Kajian blending antara monomer kristal cair kolesteril akrilat dengan monomer kristal cair metilfenilbenzoil akrilat dan fotopolimerisasinya serta uji serapannya dengan spektrofotometer UV-Vis = Study of blending between liquid crystal monomer of cholesteryl acrylate with liquid crystal monomer of methylphenylbenzoyl acrylate and its photopolymerization and test of absorption by uv vis spectrophotometer