Hydroxypropyl cellulose hpc

Hydroxypropyl cellulose (HPC), of which the molecular weight and substitution degree of hydroxypropyl were determined by gel permeation chromatography (GPC) and ¹H NMR and to be 199 000 and 1.68, was purchased from Tokyo Chemical Industry Co., Ltd. 1,2‐propanediol (PG) was purchased from Kelong Chemical Co., Ltd. 3D printing resin was purchased from Anycubic Technology Co., Ltd. Aerosol paint (black, NO. 39) was purchased from Sanhe Chemical Technology Co., Ltd. All materials were used as received without any further purification. Deionized water used in all experiments was collected from a Milli‐Q Plus water purification system (Millipore, USA).

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.