title: A new approach for synthesis of the comb-shaped poly (ε-caprolactone) brushes on the surface of nano-hydroxyapatite by combination of ATRP and ROP.
abstract: A facile strategy for growing the comb-shaped poly (ε-caprolactone) brushes on the surface of nano-hydroxyapatite (n-HAP) by combination of atom transfer radical polymerization (ATRP) and ring-opening polymerization (ROP) would be presented. Firstly, ATRP was used to graft poly (2-hydroxyethyl methacrylate) (PHEMA) onto the n-HAP surface. Then, the hydroxyl groups introduced onto the n-HAP were used to initiate the ROP of ε-caprolactone for constructing comb-shaped polymer brushes on the surface of n-HAP. The surface modified n-HAP was characterized by Fourier transform infrared (FT-IR) spectra, (13)C solid-state cross-polarization magic-angle-spinning ((13)C CP/MAS), and thermal gravimetric analysis (TGA), X-ray diffraction (XRD), and transmission electron microscopy (TEM) measurements, respectively. The results demonstrated that the comb-shaped poly (ε-caprolactone) brushes had been grafted successfully, and the grafting ratio could be controlled well by adjusting the feed ratio of initiator and monomer.
authors.affiliation: Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, and Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, Xiangtan 411105, PR China.
authors.forename: Liang
authors.initials: L
authors.lastname: Zeng
authors.forename: Haibo
authors.initials: H
authors.lastname: Wang
authors.forename: Guoxin
authors.initials: G
authors.lastname: Fu
authors.forename: Jianwei
authors.initials: J
authors.lastname: Jiang
authors.forename: Xuefei
authors.initials: X
authors.lastname: Zhang
mesh_terms: D017886:Durapatite / Q000737:chemistry*; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D011091:Polyesters / Q000138:chemical synthesis* / Q000737:chemistry; D011102:Polyhydroxyethyl Methacrylate / Q000737:chemistry; D013499:Surface Properties
chemical_list: D011091:Polyesters; C016240:polycaprolactone; D011102:Polyhydroxyethyl Methacrylate; D017886:Durapatite