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2.5. Swelling Test

YY Yunfan Yang
JC Jinyang Chen
GM Guoli Ma
DY Dingqing Yang
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The film was first weighed as m1 and then placed in a flask with trichloromethane as a solvent until equilibrium was reached. The swollen film was wiped with filter paper and weighed as m2. The swelling ratio was calculated by (m2/m1) × 100%. After drying in a heating oven under vacuum at 60 °C for 48 h, the dried film was weighed as m3. The crosslinking degree was calculated by (m3/m1) × 100% [18].

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