Novel, rosin-based, hydrophobically modified cationic polyacrylamide for kaolin suspension flocculation

Hydrophobically modified chitosan gauze: a novel topical hemostat.

BACKGROUND Currently, the standard of care for treating severe hemorrhage in a military setting is Combat Gauze (CG). Previous work has shown that hydrophobically modified chitosan (hm-C) has significant hemostatic capability relative to its native chitosan counterpart. This work aims to evaluate gauze coated in hm-C relative to CG as well as ChitoGauze (ChG) in a lethal in vivo hemorrhage mode...

Hydrophobically Modified Celluloses as Novel Cholesterol-lowering Polymers

Hydrophobically modified celluloses were prepared by the esterification of monocarboxycellulose (MCC) and carboxymethylcellulose (CMC) with methanol, followed by the amino-de-alkoxylation of the methyl esters with n-octadecylamine. These cellulose derivatives were fed at 30 and 60 g/kg for 4 weeks to female rats. The diets were supplemented with palm fat (60 or 50 g/kg) and cholesterol (0 or 10...

Flocculation of kaolin by waxy maize starch phosphates

Waxy maize starch phosphates were tested as flocculants in order to determine if they have the potential to replace petroleum-based polymer flocculants currently used commercially. Phosphorylation was carried out by dry heating of starches and sodium orthophosphates at 140 C for 4 h. Native and phosphorylated waxy maize starches were ineffective as flocculants for kaolin in deionized water. How...

Hydrophobically Modified Hydroxypropyl Methylcellulose in Rats

A six-month repeated-dose dermal toxicity study fo11owed by a 30-day recovery test of hydrophobically modified hydroxypropyl methylcellulose (HM-HPMC), a new ceLlulose derivative used as a thickener for topical pharmaceuticals, was conducted using rats, Aqueous paste of HM-HPMC was applied to the skin ofrats once daily at dose levels up to 60 mg/kglday, which was the highest dose that could be ...

Hydrophobically Modified Chitosan Gauze for Control of Massive Hemorrhage