Rheological Characterization of Topical Carbomer Gels Neutralized to Different pH
نویسندگان
چکیده
منابع مشابه
Small-angle X-ray scattering and rheological characterization of alginate gels. 3. Alginic acid gels.
Alginic acid gels were studied by small-angle X-ray scattering and rheology to elucidate the influence of alginate chemical composition and molecular weight on the gel elasticity and molecular structure. The alginic acid gels were prepared by homogeneous pH reduction throughout the sample. Three alginates with different chemical composition and sequence, and two to three different molecular wei...
متن کاملComparison between Neutral Gels and Neutralized Polyelectrolyte Gels in the Presence of Divalent Cations
Introduction In the past decade several investigations have been reported on various hydrogels,1-3 particularly neutral polymer gels [e.g., poly(acrylamide) or poly(vinyl alco hol)] and weakly charged polyelectrolytes [e.g., poly (acrylic acid) or poly(styrenesulfonate)]. Less attention has been paid to neutralized polyelectrolytes in the presence of added salt. It is generally understood tha...
متن کاملNotes Comparison between Neutral Gels and Neutralized Polyelectrolyte Gels in the Presence of Divalent Cations
Introduction In the past decade several investigations have been reported on various hydrogels,1-3 particularly neutral polymer gels [e.g., poly(acrylamide) or poly(vinyl alcohol)] and weakly charged polyelectrolytes [e.g., poly(acrylic acid) or poly(styrenesulfonate)]. Less attention has been paid to neutralized polyelectrolytes in the presence of added salt. It is generally understood that fu...
متن کاملFactors Affecting Electro-Actuation Rate in Partially Neutralized Polyelectrolytes Gels
Polyelectrolyte networks composed of poly(acrylic acid) (PAAc) cross-linked with poly(ethylene glycol dimethacrylate) (PEGDA) are sensitive to electrical stimuli, allowing potential use as soft actuators. In our studies, PAAc was prepared via radical polymerization using UV irradiation from pregel solutions with independent variation of the crosslinking density, the extent of neutralization, as...
متن کاملEntrapment of probiotics in water extractable arabinoxylan gels: rheological and microstructural characterization.
Due to their porous structure, aqueous environment and dietary fiber nature arabinoxylan (AX) gels could have potential applications for colon-specific therapeutic molecule delivery. In addition, prebiotic and health related effects of AX have been previously demonstrated. It has been also reported that cross-linked AX can be degraded by bacteria from the intestinal microbiota. However, AX gels...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Pharmaceutical Research
سال: 2004
ISSN: 0724-8741
DOI: 10.1023/b:pham.0000033006.11619.07