The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2015
Filed:
Mar. 21, 2011
Richard A. Venditti, Raleigh, NC (US);
Joel J. Pawlak, Raleigh, NC (US);
Abdus Salam, Raleigh, NC (US);
Khaled Fathy El-tahlawy, Raleigh, NC (US);
Richard A. Venditti, Raleigh, NC (US);
Joel J. Pawlak, Raleigh, NC (US);
Abdus Salam, Raleigh, NC (US);
Khaled Fathy El-Tahlawy, Raleigh, NC (US);
North Carolina State University, Raleigh, NC (US);
Abstract
Compositions of matter are provided that include chitosan and a modified carbohydrate. The modified carbohydrate includes a carbohydrate component and a cross linking agent. The modified carbohydrate has increased carboxyl content as compared to an unmodified counterpart carbohydrate. A carboxyl group of the modified carbohydrate is covalently bonded with an amino group of chitosan. The compositions of matter provided herein may include cross linked starch citrate-chitosan and cross linked hemicellulose citrate-chitosan, including foams thereof. These compositions yield excellent absorbency and metal chelation properties. Methods of making cross linked modified carbohydrate-chitosan compounds are also provided.