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	Tuning the formation and stability of microcapsules by environmental conditions and chitosan structure
	Ren, Ying1,3; Xie, Hongguo1; Liu, Xiaocen1,3; Yang, Fan2; Yu, Weiting1; Ma, Xiaojun1
刊名	International journal of biological macromolecules
	2016-10-01
卷号	91页码:1090-1100
关键词	Alginate Chitosan Microcapsules
ISSN号	0141-8130
DOI	10.1016/j.ijbiomac.2016.06.034
通讯作者	Xie, hongguo(xiehg@dicp.ac.cn) ; Yu, weiting(yuwt@dicp.ac.cn)
英文摘要	The goal of this work is to tune the formation and stability of the alginate-chitosan (ac) polyelectrolyte complexes (pecs) and microcapsules. particularly, we explore the role of the conformation of chitosan on its interaction with alginate to understand the mechanism underpinning their interactions at the molecular level. reducing the charge density by increasing ph will increase the compactness of chitosan, the values of the enthalpy (h) and stoichiometry (n) of binding between chitosan and alginate. consequently, chitosan has advantage in being adsorbed on alginate beads to form microcapsules, including the binding rate and binding amount. though the total heat release remain similar in the range of ionic strength, chitosan diffuses much easier into alginate hydrogels when in higher ionic strength. increasing ph and ionic strength both help ac microcapsules to have higher stability. the results indicate that the formation and stability of ac microcapsules are related to the rigidity and conformations of chitosan molecules. after increasing acetylation degree (da) of chitosan, the binding rate of chitosan and mechanical strength of ac microcapsules are both reduced. this work demonstrates the versatility and feasibility of tuning the formation and stability of polysaccharide microcapsules by physical factors and chitosan chemical structures. (c) 2016 elsevier b.v. all rights reserved.
WOS关键词	POLYELECTROLYTE COMPLEXES ; ALGINATE-CHITOSAN ; AQUEOUS-SOLUTION ; IONIC-STRENGTH ; BINDING ; PH ; POLYSACCHARIDES ; THERMODYNAMICS ; BIOMATERIALS ; BIOPOLYMERS
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry ; Polymer Science
WOS类目	Biochemistry & Molecular Biology ; Chemistry, Applied ; Polymer Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000382339200128
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376284
专题	中国科学院大学
通讯作者	Xie, Hongguo; Yu, Weiting
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Biomed Mat Engn, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Energy Res Resources Div, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ren, Ying,Xie, Hongguo,Liu, Xiaocen,et al. Tuning the formation and stability of microcapsules by environmental conditions and chitosan structure[J]. International journal of biological macromolecules,2016,91:1090-1100.
APA	Ren, Ying,Xie, Hongguo,Liu, Xiaocen,Yang, Fan,Yu, Weiting,&Ma, Xiaojun.(2016).Tuning the formation and stability of microcapsules by environmental conditions and chitosan structure.International journal of biological macromolecules,91,1090-1100.
MLA	Ren, Ying,et al."Tuning the formation and stability of microcapsules by environmental conditions and chitosan structure".International journal of biological macromolecules 91(2016):1090-1100.

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