摘要
以马铃薯淀粉(PS)为原料,以N,N-亚甲基双丙烯酰胺(MBA)为交联剂,以K2S2O8和Na HSO3作为引发体系中的氧化剂和还原剂,以微波加热代替传统水浴,通过反向乳液法制备一种新型的多孔马铃薯淀粉,并通过电子显微镜(SEM)对天然马铃薯淀粉和多孔马铃薯淀粉进行形貌的比较和表征.以亚甲基蓝(MB)作为吸附对象,以多孔淀粉的吸附量为因变量,以微波辐射功率、环己烷体积、分散剂质量、乳化分散速度以及交联剂质量为单因素及正交试验的影响因素,探究以上五因素对吸附量的影响.实验结果表明:多孔马铃薯淀粉的吸附量随着波辐射功率、环己烷体积、分散剂质量、乳化分散速度以及交联剂质量的变化而先增大后减小,其中分散剂质量、环己烷体积与微波辐射功率的变化对多孔马铃薯淀粉的吸附量影响较大,最佳工艺参数为:分散剂质量为1.1 g,搅拌转速为2 000 rad/min,交联剂质量为0.6 g,微波功率为240 W,环己烷体积为250 m L.
A new porous starch was synthesized by inverse emulsion polymerzation with microwave-assisted instead of water bath with native potato starch （PS） as raw material, MBA as crosslinker, and K2S2Os-NaHSO3 as oxidizing a- gent and reducing agent in the initiating system. The comparison and characterization of natural starch with porous starch were investigated through Scanning electron microscope （SEM）. Adsorption performance was dis- cussed in methylene blue（MB） solution, with adsorption capacity of porous starch as response variable and mi- crowave power, cyclohexane volume, quantity of dispersant, stirring speed and quantity of crosslinker as inde- pendent variables of single factor experiments and orthogonal experiments. The results showed that as the in- crease of microwave power, cyclohexane volume,quantity of dispersant, stirring speed and quantity of crosslinker , the adsorption capacity of porous starch increased firstly, and then decreased. Among the variables, quantity of dispersant,cyclohexane volume and microwave power have significant impact on the adsorption of porous starch. The optimum polymerization conditions were 1.1 g dispersant, microwave power 240 W, cyclo- hexane volume 250 mL, 2 000 rad/min of stirring speed and 0.6 g MBA.
出处
《天津工业大学学报》
CAS
北大核心
2015年第5期18-22,共5页
Journal of Tiangong University
基金
国家青年科学基金资助项目(51403152)
关键词
反向乳液法
多孔淀粉
吸附
亚甲基蓝
马铃薯淀粉
微波
inverse emulsion polymerization
porous starch
adsorption
methylene blue
potato starch
microwave
作者简介
通信作者：王建坤（1961-），女，博士，教授，硕士生导师，主要研究方向为纺织材料新工艺、新技术．E—mail：jiankunwang2010@163．com
