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.
J Colloid Interface Sci. 2010 Dec 1;352(1):36-42. doi: 10.1016/j.jcis.2010.08.022. Epub 2010 Aug 10.
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.
将原子转移自由基聚合（ATRP）和开环聚合（ROP）相结合，提出了一种在纳米羟基磷灰石（n-HAP）表面生长梳状聚（ε-己内酯）刷的简便策略。首先，通过 ATRP 将聚（2-羟乙基甲基丙烯酸酯）（PHEMA）接枝到 n-HAP 表面。然后，将引入到 n-HAP 上的羟基用于引发ε-己内酯的 ROP，在 n-HAP 表面构建梳状聚合物刷。通过傅里叶变换红外（FT-IR）光谱、（13）C 固态交叉极化魔角旋转（（13）C CP/MAS）和热重分析（TGA）、X 射线衍射（XRD）和透射电子显微镜（TEM）测量分别对表面改性的 n-HAP 进行了表征。结果表明，成功接枝了梳状聚（ε-己内酯）刷，并且可以通过调整引发剂和单体的进料比来很好地控制接枝比。
