title: pH-responsive swelling behavior of collagen complex materials.
abstract: This article deals with an natural collagen blended with chitosan, poly(vinyl alcohol)(PVA). We investigated the swelling properties of collagen and collagen complex in the solution with different pH, and the swelling/deswelling behavior of collagen and collagen-chitosan complex when changing the pH of the medium from 5.4 to 1.8 and in the reverse. The results show that the swelling degree of collagen and collagen complex are dependent to pH of the solution, and the swelling behavior of collagen and collagen-chitosan complex are pH-responsive.
authors.affiliation: Tianjin University, PR China.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Zhou
authors.forename: X
authors.initials: X
authors.lastname: Wu
authors.forename: K D
authors.initials: KD
authors.lastname: Yao
mesh_terms: D000042:Absorption; D001672:Biocompatible Materials / Q000378:metabolism; D002686:Chitin / Q000031:analogs & derivatives / Q000378:metabolism; D048271:Chitosan; D003094:Collagen / Q000378:metabolism*; D016503:Drug Delivery Systems; D006863:Hydrogen-Ion Concentration; D008968:Molecular Conformation; D011142:Polyvinyl Alcohol / Q000378:metabolism; D012996:Solutions; D013997:Time Factors; D014867:Water / Q000378:metabolism
chemical_list: D001672:Biocompatible Materials; D012996:Solutions; D014867:Water; D002686:Chitin; D011142:Polyvinyl Alcohol; D003094:Collagen; D048271:Chitosan