Azobisisobutyronitrile

All chemicals were used as received unless otherwise specified. Styrene and glycidyl methacrylate (GMA) were purchased from TCI Chemicals and Sigma-Aldrich, respectively. Azobisisobutyronitrile (AIBN) was purchased from the Junsei Chemical Co., Ltd., and recrystallized from methanol prior to use. Tetrahydrofuran (THF), toluene, methyl ethyl ketone (MEK), and methanol were purchased from Honeywell Chemicals, Samchun Chemicals, Alfa Aesar, and Daejung Chemicals, respectively. 3-Mercaptopropionic acid (MPA), lithium hydroxide (LiOH), polystyrene (PS, M_n = 35 kg/mol), and poly(glycidyl methacrylate) (PGMA, M_n = 10–20 kg/mol) were purchased from Sigma-Aldrich.

Butyl acrylate (>99%), 2-ethylhexyl acrylate (>99%), ethyl acrylate (>99%), 2-hydroxyethyl acrylate (>95%), acrylic acid (>99%), abietic acid (>80%), triethylamine (>99%), and 2-isocyanatoethyl methacrylate (>98%) were purchased from Tokyo Chemical Industry. Tris(4-hydroxyphenyl)methane triglycidyl ether (>95%) and dibutyltin dilaurate (95%) were purchased from Sigma-Aldrich Korea Ltd. (Yongin, Korea). Toluene (99.5%), ethyl acetate (99.5%), and methyl ethyl ketone (99.5%) were purchased from Samchun Chemical (Pyeongtaek, Korea). Azobisisobutyronitrile (AIBN, 98%) was purchased from Junsei Chemical (Tokyo, Japan). All chemicals were used as received without further purification. The epoxy crosslinker was used after dilution to a solid content of 5 wt% with Toluene. A 17-μm-thick graphite sheet was purchased from Tanyuan technology (Changzhou, China). A silicone-coated polyethylene terephthalate (PET) film and a polyethylene terephthalate (PET) film were purchased from SKC (Seoul, Korea). A stainless steel (SS) plate was purchased from MMSTECH (Bucheon, Korea). The micro structure of the g-TC film was analyzed using a scanning electron microscope (SEM, JSM 6380, JEOL, Tokyo, Japan) and a digital microscope (MXB-5000REZ, HIROX, Tokyo, Japan).

Ethanol and methylene chloride were purchased from Fisher Scientific (Hampton, USA). CAP was obtained from Eastman chemicals (Kingsport TN, USA) and CsA was purchased from Taejoon Pharmaceutical Co. Ltd. (Seoul, South Korea). Hydroxyethyl methacrylate (HEMA), poly(ethylene glycol) methyl ether methacrylate(Mn 950), and ethylene glycol dimethacrylate (EGDMA) were obtained from Sigma-Aldrich (St Louis, MO, USA). Azobisisobutyronitrile (AIBN) was procured from Junsei (Tokyo, Japan). CL polypropylene molds consisting of top and bottom molds with the diameter of 11.4 mm and the thickness of 0.1 mm were supplied by Youngwon Tech (Daegu, Korea).