CAJ | 학술논문

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。
통과표면장력화표관점도적측정,연구료괴당지여취병희선알( PAM)적상호작용。결과표명,가입PAM,괴당지용액적표면장력략유승고,림계효속농도( CMC)유약30 mg/L승고위약40 mg/L,단괴당지/PAM혼합용액적표면장력주요수괴당지농도적영향。온도승고,혼합용액적표면장력략유강저,CMC보지불변；가입록화납,혼합용액적표면장력략유강저。유우괴당지여PAM적“소수미구”상호작용형성혼합효속,가입괴당지,PAM용액적표관점도출현불동정도적승고,당괴당지농도위30 mg/L시,PAM용액적표관점도최고。괴당지여취병희선알복배재강저표면장력적동시능제고체계적표관점도,괄용우삼차채유기술。
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.