Table 1 Experimental properties of the six synthesized polyimides

From: Discovery of liquid crystalline polymers with high thermal conductivity using machine learning

Sample

\({T}_{{{LC}}_{h}}\) (°C)

\({T}_{{\rm{m}}}\) (°C)

\({T}_{{{LC}}_{c}}\) (°C)

\({T}_{{\rm{C}}}\) (°C)

\(\alpha\) (×10−7 m2 s−1)

\(d\) (nm)

\({C}_{{\rm{p}}}\) (J g−1 K−1)

\(\rho\) (g cm−3)

\(\lambda\) (W m−1 K−1)

\(S\)

PIC1-1

391/399

459/457

314/305

403/393

5.74 ± 0.01

600

1.18

1.32

0.894 ± 0.003

−0.45

PIC1-2

424/-

478/459

334/326

445/424

7.93 ± 0.08

500

1.16

1.37

1.26 ± 0.013

−0.44

PIC2-1

402/-

474/477

273/259

360/352

5.77 ± 0.04

470

1.2

1.31

0.904 ± 0.007

−0.40

PIC2-2

-

460/463

298/332

356/454

6.88 ± 0.17

260

1.13

1.36

1.06 ± 0.026

−0.35

PIC3-1

-

464/492

325/321

411/411

4.71 ± 0.05

540

1.16

1.32

0.722 ± 0.008

−0.33

PIC3-2

-

456/420

-/349

374/372

6.35 ± 0.36

270

1.13

1.38

0.990 ± 0.056

−0.33

  1. \({T}_{{\rm{LC}}}\), \({T}_{{\rm{m}}}\), and \({T}_{{\rm{c}}}\) values measured via FSC at scan rates of 5000 and 10,000 K/s during heating and cooling; thermal diffusivities \(\alpha\) measured by μ-TWA; thickness values d measured by the step profilometer (Alpha-Step IQ); specific heat capacities \({C}_{{\rm{p}}}\) determined via differential scanning calorimetry; densities \(\rho\) measured by the density gradient tube method; and thermal conductivities \(\lambda\) calculated from the \(\alpha\), \({C}_{{\rm{p}}}\), and density values. The uniaxial orientational order parameter \(S\) was calculated from the GIWAXD results.
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