Fig 1.
A: Structure of PNSP; B: The structure of sodium polyacrylate; C: Cross-linking of PNSP with Al3+.
Table 1.
Characteristics of PNSP of different types.
Fig 2.
A: Preparation of the gel patch; B: The test items of gel patches on Day 0 and Day 30; C: Adhesiveness test device diagram; D: State of the sample on the rheometer.
Fig 3.
Day 0 and Day 30 gel patches.
Table 2.
Adhesiveness test results (n = 3).
Fig 4.
Peel strength results of the gel patches (n = 3).
Table 3.
Sensitive substances for electronic nose sensors.
Fig 5.
A: PCA of four gel patches (n = 3). B: Loading plot of four gel patches (n = 3).
Fig 6.
A: Amplitude scanning of GP-AH-105X and GP-NP-700; B: Amplitude scanning of GP-AH-106X and GP-NP-800.
Fig 7.
A: Frequency sweep of GP-AH-105X and GP-NP-700; B: Frequency sweep of GP-AH-106X and GP-NP-800; C: Loss angle tangent of the preparation of GP-AH-105X and GP-NP-700; D: Loss angle tangent of the preparation of GP-AH-106X and GP-NP-800.
Fig 8.
A: GP-AH-105X, bar: 200 nm; B: GP-NP-700, bar: 200 nm; C: GP-AH-106X, bar: 200 nm; D: GP-NP-800, bar: 200 nm.
Fig 9.
A: The size of the voids in the three-dimensional network structure of gel patches (n = 10); B: Percentage of pore volume in the 3D Structure of gel patches (n = 3).
Fig 10.
A: Thermogravimetric analysis diagram of AH-105X and NP-700; B: Thermogravimetric analysis diagram of AH-106X and NP-800; C: Thermogravimetric analysis diagram of GP-AH-105X and GP-NP-700; D: Thermogravimetric analysis diagram of GP-AH-106X and GP-NP-800.
Fig 11.
A: Mass to charge ratio of GP-AH-105X; B: Mass to charge ratio of GP-NP-700；C: Mass to charge ratio of GP-AH-106X; D: Mass to charge ratio of GP-NP-800.
Fig 12.
A: GP-AH-105X, bar: 1 μm; B: GP-NP-700, bar: 1 μm; C: GP-AH-106X, bar: 1 μm; D: GP-NP-800, bar: 1 μm; E: GP-AH-105X, bar: 1 μm; F: GP-NP-700, bar: 1 μm; G: GP-AH-106X, bar: 1 μm; H: GP-NP-800, bar: 1 μm.