Formation of Cellulose Acetate-Graphene Oxide Nanocomposites by Supercritical CO2 Assisted Phase Inversion

被引:40
作者
Baldino, Lucia [1 ]
Sarno, Maria [1 ,2 ]
Cardea, Stefano [1 ]
Irusta, Silvia [3 ,4 ]
Ciambelli, Paolo [1 ,2 ]
Santamaria, Jesus [3 ,4 ]
Reverchon, Ernesto [1 ,2 ]
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.
引用
收藏
页码:8147 / 8156
页数:10
相关论文
共 62 条
[1]   Stable Aqueous Dispersions of Noncovalently Functionalized Graphene from Graphite and their Multifunctional High-Performance Applications [J].
An, Xiaohong ;
Simmons, Trevor John ;
Shah, Rakesh ;
Wolfe, Christopher ;
Lewis, Kim M. ;
Washington, Morris ;
Nayak, Saroj K. ;
Talapatra, Saikat ;
Kar, Swastik .
NANO LETTERS, 2010, 10 (11) :4295-4301
[2]   Chitosan scaffolds formation by a supercritical freeze extraction process [J].
Baldino, L. ;
Cardea, S. ;
De Marco, I. ;
Reverchon, E. .
JOURNAL OF SUPERCRITICAL FLUIDS, 2014, 90 :27-34
[3]   Supercritical assisted enzymatic membranes preparation, for active packaging applications [J].
Baldino, L. ;
Cardea, S. ;
Reverchon, E. .
JOURNAL OF MEMBRANE SCIENCE, 2014, 453 :409-418
[4]   Kinetic Study of the Graphite Oxide Reduction: Combined Structural and Gravimetric Experiments under Isothermal and Nonisothermal Conditions [J].
Barroso-Bujans, Fabienne ;
Alegria, Angel ;
Colmenero, Juan .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (49) :21645-21651
[5]   In-situ synthesis and characterization of electrically conductive polypyrrole/graphene nanocomposites [J].
Bose, Saswata ;
Kuila, Tapas ;
Uddin, Md Elias ;
Kim, Nam Hoon ;
Lau, Alan K. T. ;
Lee, Joong Hee .
POLYMER, 2010, 51 (25) :5921-5928
[6]   Supercritical fluids applications in nanomedicine [J].
Campardelli, R. ;
Baldino, L. ;
Reverchon, E. .
JOURNAL OF SUPERCRITICAL FLUIDS, 2015, 101 :193-214
[7]   A poly (ethylene oxide)/graphene oxide electrolyte membrane for low temperature polymer fuel cells [J].
Cao, Yuan-Cheng ;
Xu, Chenxi ;
Wu, Xu ;
Wang, Xu ;
Xing, Lei ;
Scott, Keith .
JOURNAL OF POWER SOURCES, 2011, 196 (20) :8377-8382
[8]   Supercritical CO2 assisted formation of poly(vinylidenefluoride) aerogels containing amoxicillin, used as controlled release device [J].
Cardea, S. ;
Sessa, M. ;
Reverchon, E. .
JOURNAL OF SUPERCRITICAL FLUIDS, 2011, 59 :149-156
[9]   Nanostructured PVDF-HFP membranes loaded with catalyst obtained by supercritical CO2 assisted techniques [J].
Cardea, S. ;
Reverchon, E. .
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2011, 50 (07) :630-636
[10]   Facile synthesis of reduced graphene oxide/WO3 nanoplates composites with enhanced photocatalytic activity [J].
Chai, Bo ;
Li, Jing ;
Xu, Qian ;
Dai, Ke .
MATERIALS LETTERS, 2014, 120 :177-181