJ;JELINSKI, LW
我们证明了长无规共聚物(单体分数f=0.48)在加强不相容均聚物之间的界面方面比长对称嵌段共聚物更有效。推测无规共聚物的有效性是由于每个随机共聚物多次穿过界面，与界面两侧的均聚物缠绕；当f从0.48增加到0.77时，随着共聚物与界面一侧的均聚物(对应于共聚物中的次要组分)的缠绕变得较少，有效性显著降低。
We demonstrate that long random copolymers (monomer fraction f = 0.48) can be more effective than a long symmetric block copolymer in strengthening interfaces between immiscible homopolymers. The effectiveness of the random copolymer is inferred to result from each random copolymer crossing the interface multiple times, entangling with the homopolymer on either side of the interface; as f is increased from 0.48 to 0.77, the effectiveness decreases markedly as the copolymer becomes less entangled with the homopolymer (corresponding to the minor component in the copolymer) on one side of the interface.