PP/clay nanocomposites prepared by grafting-melt intercalation
Liu, XH; Wu, QJ
Source PublicationPOLYMER
AbstractPolypropylene (PP)/clay nanocomposites (PPCN) were prepared via grafting-melt compounding by using a new kind of co-intercalation organophilic clay which had a larger interlayer spacing than the ordinarily organophilic clay only modified by alkyl ammonium. One of the co-intercalation monomers was unsaturated so it could tether on the PP backbone by virtue of a grafting reaction. The larger interlayer spacing and strong interaction caused by grafting can improve the dispersion effect of silicate layers in the PP matrix, which was confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The mechanical properties of PPCN were improved with the addition of clay. The incorporation of silicate layers also gave rise to a considerable increase of the storage modulus (stiffness) and a decrease of the tan delta value, demonstrating the reinforcing effect of clay on the PP matrix. Besides, the glass transition temperature (T-g) of PPCN decreased in the presence of the silicate layers. The addition of clay did not change the crystal structure of PP, however silicate layers acted as nucleating agents for the crystallization of PP. (C) 2001 Elsevier Science Ltd. All rights reserved.
KeywordPp/clay Nanocomposite Organophilic Clay Dispersion
Indexed BySCI
WOS IDWOS:000171091600018
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Cited Times:463[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLiu, XH
Affiliation1.Lulea Univ Technol, Div Polymer Engn, Dept Mat & Mfg Engn, SE-97187 Lulea, Sweden
2.Chinese Acad Sci, Inst Chem, State Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Liu, XH,Wu, QJ. PP/clay nanocomposites prepared by grafting-melt intercalation[J]. POLYMER,2001,42(25):10013-10019.
APA Liu, XH,&Wu, QJ.(2001).PP/clay nanocomposites prepared by grafting-melt intercalation.POLYMER,42(25),10013-10019.
MLA Liu, XH,et al."PP/clay nanocomposites prepared by grafting-melt intercalation".POLYMER 42.25(2001):10013-10019.
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