Methyl acrylate

MEthyl acrylate (MA) and 2,2′-azobis(2,4-dimethylvaleronitrile) (ADVN) were purchased from FUJIFILM Wako Pure Chemical. Ethyl acrylate (EA), n-butyl acrylate (BA), and 1,4-butanediol diacrylate were purchased from Tokyo Chemical Industry. Dimethylformamide (DMF) was purchased from KANTO CHEMICAL. All reagents and solvents were commercially obtained and used as received.

Hydroxypropyl cellulose (HPC) was purchased from Tokyo Chemical Industry Co., Ltd. (TCI) and the molecular parameters are as follows: number- and weight-average molecular weights, 9.9 × 10⁴ and 1.5 × 10⁴ respectively; degree of substitution, DS = 1.4 and MS = 3.9,^{28 (link)} where DS and MS denote an average number of substituted hydroxyl group and that of introduced hydroxypropyl group, respectively. Methyl acrylate (MA), methyl methacrylate (MMA), ethyl acrylate (EA), ethyl methacrylate (EMA), isopropyl methacrylate (iPMA), and 4-acryloylmorpholine (ACMO) were obtained from TCI and used after passing through a column packed with activated alumina (Wako Pure Chemical Industries, Ltd. (Wako)). Dehydrated pyridine (Wako), propionic anhydride (TCI), 4-dimethylaminopyridine (DMAP) (Wako), 2-hydroxy-2-methylpropiophenone (HMPPh) (Sigma Aldrich Co. LCC.) were used without further purification.