Ionic effects on the mechanical and swelling properties of a poly(acrylic acid/acrylamide) double crosslinking hydrogel

doi:10.1039/c8nj00920a

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Ionic effects on the mechanical and swelling properties of a poly(acrylic acid/acrylamide) double crosslinking hydrogel
	Zhang, Huijuan 1; Cheng, Yuran 1; Hou, Xinjuan 3; Yang, Biao 1; Guo, Fang 2
刊名	NEW JOURNAL OF CHEMISTRY
	2018-06-07
卷号	42 期号:11 页码:9151-9158
ISSN号	1144-0546
DOI	10.1039/c8nj00920a
通讯作者	Zhang, Huijuan(zhanghuijuan@btbu.edu.cn) ; Hou, Xinjuan(xjhou@home.ipe.ac.cn)
英文摘要	Understanding the structure-property relationships of tough double crosslinking hydrogels, especially at the molecular level, is of great importance for the rational design and wider applications of this kind of soft material. Herein, a mechanically strong poly(acrylic acid/acrylamide) (P(AA/AM)) hydrogel was fabricated, based on a double crosslinking architecture which comprised a chemically crosslinked network and a metal ion crosslinked physical network. The ionic effect, including metal ions and counter anions, on the mechanical and swelling properties of the hydrogels was investigated in detail. Importantly, it was discovered that the P(AA/AM) hydrogel immersed in 0.06 M ferric nitrate (FeCl3) exhibited a tensile strength of 1377 kPa while in ferric chloride (Fe(NO3)(3)), the tensile strength was 1471 kPa. These values were vastly superior to those obtained for the other metal salts tested. Notably, the distinct mechanical strengths of the hydrogels crosslinked by the ferric salts (FeCl3, Fe(NO3)(3), Fe-2(SO4)(3)) were investigated by molecular simulation, which demonstrated that the differing mechanical strengths arose from the varying bonding strengths between the ferric salts and AA groups. Moreover, the tough hydrogel of P(AA/AM) soaked in 0.06 M Fe(NO3)(3) displayed an equilibrium swelling ratio of only 1.14 g g(-1), which offers great promise in applications such as in cartilage and other tissues. This work gives a valuable molecular insight into the understanding and design of double crosslinking gels with high strength.
资助项目	National Nature Science Foundation of China[51473007] ; State Key Laboratory of Solid Lubrication of Lanzhou Institute of Chemical Physics[LSL-1501]
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
资助机构	National Nature Science Foundation of China ; State Key Laboratory of Solid Lubrication of Lanzhou Institute of Chemical Physics
内容类型	期刊论文
源URL	[http://ir.licp.cn/handle/362003/27218]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Zhang, Huijuan; Hou, Xinjuan
作者单位	1.Beijing Technol & Business Univ, Sch Mat & Mech Engn, Beijing 100048, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Proc & Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Huijuan,Cheng, Yuran,Hou, Xinjuan,et al. Ionic effects on the mechanical and swelling properties of a poly(acrylic acid/acrylamide) double crosslinking hydrogel[J]. NEW JOURNAL OF CHEMISTRY,2018,42(11):9151-9158.
APA	Zhang, Huijuan,Cheng, Yuran,Hou, Xinjuan,Yang, Biao,&Guo, Fang.(2018).Ionic effects on the mechanical and swelling properties of a poly(acrylic acid/acrylamide) double crosslinking hydrogel.NEW JOURNAL OF CHEMISTRY,42(11),9151-9158.
MLA	Zhang, Huijuan,et al."Ionic effects on the mechanical and swelling properties of a poly(acrylic acid/acrylamide) double crosslinking hydrogel".NEW JOURNAL OF CHEMISTRY 42.11(2018):9151-9158.