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It was found that both of the native and modified collagen solutions were pseudoplastic fluids, as shown from the steady\u2010shear tests. While the storage modulus and loss modulus of collagen increased with increasing the amount of \u03b3\u2010PGA\u2010NHS, or with increasing the degree of esterification of \u03b3\u2010PGA\u2010NHS; meanwhile, the dynamic denaturation temperature determined by dynamic temperature sweep was also increased, indicating an improved thermal stability of collagen solution modified by \u03b3\u2010PGA\u2010NHS. The creep\u2013recovery measurements showed that the resistance to deformation was enhanced for modified collagen, probably due to the cross\u2010linking occurred between the \u03b5\u2010amino groups of collagen molecules and \u03b1\u2010COOH groups of \u03b3\u2010PGA\u2010NHS, as well as the electrostatic interaction and hydrogen\u2010bond interactions between the two molecules. Furthermore, the aggregation of collagen fibers was promoted due to these interactions between collagen and \u03b3\u2010PGA\u2010NHS as observed by atomic force morphology. In addition, the modified collagen exhibited good cytocompatibility as demonstrated by cell growth culturing. The obtained information was expected to give valuable clues to the design and fabrication of controlled stable collagen\u2010based products for applications in various biomedical fields.<\/jats:p>","DOI":"10.1002\/bab.1755","type":"journal-article","created":{"date-parts":[[2019,4,25]],"date-time":"2019-04-25T11:26:43Z","timestamp":1556191603000},"page":"564-573","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Insight into the rheological behaviors of a polyanionic collagen fabricated with poly(\u03b3\u2010glutamic acid)\u2010NHS ester"],"prefix":"10.1002","volume":"66","author":[{"given":"Cuicui","family":"Ding","sequence":"first","affiliation":[{"name":"College of Ecological Environment and Urban Construction Fujian University of Technology  Fuzhou People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junhui","family":"Yang","sequence":"additional","affiliation":[{"name":"College of Materials Engineering Fujian Agriculture and Forestry University  Fuzhou People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fei","family":"Lan","sequence":"additional","affiliation":[{"name":"College of Ecological Environment and Urban Construction Fujian University of Technology  Fuzhou People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhigong","family":"Zheng","sequence":"additional","affiliation":[{"name":"College of Ecological Environment and Urban Construction Fujian University of Technology  Fuzhou People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Libo","family":"Dai","sequence":"additional","affiliation":[{"name":"College of Ecological Environment and Urban Construction Fujian University of Technology  Fuzhou People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7117-8007","authenticated-orcid":false,"given":"Min","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Materials Engineering Fujian Agriculture and Forestry University  Fuzhou People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,5,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.biomaterials.2013.12.082"},{"key":"e_1_2_7_3_1","first-page":"141","volume":"39","author":"Paula B.","year":"2011","journal-title":"Biotechnol. 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