Polynaphthoxazine-montmorillonite nanocomposites: Synthesis and characterization

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	Polynaphthoxazine-montmorillonite nanocomposites: Synthesis and characterization
	Wang, CY; Zhao, T; Han, B; Ke, YC
刊名	ACTA POLYMERICA SINICA
	2002-04-01
期号	2 页码:217-220
关键词	Naphthoxazines Montmorillonite Nanocomposites
ISSN号	1000-3304
英文摘要	A new class of phenolic-like thermosetting resins based on the ring-opening polymerization of naphthoxazine precursor exhibits some unique properties, including: no by-product releasing during curing reactions; near-zero shrinkage and excellent mechanical properties. Polynaphthoxazines-clay hybrid nanocomposites were prepared from I 5-dihydroxynaphthalene, aniline, formaldehyde and different proportion montmorillonite ( MMT) by in-situ reaction in ethanol. H-1-Nuclear Magnetic Resonance (H-1-NMR), X-ray Diffraction Analysis (XRD), Thermogravimetry (TGA) and Transmission Electron Microscopy (TEM) were applied to characterize the nanocomposites. H-1-NMR spectrum of naphthoxazine from the nanocomposites was identical to that of the pristine naphthoxazine, indicating the presence of MMT didn't change the chemical structure of the product. The spaces of silicate layers of montmorillonite in the composites were investigated by using X-ray diffractometer. It was found that exfoliation structure was formed after in-situ synthesis reaction and was remained after being cured. The TEM results suggested that an exfoliated poly-naphthoxazine-montmorillonite nanocomposite was successfully achieved. Dynamic TGA showed that only very small amount of clay is effective to improve the weight residues for nanocomposites. The char yield at 700degreesC increased by ca. 10% with 5 wt% MMT content in the nanocomposite and reached 65%. The confined crystallization behavior of the system was discussed.
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000175207200017
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/78775]
专题	中国科学院化学研究所
通讯作者	Wang, CY
作者单位	Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, CY,Zhao, T,Han, B,et al. Polynaphthoxazine-montmorillonite nanocomposites: Synthesis and characterization[J]. ACTA POLYMERICA SINICA,2002(2):217-220.
APA	Wang, CY,Zhao, T,Han, B,&Ke, YC.(2002).Polynaphthoxazine-montmorillonite nanocomposites: Synthesis and characterization.ACTA POLYMERICA SINICA(2),217-220.
MLA	Wang, CY,et al."Polynaphthoxazine-montmorillonite nanocomposites: Synthesis and characterization".ACTA POLYMERICA SINICA .2(2002):217-220.