摘要
首先以PBT(Mn=2000)、DMPA、TDI制得含羧基水性聚氨酯(WPU),再与Ag+、Zn2+、Al3+等金属离子复合制得一种水性聚氨酯-金属离子复合型的抗菌新材料。通过IR、TG对其结构和性能表征,结果表明金属离子和聚氨酯进行了复合,复合物中金属离子Ag+、Zn2+、Al3+的含量分别为14.64%、10.00%、4.52%。溶胀率测定结果表明:水性聚氨酯-金属离子复合物都具有一定的溶胀性,其溶胀率WPU-Al>WPU-Zn>WPU-Ag。抗菌试验结果表明:3种复合物对大肠杆菌和枯草杆菌有一定的抑菌性能,其中WPU-Ag。抗菌效果最好。
Water-soluble polyurethane （WPU） with carboxyl function group was synthesized with polybutylene terephthalate （ PBT, Mn = 2000）, dimethylol propionic acid （ DMPA ） and toluene diisocyanate （TDI）. A new kind of antibacterial material was prepared by ionic complex of Ag^＋ , Zn^2＋ and Al^3＋ with WPU as carrier. Its structure was characterized by IR spectra. The results of TG showed that the content of metallic ion Ag^＋ ,Zn^2＋ and Al^3＋ were 14.64 % , 10.00 % and 4.52 % , respectively. The degree of swelling of the polymers （ WPU-Al 〉 WPU-Zn 〉 WPU-Ag） seemed to be related to the electronic structure of the transition metals. The antibacterial tests of the WPU-metal ion complexes showed that the three complexes had antibacterial activity,where WPU-Ag was the best.
出处
《塑料》
CAS
CSCD
北大核心
2010年第2期38-40,67,共4页
Plastics
