کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5188995 1381174 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of interfacial tension in poly(ethylene oxide)/polystyrene/diblock copolymer system by electric deformation method
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Study of interfacial tension in poly(ethylene oxide)/polystyrene/diblock copolymer system by electric deformation method
چکیده انگلیسی

We investigated the interfacial tension γ between poly(ethylene oxide) (PEO) and polystyrene (PS) focusing our attention on the dependence of γ on the molecular weight (M) of PEO and the surfactant effect of poly(ethylene oxide-b-styrene) diblock copolymer [P(EO-b-S)]. Measurements of γ were carried out by observing electric deformation of droplets of PEO suspended in bulk PS or in a concentrated solution of PS in dioctylphthalate (DOP). The results indicate that γ between PEO and PS is almost independent of M of PEO in the high molecular weight region, but exhibits a minimum around M = 500. Addition of 1 wt% of P(EO-b-S) to the PEO/PS system causes a decrease of γ due to the surfactant effect of the copolymer, but γ is almost independent of further addition of the copolymer. The decrement of the interfacial tension Δγ increases with increasing molecular weight of P(EO-b-S).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 17, 9 August 2006, Pages 6236-6242
نویسندگان
, , , ,