Performance of poly(ehtylene-co-vinyl acetate) nanocomposites using distinct clays

被引：10

作者：

Pistor, Vinicios ^{[1
]}

Ornaghi, Heitor Luiz, Jr. ^{[2
]}

Ferreira, Carlos Arthur ^{[2
]}

Zattera, Ademir Jose ^{[1
]}

机构：

[1] Univ Caxias do Sul, LPOL, Caxias Do Sul, RS, Brazil

[2] Univ Fed Rio Grande do Sul, PPGEM, Porto Alegre, RS, Brazil

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2012年 / 125卷

关键词：

nanocomposites; viscoelasticity; physical interactions; relaxation and retardation functions; REGULARIZATION METHOD; RHEOLOGICAL BEHAVIOR; MORPHOLOGY; RELAXATION; SHEAR;

D O I：

10.1002/app.34804

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This study aimed to evaluate the performance of EVA nanocomposites with distinct clays. Three different types of nanoclays were used (Na+, 15A, and 30B) at a processing speed of 400 rpm. By DMA, an increase in the storage and loss moduli was found, as well as lower peak height and peak width at half-height for the nanocomposites containing 15A clay. Also, in rheometry analysis, higher moduli values were obtained for the 15A clay nanocomposite. The relaxation and retardation spectra showed three distinct peaks for the nanocomposites containing the organophilic clays. Finally, the XRD and TEM analysis showed a microcomposite formation, intercalated and exfoliated structure for the Na+, 15A, and 30B nanocomposites, respectively. These results possibility a greater understanding of the interaction effects between the intercalated (15A) and exfoliated (30B) clays and the influence of the type of modifier in the nanocomposites studied. (C) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

引用

页码：E462 / E470

页数：9

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