摘要
以偶氮二异丁腈(AIBN)为引发剂,以可聚合硼酸酯(BES)和丙烯酰胺(AM)为单体,采用自由基聚合法合成了新型聚硼酸酯(P(BES-AM))。用傅里叶变换红外光谱、核磁共振氢谱等手段对P(BES-AM)的结构进行表征;并用吊环法对合成的不同单体配比的P(BES-AM)水溶液进行表面张力测试。实验结果表明,合成的P(BES-AM)为白色固体粉末,表面活性优异;P(BES-AM)水溶液最低表面张力达到30.6mN/m(25℃,pH=7),接近常规低分子表面活性剂的应用水平;P(BES-AM)的特性黏数在25.2～90.5mL/g(30℃,1mol/LNaCl);随BES含量的增加,虽P(BES-AM)的收率和特性黏数降低,但有利于P(BES-AM)表面活性的增加;与常规高分子表面活性剂相比,P(BES-AM)具有较高的聚合度和优异的表面活性,应用前景广阔。
A novel polyborate P（BES-AM） was synthesized by copolymerization of borate surfmer （BES） with acrylamide（AM） using azobisisobutyronitrile（AIBN） as initiator. The product structure was characterized by means of FTIR and 1H NMR. Surface tension of P （BES-AM） in aqueous solution was measured by Du-ring method. The synthesized P （BES-AM） is white powder with excellent surface activity. Surface tension at critical micelle concentration of P （BES-AM） with different monomer mole ratios approaches to 30.6 mN/m （25℃, pH = 7）, which is close to surface activity of conventional low relative molecular mass surfactants. The intrinsic viscosities of P （BES- AM） are in the range of 25.2 -90.5 mL/g（30℃, 1 mol/L NaCl）. Increasing of BES content in the system leads to decreases of both yield and intrinsic viscosity （ relative molecular mass ） of P （ BES- AM）, but improves its surface activity significantly. Compared with conventional macromolecular surfactants, P（BES-AM） possesses both high relative molecular mass and surface activity, and its prospect for application will be broader.
出处
《石油化工》
CAS
CSCD
北大核心
2009年第8期884-888,共5页
Petrochemical Technology
基金
教育部科技重大项目(308019)
国家科技支撑计划重点项目(2007BAC25B01)
湖南省节能减排科技重大项目(2008FJ1013/08SK1005)
关键词
丙烯酰胺
聚硼酸酯
表面活性
高分子表面活性剂
自由基聚合
acrylamide
polyborate
surface activity
macromolecular surfactant
free radical polymerization
