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Formation of Cellulose Acetate-Graphene Oxide Nanocomposites by Supercritical CO2 Assisted Phase Inversion
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Cardea, Stefano
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Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy

Irusta, Silvia
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Nanosci Inst Aragon INA, Zaragoza 50018, Spain
Networking Biomed Res Ctr Bioengn Biomat & Nanome, Zaragoza 50018, Spain Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy

Ciambelli, Paolo
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Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy
Univ Salerno, NANO MATES, Res Ctr Nanomat & Nanotechnol, I-84084 Fisciano, SA, Italy Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy

Santamaria, Jesus
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Nanosci Inst Aragon INA, Zaragoza 50018, Spain
Networking Biomed Res Ctr Bioengn Biomat & Nanome, Zaragoza 50018, Spain Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy

Reverchon, Ernesto
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Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy
Univ Salerno, NANO MATES, Res Ctr Nanomat & Nanotechnol, I-84084 Fisciano, SA, Italy Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy
机构:
[1] Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy
[2] Univ Salerno, NANO MATES, Res Ctr Nanomat & Nanotechnol, I-84084 Fisciano, SA, Italy
[3] Nanosci Inst Aragon INA, Zaragoza 50018, Spain
[4] Networking Biomed Res Ctr Bioengn Biomat & Nanome, Zaragoza 50018, Spain
关键词:
GRAPHITE OXIDE;
CHITOSAN SCAFFOLDS;
PROTEIN ADSORPTION;
LAYER GRAPHENE;
REDUCTION;
CYTOCOMPATIBILITY;
EXFOLIATION;
POLYSULFONE;
EXTRACTION;
DISPERSION;
D O I:
10.1021/acs.iecr.5b01452
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
Cellulose acetate (CA)/graphene oxide (GO) nanocomposite membranes were generated by an assisted phase inversion process, based on the use of SC-CO2, as nonsolvent, operating at 200 bar and 40 degrees C; loadings of GO up to 9% w/w were tested. The structures maintained the cellular morphology, characteristics of CA membranes, also at the highest GO loadings used, with a porosity of about 80%, but the presence of GO influenced the pore sizes, that ranged between about 9 and 16 mu m. The starting GO and the nanocomposite structures were characterized by the combination of various techniques that evidence as sulfur and chlorinated impurities, that were present in the starting GO material, were completely eliminated by the interaction with SC-CO2 during structures formation; moreover, a partial reduction of GO to graphene was also observed.
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页码:8147 / 8156
页数:10
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