{
    "protocol": "To prepare amphiphilic SIPN coatings from POSS-PDMAEMA-b-PSBMA block copolymers, integrate POSS with both PDMAEMA and PSBMA via atom transfer radical polymerization (ATRP). Use a small amount (10 wt%) of EGDMA and subject the mixture to UV-curing. The PDMAEMA and PSBMA blocks should be coupled with hydrophobic POSS groups to enhance water or vapor absorption in the coatings.The POSS-PDMAEMA-b-PSBMA block copolymers were synthesized via ATRP of DMAEMA using POSS-Br as an initiator, followed by ATRP of SBMA using POSS-PDMAEMA−Br as a macroinitiator. Three block copolymers with different polymerization degrees were prepared. Control block copolymer PDMAEMA-b-PSBMA was synthesized using ethyl-2-bromoisobutanoate as the initiator. Each block copolymer was prepared by dissolving in 2,2,2-trifluoroethanol at 25 mg/mL, with EGDMA (10 wt%) and Igracure 2959 UV photoinitiator (2 wt%) added. 0.2 mL of the polymer solution was cast on a glass slide and polymerized under UV (365 nm, 15 W, 1800 s). The thickness of the SIPN coatings was approximately 10 µm."
}