Surface Properties and Hydrogen Bonds of Mono-functional Polybenzoxazines with Different N-substituents  

作　　者：Juan Liu Xin Lu 辛忠 Chang-lu Zhou 

机构地区：[1]School of Chemical Engineering, East China University of Science and Technology

出　　处：《Chinese Journal of Polymer Science》2016年第8期919-919,920-932,共14页高分子科学（英文版）

基　　金：financially supported by the Nanotech Foundation of Science and Technology Commission of Shanghai Municipality(No.0652nm001);the National Natural Science Fundation of China(No.u1162110);the Fundamental Research Funds for the Central Universities(No.WA1514015);and China Postdoctoral Science Foundation(No.2015M571509)

摘　　要：A series of mono-functional benzoxazine monomers with different N-substituents were synthesized from phenol, formaldehyde, and various amines （ammonia, methylamine, n-butylamine, dodecylamine）, named P-am, P-m, P-b, and P-da, respectively. The surface properties of these polybenzoxazine films were proven by contact angle measurements. The hydrogen bond network of the polybenzoxazine systems was studied using the FTIR spectra. And the results showed that the surface free energy increased with increasing the fraction of intermolecular hydrogen bonding when the N-substituent was an alkyl chain. However, the rule was not suitable when the N-substituent was H. That was because there was one more kind of intramolecular hydrogen bond in the poly（P-am）. Based on these findings, we proposed that both the N-substituent alkyl group and the fraction of intermolecular hydrogen bonding had effects on the surface free energy.A series of mono-functional benzoxazine monomers with different N-substituents were synthesized from phenol, formaldehyde, and various amines （ammonia, methylamine, n-butylamine, dodecylamine）, named P-am, P-m, P-b, and P-da, respectively. The surface properties of these polybenzoxazine films were proven by contact angle measurements. The hydrogen bond network of the polybenzoxazine systems was studied using the FTIR spectra. And the results showed that the surface free energy increased with increasing the fraction of intermolecular hydrogen bonding when the N-substituent was an alkyl chain. However, the rule was not suitable when the N-substituent was H. That was because there was one more kind of intramolecular hydrogen bond in the poly（P-am）. Based on these findings, we proposed that both the N-substituent alkyl group and the fraction of intermolecular hydrogen bonding had effects on the surface free energy.

关 键 词：POLYBENZOXAZINE Mono-functional N-substituents Surface free energy Hydrogen bonding. 

分 类 号：O641.3[理学—物理化学] O631.3[理学—化学]