Investigation into preparation of thin-walled polystyrene hollow microspheres for ICF

Table 1. Molecular weight and distribution of different PS materials
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Table 1. Molecular weight and distribution of different PS materials
sample M_w /(kg·mol⁻¹) M_{n /}(kg·mol⁻¹) M_w/M_n
PS-1 206.0 79.6 2.6
PS-2 250.4 119.3 2.1
PS-3 297.8 92.9 3.2
PS-4 356.9 254.2 1.4

Table 2. Mass fraction 4% PS-FB oil phase viscosity at room temperature (25 ℃)
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Table 2. Mass fraction 4% PS-FB oil phase viscosity at room temperature (25 ℃)
sample viscosity /(mPa·s)
PS-1 3.55
PS-2 3.95
PS-3 4.69
PS-4 5.50

Table 3. Floating rate after ethanol replacement and the cracking rate during the drying process of PS microspheres
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Table 3. Floating rate after ethanol replacement and the cracking rate during the drying process of PS microspheres
sample microsphere uplifting rate/% cracking rate of uplifted microspheres during drying/%
PS-1 90 62
PS-2 91 51
PS-3 90 47
PS-4 90 40

Table 4. Mechanical properties of different PS
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Table 4. Mechanical properties of different PS
sample elongation at fracture/% tensile strength/MPa Young’s modulus/MPa
PS-1 2.00 18.06 875.51
PS-3 2.28 24.14 936.62
PS-4 2.49 28.46 1076.38

Table 5. Interfacial tension between oil phase and external water phase
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Table 5. Interfacial tension between oil phase and external water phase
sample interfacial tension /（mN·m⁻¹）
PS-1 7.58±0.05
PS-2 8.36±0.19
PS-3 8.66±0.13
PS-4 8.02±0.36

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Wenting Xu, Jie Li, Yiyang Liu, Qiang Chen, Yong Yi, Meifang Liu. Investigation into preparation of thin-walled polystyrene hollow microspheres for ICF[J]. High Power Laser and Particle Beams, 2022, 34(5): 052002

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