期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
卷 53, 期 1, 页码 78-92出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00222348.2013.789312
关键词
crystallization; melt processing; MMT; nanocomposite; poly(vinyl alcohol); solid-state shear
资金
- National Natural Science Foundation of China [50833003, 51010004]
- International Collaboration Program from the Ministry of Science & Technology of China [2010 DFA54460]
Poly(vinyl alcohol) (PVA)/montmorillonite (MMT) nanocomposites were prepared by combining solid-state shear milling ((SM)-M-3) technology with melt intercalation. Compared with the composite obtained by simple melt intercalation, more MMT layers were exfoliated and apparently oriented along the injection molding direction in the nanocomposite prepared by combining (SM)-M-3 technology and melt intercalation, which greatly increased the orientation degree of MMT, resulting in the greater interactions between PVA and MMT layers. Simultaneously, this also promoted the orientation of PVA molecules and produced effective nucleation of the crystallization of PVA. Consequently, the thermal stability and mechanical properties of PVA were obviously improved. For instance, when the MMT content was 3wt%, the tensile strength and modulus of the nanocomposite with MMT prepared by (SM)-M-3 were 98.9 MPa and 3.1 GPa, respectively, increasing by 52% and 63.2% compared with PVA.
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