TY - JOUR
T1 - Effect of new crystalline phase on the ionic conduction properties of sodium perchlorate salt doped carboxymethyl cellulose biopolymer electrolyte films
AU - Shetty, Supriya K.
AU - Ismayil,
AU - Noor, I. M.
N1 - Funding Information:
The authors are thankful to UGC DAE Consortium for Scientific Research (Kolkata Centre), Government of India for financial assistance in the form of Research Project (Sanction No. UGC-DAE-CSR-KC/CRS/19/MS010/0931/0971 dated 10-05-2019). The authors are thankful to Dr. Saraswati P. Masti, Principal Investigator of DST-SERB project (Sanctioned No. SB/EMEQ-213/2014 dated 29-01-2016), Department of Chemistry, Karnataka University?s Karnataka Science College, Dharwad, Karnataka, India.
Funding Information:
The authors are thankful to UGC DAE Consortium for Scientific Research (Kolkata Centre), Government of India for financial assistance in the form of Research Project (Sanction No. UGC-DAE-CSR-KC/CRS/19/MS010/0931/0971 dated 10-05-2019). The authors are thankful to Dr. Saraswati P. Masti, Principal Investigator of DST-SERB project (Sanctioned No. SB/EMEQ-213/2014 dated 29-01-2016), Department of Chemistry, Karnataka University’s Karnataka Science College, Dharwad, Karnataka, India.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/11
Y1 - 2021/11
N2 - Dopant induced modifications in the microstructure of sodium carboxymethyl cellulose (NaCMC) were characterized by FTIR, XRD, DSC and EIS techniques. FTIR analysis exhibited a considerable microstructural modification in NaCMC upon NaClO4⋅H2O doping invoked through complex formation via Lewis acid-base interaction and hydrogen bond formation between ions and dipoles. This resulted in the modification in the orderliness/disorderliness of polymer chains as observed from XRD deconvolution. At higher salt concentrations, the complexity of the network causes the formation of new amorphous and crystalline phases as reflected in the XRD studies. DSC analysis showed an increase in Tg as the salt concentration increased, indicating a reduction in polymer chains flexibility. The contribution of free ions has masked over the enhancement in amorphous content to conductivity at a lower concentration of salt in the matrix, later on, the formation of a new crystalline phase due to transient crosslinks by Na+…ClO4−…Na+ has affected the ion transport process.
AB - Dopant induced modifications in the microstructure of sodium carboxymethyl cellulose (NaCMC) were characterized by FTIR, XRD, DSC and EIS techniques. FTIR analysis exhibited a considerable microstructural modification in NaCMC upon NaClO4⋅H2O doping invoked through complex formation via Lewis acid-base interaction and hydrogen bond formation between ions and dipoles. This resulted in the modification in the orderliness/disorderliness of polymer chains as observed from XRD deconvolution. At higher salt concentrations, the complexity of the network causes the formation of new amorphous and crystalline phases as reflected in the XRD studies. DSC analysis showed an increase in Tg as the salt concentration increased, indicating a reduction in polymer chains flexibility. The contribution of free ions has masked over the enhancement in amorphous content to conductivity at a lower concentration of salt in the matrix, later on, the formation of a new crystalline phase due to transient crosslinks by Na+…ClO4−…Na+ has affected the ion transport process.
UR - http://www.scopus.com/inward/record.url?scp=85116809485&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85116809485&partnerID=8YFLogxK
U2 - 10.1007/s10965-021-02781-x
DO - 10.1007/s10965-021-02781-x
M3 - Article
AN - SCOPUS:85116809485
SN - 1022-9760
VL - 28
JO - Journal of Polymer Research
JF - Journal of Polymer Research
IS - 11
M1 - 415
ER -