Promoting compatibilization effect of graphene oxide on immiscible PS/PVDF blend via water-assisted mixing extrusion
Promoting compatibilization effect of graphene oxide on immiscible PS/PVDF blend via water-assisted mixing extrusion
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水辅助混合挤出促进氧化石墨烯对不混溶PS/PVDF共混物的增容作用
DOI：
10.1016/j.compscitech.2017.07.005
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发表时间：
2017-09
影响因子：
9.1
通讯作者：
Wu Min
中科院分区：
文献类型：
--
作者：
Tong Jun;Huang Han-Xiong;Wu Min
采用一步法水辅助混炼挤出（WAME）工艺，将聚偏氟乙烯（PVDF）-氧化石墨烯（GO）悬浮液注入到聚苯乙烯（PS）/PVDF-GO共混物熔体中，制备了PS/PVDF-GO纳米复合材料。PS/PVDF-GO共混物纳米复合材料的细化的PVDF域和增加的断裂伸长率表明GO充当共混物的增容剂。GO的增容作用通过注入的水促进，因为它促进了在熔融混合期间PS相中的GO层向PS和PVDF相之间的界面的迁移。GO对PS/PVDF共混物的增容作用是由于GO表面的含氧基团与PVDF中的> CF 2基团之间以及GO层的基面与PS的苯环之间的良好界面相互作用以及空间位阻对PVDF微区聚结的抑制作用。GO层的增容和增强作用提高了PS/PVDF共混物的拉伸强度、杨氏模量、弹性模量和复数粘度。
Polystyrene/poly(vinylidene fluoride)-graphene oxide (PS/PVDF-GO) blend nanocomposites are prepared via injecting GO suspension into the blend melt during one-step water-assisted mixing extrusion (WAME). The fined PVDF domains and increased elongations at break for the PS/PVDF-GO blend nanocomposites demonstrate that the GO acts as a compatibilizer for the blend. The compatibilization effect of the GO is promoted by the injected water because it facilitates the migration of the GO layers in the PS phase to the interfaces between the PS and PVDF phases during melt mixing. The compatibilization effect of the GO on the PS/PVDF blend can be explained by good interfacial interactions between the oxygen-containing groups at the GO surface and the >CF2groups in the PVDF and between the basal planes of GO layers and the phenyl rings of PS, and the coalescence suppression effect of the PVDF domains due to the steric hindrance. The compatibilization and reinforcement effects of the GO layers increase the tensile strength, Young's modulus, elastic modulus and complex viscosity of the PS/PVDF blends.
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影响因子：
9.5
作者：
Shen, Bin;Zhai, Wentao;Zheng, Wenge
通讯作者：
Zheng, Wenge
影响因子：
15
作者：
Sinnokrot, MO;Valeev, EF;Sherrill, CD
通讯作者：
Sherrill, CD
使用氧化石墨烯片实现不混溶聚合物共混物的增容
影响因子：
17.1
作者：
Cao, Yewen;Zhang, Jing;Wu, Peiyi
通讯作者：
Wu, Peiyi
影响因子：
3.9
作者：
通讯作者：
--
影响因子：
--
作者：
BONDI, A
通讯作者：
BONDI, A