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In article number 1900702, Jian Ping Gong and co‐workers discover that hydrophobic networks containing omniphilic organic solvents abnormally swell in water to form hydrophobic hydrogels with high water content (99.6 wt% at most). The hydrophobic hydrogels, having a fruit‐like structure with a semipermeable skin layer and water‐trapped micropores, display unique properties, including enhanced strength,...
Normally, a polymer network swells in a good solvent to form a gel but the gel shrinks in a poor solvent. Here, an abnormal phenomenon is reported: some hydrophobic gels significantly swell in water, reaching water content as high as 99.6 wt%. Such abnormal swelling behaviors in the nonsolvent water are observed universally for various hydrophobic organogels containing omniphilic organic solvents...
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