PMID- 36135851
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220928
IS  - 2077-0375 (Print)
IS  - 2077-0375 (Electronic)
IS  - 2077-0375 (Linking)
VI  - 12
IP  - 9
DP  - 2022 Aug 25
TI  - Novel PDMS-b-PPO Membranes Modified with Graphene Oxide for Efficient 
      Pervaporation Ethanol Dehydration.
LID - 10.3390/membranes12090832 [doi]
LID - 832
AB  - Purification and concentration of bioalcohols is gaining new status due to their 
      use as a promising alternative liquid biofuel. In this work, novel 
      high-performance asymmetric membranes based on a block copolymer (BCP) 
      synthesized from polydimethylsiloxane (PDMS) and poly(2,6-dimethyl-1,4-phenylene 
      oxide) (PPO) were developed for enhanced pervaporation dehydration of ethanol. 
      Improvement in dehydration performance was achieved by obtaining BCP membranes 
      with a "non-perforated" porous structure and through surface and bulk 
      modifications with graphene oxide (GO). Formation of the BCP was confirmed by 
      Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) 
      spectroscopies. The changes to morphology and physicochemical properties of the 
      developed BCP and BCP/GO membranes were studied by scanning electron (SEM) and 
      atomic force (AFM) microscopies, thermogravimetric analysis (TGA) and contact 
      angle measurements. Transport properties of the developed membranes were 
      evaluated by the pervaporation dehydration of ethanol over a wide concentration 
      range (4.4-70 wt.% water) at 22  degrees C. The BCP (PDMS:PPO:2,4-diisocyanatotoluene = 
      41:58:1 wt.% composition) membrane modified with 0.7 wt.% GO demonstrated optimal 
      transport characteristics: 80-90 g/(m(2)h) permeation flux with high selectivity 
      (76.8-98.8 wt.% water in the permeate, separation factor of 72-34) and 
      pervaporation separation index (PSI) of 5.5-2.9.
FAU - Dmitrenko, Mariia
AU  - Dmitrenko M
AUID- ORCID: 0000-0002-6560-5946
AD  - St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 
      199034, Russia.
FAU - Chepeleva, Anastasia
AU  - Chepeleva A
AD  - St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 
      199034, Russia.
FAU - Liamin, Vladislav
AU  - Liamin V
AUID- ORCID: 0000-0002-3581-7163
AD  - St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 
      199034, Russia.
FAU - Kuzminova, Anna
AU  - Kuzminova A
AUID- ORCID: 0000-0001-5401-254X
AD  - St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 
      199034, Russia.
FAU - Mazur, Anton
AU  - Mazur A
AD  - St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 
      199034, Russia.
FAU - Semenov, Konstantin
AU  - Semenov K
AD  - Pavlov First Saint Petersburg State Medical University, L'va Tolstogo Ulitsa 6-8, 
      St. Petersburg 197022, Russia.
FAU - Penkova, Anastasia
AU  - Penkova A
AUID- ORCID: 0000-0001-8443-951X
AD  - St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 
      199034, Russia.
LA  - eng
GR  - 21-73-00043/Russian Science Foundation/
PT  - Journal Article
DEP - 20220825
PL  - Switzerland
TA  - Membranes (Basel)
JT  - Membranes
JID - 101577807
PMC - PMC9505798
OTO - NOTNLM
OT  - block copolymer
OT  - ethanol dehydration
OT  - graphene oxide
OT  - membrane
OT  - pervaporation
OT  - poly(2,6-dimethyl-1,4-phenylene oxide)
OT  - polydimethylsiloxane
COIS- The authors declare no conflict of interest.
EDAT- 2022/09/23 06:00
MHDA- 2022/09/23 06:01
PMCR- 2022/08/25
CRDT- 2022/09/22 09:43
PHST- 2022/07/29 00:00 [received]
PHST- 2022/08/20 00:00 [revised]
PHST- 2022/08/22 00:00 [accepted]
PHST- 2022/09/22 09:43 [entrez]
PHST- 2022/09/23 06:00 [pubmed]
PHST- 2022/09/23 06:01 [medline]
PHST- 2022/08/25 00:00 [pmc-release]
AID - membranes12090832 [pii]
AID - membranes-12-00832 [pii]
AID - 10.3390/membranes12090832 [doi]
PST - epublish
SO  - Membranes (Basel). 2022 Aug 25;12(9):832. doi: 10.3390/membranes12090832.