RNS-A/壳聚糖纳米材料的制备与性能表征  

Preparation and Properties Characterization of RNS-A/Chitosan Nano Material

作　　者：闫凤美[1] 李荣强[1] 张军丽[1] 张燕[1] 潘庆才[1] 

机构地区：[1]黄淮学院化学化工系,驻马店463000

出　　处：《人工晶体学报》2012年第4期1097-1101,共5页Journal of Synthetic Crystals

基　　金：河南省基础与前沿技术研究项目(122300410209;082300450510);河南省科技发展计划项目(112102310649);河南省驻马店市基础与前沿技术研究项目(12701)

摘　　要：RNS-A经羟丙基化修饰后,以化学键与壳聚糖发生交联,得到了一种新型的RNS-A/壳聚糖纳米材料。探讨了纳米材料的制备机理,用红外光谱仪(FTIR)、透射电镜(TEM)和热重分析仪(TG)对纳米材料进行了表征,考察了纳米材料的沉降性能、吸附性能。结果表明,纳米材料以亲电、亲核取代反应而制得;RNS-A颗粒均匀分布在壳聚糖链中,表面及内部分布有孔道或空穴;纳米材料的热降解温度由复合前的263℃提高到318℃,沉降速率约是壳聚糖的两倍。RNS-A/Chitosan nanomaterial was obtained by using chitosan and hydroxypropylation RNS-A by the chemical bond. The preparation mechanism of the nanomaterial was discussed. The nanomaterial was characterized by FFIR, TEM and TG. The settling property and adsorption of the nanomaterial were investigated. The results showed that the nanomaterial was prepared through electrophilic and nucleophilic substitution reaction;Some holes and gaps which distributed to surface and interior of the nanomaterial were formed. The temperature of degradation was promoted to 318 ℃ from 263 ℃, and the settling rate was about two times of chitosan.

关 键 词：反应性纳米二氧化硅 壳聚糖 键合 

分 类 号：O613.72[理学—无机化学]