Optimizing the Crystallinity and Phase Separation of PTB7:PC71BM Films by Modified Graphene Oxide

2018 ◽  
Vol 122 (5) ◽  
pp. 2572-2581 ◽  
Author(s):  
Cheng-Kun Lv ◽  
Fei Zheng ◽  
Xiao-Yu Yang ◽  
Peng-Qing Bi ◽  
Meng-Si Niu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Phase Separation ◽  
Modified Graphene Oxide ◽  
Modified Graphene

A novel PVdF-based composite gel polymer electrolyte doped with ionomer modified graphene oxide

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 97338-97345 ◽  
Author(s):  
Weili Li ◽  
Zhengbao Zhu ◽  
Wenjun Shen ◽  
Jijun Tang ◽  
Gang Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Phase Separation ◽  
Polymer Electrolyte ◽  
Gel Polymer Electrolyte ◽  
Separation Technique ◽  
Conducting Channel ◽  
Composite Gel ◽  
Modified Graphene Oxide ◽  
Ion Conducting ◽  
Modified Graphene

A novel composite gel polymer electrolyte (CGPE) was prepared by doping ionomer-modified-graphene (IMGO) into poly(vinylidenefluoride) with a phase separation technique. IMGO can enhance the properties of CGPE due to the effect of the ion-conducting channel.

scholarly journals The Compatibilization Effects of Alkylated-grafted-Graphene Oxide on Polypropylene/Polystyrene Blends

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Yanping Hao ◽  
Xin Zhao ◽  
Jie Dong ◽  
Qinghua Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Phase Separation ◽  
Interfacial Region ◽  
Melt Mixing ◽  
Modified Graphene Oxide ◽  
Preferential Location ◽  
Modified Graphene ◽  
Mixing Sequence

Modified graphene oxide (GO) was synthesized by covalently grafted alkylated chains on GO sheets and their compatibilization effects on the morphologies and mechanical properties of immiscible polypropylene/polystyrene (PP/PS) blends were investigated. Alkylated-grafted-GO/PP/PS batches were fabricated by melt-mixing approach and displayed different morphologies with various modified GO loadings. When the content of alkylated-grafted-GO is 0.2 wt%, the tensile strength of obtained composite could reach 17.97 MPa, showing a 36.3% enhancement compared to that of pristine PP/PS, indicating the positive compatibilization of modified GO in polymer blends. Moreover, the mixing order also plays an important role in achieving the desired improvement in properties. Due to the preferential location of modified GO in PP phase, a favorable “transition zone” could be formed at the interfacial region of two polymers when alkylated-grafted-GO was premixed with PS and subsequently mixed with PP, leading to an improvement of compatibilization between two polymers and an enhancement of mechanical properties. However, serious phase separation and declined tensile strength were obtained with a reversed mixing sequence.

scholarly journals Design, synthesis, and catalytic performance of modified graphene oxide based on a cobalt complex as a heterogenous catalyst for the preparation of aminonaphthoquinone derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17108-17115
Author(s):  
Mahnaz Mirheidari ◽  
Javad Safaei-Ghomi
Keyword(s):  
Graphene Oxide ◽  
Cobalt Complex ◽  
Catalytic Performance ◽  
Silica Particles ◽  
Design Synthesis ◽  
Spherical Silica ◽  
Modified Graphene Oxide ◽  
Spherical Silica Particles ◽  
Heterogenous Catalyst ◽  
Modified Graphene

GO@f-SiO2@Co is a heterogenous catalyst composed of spherical silica particles grafted on the surface of graphene oxide with ethylenediamine ligands and coordination with Co(ii). We assessed the activity of the catalyst for the synthesis of aminonaphthoquinones.

Enhanced flame retardancy of polypropylene by melamine-modified graphene oxide

2015 ◽  
Vol 50 (16) ◽  
pp. 5389-5401 ◽  
Author(s):  
Bihe Yuan ◽  
Haibo Sheng ◽  
Xiaowei Mu ◽  
Lei Song ◽  
Qilong Tai ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Flame Retardancy ◽  
Modified Graphene Oxide ◽  
Modified Graphene
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