Stabilizing Polymeric Interface by Janus Nanosheet.
Stabilizing Polymeric Interface by Janus Nanosheet.
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DOI：
10.1002/marc.202000392
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发表时间：
2020-08
影响因子：
4.6
通讯作者：
Jipeng Guan;H. Gui;Yanyan Zheng;Jichun You;Yongjin Li;F. Liang;Zhenzhong Yang
中科院分区：
文献类型：
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作者：
Jipeng Guan;H. Gui;Yanyan Zheng;Jichun You;Yongjin Li;F. Liang;Zhenzhong Yang
提出了一种通过使用不规则 Janus 纳米片（JNS）来稳定聚合物界面的策略。选择60/40（wt/wt）的双连续结构聚偏二氟乙烯（PVDF）/聚（L-乳酸）（PLLA）作为模型熔融共混物，合成PMMA/环氧树脂JNS并用作增容剂。 JNS优先位于接口处。 JNS 的界面覆盖达到饱和状态，在 JNS 的 0.5 wt% 时形成互连干扰结构。界面因此稳定，在高温退火后得到良好的保存。选择性蚀刻 PLLA 后，得到坚固的 PVDF 多孔材料，并在孔骨架表面铠装 JNS。多孔材料提供了通用支架，以在填充孔后获得稳定的功能材料。
A strategy is proposed to stabilize the polymeric interface by using the irregular Janus nanosheet (JNS). The poly(vinylidene fluoride) (PVDF)/poly(l-lactic acid) (PLLA) at 60/40 (wt/wt) with a bi-continuous structure is selected as the model melt blend, and the PMMA/epoxy JNS is synthesized and used as the compatibilizer. The JNS is preferentially located at the interface. The interfacial coverage by the JNS reaches a saturated state forming the interconnected jamming structure at 0.5 wt% of the JNS. The interface is thus stabilized which is well preserved after annealing at high temperature. After selectively etching PLLA, the robust PVDF porous material is derived with the JNS armored at the pore skeleton surface. The porous material provides a universal scaffold to achieve stable functional materials after filling the pores.