Compatibilization of Immiscible Polymer Blends Using Graphene Oxide Sheets
Compatibilization of Immiscible Polymer Blends Using Graphene Oxide Sheets
复制标题
使用氧化石墨烯片实现不混溶聚合物共混物的增容
DOI：
10.1021/nn201717a
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发表时间：
2011-07-01
期刊：
影响因子：
17.1
通讯作者：
Wu, Peiyi
中科院分区：
文献类型：
--
作者：
Cao, Yewen;Zhang, Jing;Wu, Peiyi
通过利用氧化石墨烯片（6055）独特的两亲性结构，我们在这里开发了一种新的和有效的策略，用于增容不混溶聚合物共混物。在不混溶的聚酰胺/聚苯醚（PA/PPO，90/10）共混物中仅掺入0.5wt%的GOS，分散的次要相（PPO）的液滴直径显著减小超过1个数量级，表明GOS填充的聚合物共混物的相容性大大改善。因此，GOS相容的聚合物共混物的延展性显著提高。GOS的增容作用应该是由于GOS可以与PA和PPO相表现出强烈的相互作用，从而使它们的界面张力最小化。此外，与传统的共聚物相容剂不同，GOS还可以作为聚合物共混物的增强填料，从而显着提高其机械强度和热稳定性。考虑到廉价的来源（石墨粉）和非凡的性能的GOS，这项工作可能会打开机会，以生产新的相容剂，在工业领域的极大兴趣。
By taking the advantage of the unique amphiphilic structure of graphene oxide sheets (6055), we develop here a new and effective strategy for compatibilizing immiscible polymer blends. With the incorporation of only 0.5 wt % GOSs Into immiscible polyamide/polyphenylene oxide (PA/PPO, 90/10) blends, the droplet diameter of the dispersed minor phase (PPO) is dramatically reduced by more than 1 order of magnitude, indicating a largely improved compatibility in the GOS-filled polymer blends. As a result, the ductility of GOS-compatibilized polymer blends is notably elevated. The compatibilizing effect of GOSs should be due to the fact that GOSs can exhibit strong interactions with both PA and PPO phases, thus minimizing their interfacial tension. Moreover, unlike traditional copolymer compatibilizers, GOSs can also act as reinforcing fillers in polymer blends, thus remarkably enhancing their mechanical strength and thermal stability. Considering the inexpensive sources (graphite powders) and extraordinary properties of GOSs, this work may open up opportunities to produce new compatibilizers that are of great interest In the industrial field.