槐糖脂与聚丙烯酰胺的相互作用  

Interaction of sophorolipids with polyacrylamide

作　　者：王娟[1] 孔祥平[1] 

机构地区：[1]青岛农业大学化学与药学院,山东青岛266109

出　　处：《应用化工》2015年第9期1655-1658,共4页Applied Chemical Industry

基　　金：山东省自然科学基金(ZR2014EL012;ZR2012CQ015;ZR2014CM039);青岛农业大学高层次人才科研基金(631008)

摘　　要：通过表面张力和表观黏度的测定,研究了槐糖脂与聚丙烯酰胺(PAM)的相互作用。结果表明,加入PAM,槐糖脂溶液的表面张力略有升高,临界胶束浓度(CMC)由约30 mg/L升高为约40 mg/L,但槐糖脂/PAM混合溶液的表面张力主要受槐糖脂浓度的影响。温度升高,混合溶液的表面张力略有降低,CMC保持不变;加入氯化钠,混合溶液的表面张力略有降低。由于槐糖脂与PAM的"疏水微区"相互作用形成混合胶束,加入槐糖脂,PAM溶液的表观黏度出现不同程度的升高,当槐糖脂浓度为30 mg/L时,PAM溶液的表观黏度最高。槐糖脂与聚丙烯酰胺复配在降低表面张力的同时能提高体系的表观黏度,适用于三次采油技术。The interaction between sophorolipids and polyacrylamide （PAM） were investigated by the determi-nation of surface tension and apparent viscosity. The results indicated that addition of PAM to the sophorolipid solution gives rise to the slighly increased surface tension and critical micelle concentration （ CMC） （ about 30~40 mg/L） . The surface tension of sophorolipid/PAM solution is found to be mainly affected by the concen-tration of sophorolipids. With the increasement of temperature,the surface tension of sophorolipid/PAM solution decreases slightly,while the CMC remains unchanged. Addition of sodium chloride to the solution leads to the slightly decreased surface tension. The apparent viscosity of the PAM solution increases in different degrees with the addition of sophorolipids,which may attribute to the mixed micelles formed between sophorolipids and the“hydrophobic microdomains” of PAM. The maximum apparent viscosity of the sophorolipid/PAM solution is obtained at the sophorolipid concentration of 30 mg/L. The mixture of sophorolipids and polyacrylamide can significantly reduce the surface tension and increase the apparent viscosity of the aqueous solution,and so it has good potential to be used in enhanced oil recovery.

关 键 词：槐糖脂 聚丙烯酰胺 表面张力 表观黏度 相互作用 

分 类 号：TQ317.4[化学工程—高聚物工业] O641.3[理学—物理化学]