Rheological Characterization of Carbopol 940 in Steady Shear and Start-up Flow Fields

نویسندگان

  • Ji-Seok Lee
  • Ki-Won Song
چکیده

Using a strain-controlled rheometer, rhelogical characterization of carbopol 940 has been made in steady shear and start-up flow fields. In this study, aqueous carbopol 940 solutions with different concentrations were used to provide a fundamental information in application of pharmaceutical and cosmetic areas.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Formulation and in vitro evaluation of nateglinide microspheres using HPMC and carbopol-940 polymers by ionic gelation method.

This study involves the design and characterization of Nateglinide (NAT) microspheres to enhance patient compliance. Ionic gelation technique was used to prepare Nateglinide Microspheres by using rate controlling polymers Carbopol-940 and Hydroxypropylmethyl cellulose (HPMC). Shape and surface were evaluated with Scanning electron microscopy (SEM). Percentage Yield, Particle size analysis, Enca...

متن کامل

Wormlike Micellar Solutions: III. VCM Model Predictions in Steady and Transient Shearing Flows

The two species, scission/reforming Vasquez-Cook-McKinley (VCM) model was formulated to describe the coupling between the viscoelastic fluid rheology and the kinetics of wormlike micellar assembly and deformation-induced rupture. The model self-consistently captures the nonlocal effects of stress-induced diffusion and has been studied in various limits for a number of canonical flow fields incl...

متن کامل

Nonlinear Viscoelastic Behaviors of Different Types of O/W Emulsion-Based Mayonnaises in Several Shear Flow Fields

In this research, the rheological behaviors of different types (normal, non-cholesterol and reduced-fat) of mayonnaises have been investigated and compared both in steady shear and oscillatory shear flow fields.

متن کامل

Development and Characterization of Bioadhesive Gel of Microencapsulated Metronidazole for Vaginal Use

The present study concerned with the development and characterization of metronidazole microcapsules prepared by thermal change method using different ratios (1:1, 1:2 and 1:4) of ethyl cellulose in order to select the best microcapsule formulation with a good encapsulation efficiency and drug release profile. The obtained microcapsules were discrete, spherical with free flowing properties and ...

متن کامل

Development and Characterization of Bioadhesive Gel of Microencapsulated Metronidazole for Vaginal Use

The present study concerned with the development and characterization of metronidazole microcapsules prepared by thermal change method using different ratios (1:1, 1:2 and 1:4) of ethyl cellulose in order to select the best microcapsule formulation with a good encapsulation efficiency and drug release profile. The obtained microcapsules were discrete, spherical with free flowing properties and ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011