PMID- 32775909
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2470-1343 (Electronic)
IS  - 2470-1343 (Linking)
VI  - 5
IP  - 30
DP  - 2020 Aug 4
TI  - Ionic Liquid (1-Ethyl-3-methylimidazolium Acetate) Plasticization of 
      Chitosan-Based Bionanocomposites.
PG  - 19070-19081
LID - 10.1021/acsomega.0c02418 [doi]
AB  - The structure and properties of different biopolymer composites based on chitosan 
      and chitosan/carboxymethyl cellulose (CMC) are governed by multiple 
      structure-property relationships associated with different phase interactions. 
      Plasticization of these matrices with ionic liquid 1-ethyl-3-methylimidazolium 
      acetate ([C(2)mim][OAc]) played a dominant role, increasing the mobility of 
      biopolymer chains as well as ions and associated dipoles but reducing biopolymer 
      chain interactions, crystallinity, and thermal stability. These structural 
      changes led to higher matrix ionic conductivity, shorter electrical relaxation 
      time, and greater matrix ductility. The inclusion of graphene oxide (GO) and 
      reduced GO (rGO) also influenced the structure and properties of these 
      bionanocomposites by disrupting the biopolymer hydrogen bonding and/or 
      polyelectrolyte complexation (PEC) and interacting with [C(2)mim][OAc]. The 
      impact of GO/rGO was more evident for 20 wt % [C(2)mim][OAc], such as increased 
      crystallinity and thermal stability of chitosan. PEC was hindered with excess (40 
      wt %) [C(2)mim][OAc] added and further hindered again when rGO was included. This 
      study shows that the structure and properties of bionanocomposites are not just 
      determined by the surface chemistry of GO/rGO but can also be influenced by 
      multiple interactions involving plasticizers such as ILs and additional 
      biopolymers.
CI  - Copyright (c) 2020 American Chemical Society.
FAU - Chen, Pei
AU  - Chen P
AD  - College of Food Science, South China Agricultural University, Guangzhou, 
      Guangdong 510642, China.
AD  - International Institute for Nanocomposites Manufacturing (IINM), WMG, University 
      of Warwick, Coventry CV4 7AL, United Kingdom.
FAU - Xie, Fengwei
AU  - Xie F
AD  - International Institute for Nanocomposites Manufacturing (IINM), WMG, University 
      of Warwick, Coventry CV4 7AL, United Kingdom.
AD  - School of Chemical Engineering, The University of Queensland, Brisbane, Qld 4072, 
      Australia.
FAU - Tang, Fengzai
AU  - Tang F
AD  - WMG, University of Warwick, Coventry CV4 7AL, United Kingdom.
FAU - McNally, Tony
AU  - McNally T
AD  - International Institute for Nanocomposites Manufacturing (IINM), WMG, University 
      of Warwick, Coventry CV4 7AL, United Kingdom.
LA  - eng
PT  - Journal Article
DEP - 20200722
PL  - United States
TA  - ACS Omega
JT  - ACS omega
JID - 101691658
PMC - PMC7408243
COIS- The authors declare no competing financial interest.
EDAT- 2020/08/11 06:00
MHDA- 2020/08/11 06:01
PMCR- 2020/07/22
CRDT- 2020/08/11 06:00
PHST- 2020/05/22 00:00 [received]
PHST- 2020/07/08 00:00 [accepted]
PHST- 2020/08/11 06:00 [entrez]
PHST- 2020/08/11 06:00 [pubmed]
PHST- 2020/08/11 06:01 [medline]
PHST- 2020/07/22 00:00 [pmc-release]
AID - 10.1021/acsomega.0c02418 [doi]
PST - epublish
SO  - ACS Omega. 2020 Jul 22;5(30):19070-19081. doi: 10.1021/acsomega.0c02418. 
      eCollection 2020 Aug 4.