PREPARATION AND PROPERTIES OF LAPONITE/POLYURETHANE NANOCOMPOSITES

doi:10.3724/SP.J.1105.2013.13004

CORC > 化学研究所 > 中国科学院化学研究所

	PREPARATION AND PROPERTIES OF LAPONITE/POLYURETHANE NANOCOMPOSITES
	Zhang, An-su 1,2; Wang, Dong 2; Yang, Xiao-li 2; Wu, Jun-jie 2; Zhu, Cai-zhen 2; Yang, Shu-guang 1; Ma, Jing-hong 1; Xu, Jian 1,2
刊名	ACTA POLYMERICA SINICA
	2013-07-20
期号	7 页码:943-948
关键词	Polyurethane Laponite Nanocomposites Solvent-exchange Approach Ultrasound
ISSN号	1000-3304
DOI	10.3724/SP.J.1105.2013.13004
英文摘要	Laponite/polyurethane nanocomposites were successfully prepared by following two steps: (1) solvent-exchange approach to efficiently exfoliate Laponite into N, N-dimethyl acetamide (DMAC) solvent; (2) under ultrasound insert Laponite into polyurethane macromolecules. The structure and properties of the resulting nanocomposites were characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), thermogravimeric analysis (TGA), differential scanning calorimetry (DSC), thermodynamic mechanical analysis (DMA) and tensile testing. The results of TEM and AFM indicated that the most of Laponite was fully exfoliated into individual layers and uniformly dispersed in the polyurethane matrix. The Laponite platelets preferentially reinforce the hard segments or micro-domains of polyurethane because of the similar characteristic dimensions of Laponite and hard micro-domains and the hydrogen bond interaction,which was also further confirmed by DMA and DSC. The tensile testing results showed that the incorporation of Laponite into PU gave rise to significant improvements in mechanical properties, including tensile modulus, tensile strength and ultimate elongation. The hierarchical order induced by the addition of discotic Laponite platelets creates a percolated network that significantly improves the stiffness and toughness of the nanocomposites without reducing their extensibility.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000323400300018
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/53727]
专题	中国科学院化学研究所
通讯作者	Zhang, An-su
作者单位	1.Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, An-su,Wang, Dong,Yang, Xiao-li,et al. PREPARATION AND PROPERTIES OF LAPONITE/POLYURETHANE NANOCOMPOSITES[J]. ACTA POLYMERICA SINICA,2013(7):943-948.
APA	Zhang, An-su.,Wang, Dong.,Yang, Xiao-li.,Wu, Jun-jie.,Zhu, Cai-zhen.,...&Xu, Jian.(2013).PREPARATION AND PROPERTIES OF LAPONITE/POLYURETHANE NANOCOMPOSITES.ACTA POLYMERICA SINICA(7),943-948.
MLA	Zhang, An-su,et al."PREPARATION AND PROPERTIES OF LAPONITE/POLYURETHANE NANOCOMPOSITES".ACTA POLYMERICA SINICA .7(2013):943-948.