Matches in SemOpenAlex for { <https://semopenalex.org/work/W4311404889> ?p ?o ?g. }
- W4311404889 abstract "Although processing via external stimuli is a promising technique to tune the structure and properties of polymeric materials, the impact of magnetic fields on phase transitions in thermoresponsive polymer solutions is not well-understood. As nanoparticle (NP) addition is also known to impact these thermodynamic and optical properties, synergistic effects from combining magnetic fields with NP incorporation provide a novel route for tuning material properties. Here, the thermodynamic, optical, and rheological properties of aqueous poly(N-isopropyl acrylamide) (PNIPAM) solutions are examined in the presence of hydrophilic silica NPs and magnetic fields, individually and jointly, via Fourier-transform infrared spectroscopy (FTIR), magneto-turbidimetry, differential scanning calorimetry (DSC), and magneto-rheology. While NPs and magnetic fields both reduce the phase separation energy barrier and lower optical transition temperatures by altering hydrogen bonding (H-bonding), infrared spectra demonstrate that the mechanism by which these changes occur is distinct. Magnetic fields primarily alter solvent polarization while NPs provide PNIPAM-NP H-bonding sites. Combining NP addition with field application uniquely alters the solution environment and results in field-dependent rheological behavior that is unseen in polymer-only solutions. These investigations provide fundamental understanding on the interplay of magnetic fields and NP addition on PNIPAM thermoresponsivity which can be harnessed for increasingly complex stimuli-responsive materials." @default.
- W4311404889 created "2022-12-26" @default.
- W4311404889 creator A5031658787 @default.
- W4311404889 creator A5048611242 @default.
- W4311404889 creator A5055278530 @default.
- W4311404889 creator A5061096456 @default.
- W4311404889 creator A5073082102 @default.
- W4311404889 creator A5074472343 @default.
- W4311404889 date "2022-12-14" @default.
- W4311404889 modified "2023-10-16" @default.
- W4311404889 title "Effect of nanoparticle loading and magnetic field application on the thermodynamic, optical, and rheological behavior of thermoresponsive polymer solutions" @default.
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- W4311404889 doi "https://doi.org/10.1002/vnl.21968" @default.
- W4311404889 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37546292" @default.