Covalently cross-linked layered double hydroxide nanocomposite hydrogels with ultrahigh water content and excellent mechanical properties

doi:10.1016/j.cej.2017.10.095

CORC > 化学研究所 > 中国科学院化学研究所

	Covalently cross-linked layered double hydroxide nanocomposite hydrogels with ultrahigh water content and excellent mechanical properties
	Win, Pyaesone 1; Lin, Chang-Gen 1,2; Long, Yong 1; Chen, Wei 1; Chen, Guangming 3; Song, Yu-Fei 1,2
刊名	CHEMICAL ENGINEERING JOURNAL
	2018-03-01
卷号	335 页码:409-415
关键词	Hydrogels Layered Double Hydroxides Organic-inorganic Hybrids Nanocomposite
ISSN号	1385-8947
DOI	10.1016/j.cej.2017.10.095
英文摘要	Hydrogels with their intriguing three-dimensional (3D) cross-linked networks have found multiple applications. However, conventional chemically cross-linked hydrogels are inevitably facing with severe problems such as mechanical weakness and brittleness. In this context, we present a new class of covalently cross-linked nanocomposite (NC) hydrogels based on tris(hydroxymethyl) amino-methane (Tris)-modified layered double hydroxides (LDHs). Reaction of the resultant Tris-LDHs and acryloyl chloride gives Acryloyl-LDHs which can serve as cross-linkers for construction of 3D hydrogel networks. The resulting covalently cross-linked NC hydrogel can be stretched to more than 18 times of its original size and compressed at 90% deformation without rapture. Moreover, such hydrogel can retain as much as 97% of water, and the compressive modulus can reach to 543.7 kPa at a very low cross-linking density of 0.377 molm-3. The excellent mechanical performances are attributed to the flexible polymer chains obtained in NC hydrogels and the necking phenomenon caused by the Tris-LDHs. This work provides a new method for development of stable and mechanically strong hydrogels with high water contents.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000430700500045
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46155]
专题	中国科学院化学研究所
通讯作者	Lin, Chang-Gen; Song, Yu-Fei
作者单位	1.Beijing Inst Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China 2.Beijing Inst Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Win, Pyaesone,Lin, Chang-Gen,Long, Yong,et al. Covalently cross-linked layered double hydroxide nanocomposite hydrogels with ultrahigh water content and excellent mechanical properties[J]. CHEMICAL ENGINEERING JOURNAL,2018,335:409-415.
APA	Win, Pyaesone,Lin, Chang-Gen,Long, Yong,Chen, Wei,Chen, Guangming,&Song, Yu-Fei.(2018).Covalently cross-linked layered double hydroxide nanocomposite hydrogels with ultrahigh water content and excellent mechanical properties.CHEMICAL ENGINEERING JOURNAL,335,409-415.
MLA	Win, Pyaesone,et al."Covalently cross-linked layered double hydroxide nanocomposite hydrogels with ultrahigh water content and excellent mechanical properties".CHEMICAL ENGINEERING JOURNAL 335(2018):409-415.