Rheological Properties of Poly(acrylonitrile-co-methyl acrylate)/Clay Nanocomposites Prepared via Emulsion Polymerization

被引：1
作者：
Zengeni, Eddson [1 ]
Hartmann, Patrice C. [1 ]
Sanderson, Ronald D. [1 ]
机构：
[1] Univ Stellenbosch, Dept Chem & Polymer Sci, UNESCO Associated Ctr Macromol, ZA-7602 Matieland, South Africa
来源：
POLYMER COMPOSITES | 2011年 / 32卷 / 01期
关键词：
POLY(METHYL METHACRYLATE); MECHANICAL-PROPERTIES; MMT NANOCOMPOSITES; BARRIER PROPERTIES; COPOLYMERS; MORPHOLOGY; KINETICS; BEHAVIOR;
D O I：
10.1002/pc.21018
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Poly(acrylonitrile-co-methyl acrylate)/clay nanocomposites were prepared by free radical polymerization in emulsion using 2-acrylamido-2-methyl-1-propanesulphonic acid (AMPS) as a compatibilizer. The resultant nanocomposites were of partially exfoliated morphology despite the variations in clay content among the nanocomposites, as confirmed by transmission electron microscopy and small-angle X-ray scattering analysis. Rheological studies of these materials were carried out using parallel plate geometry. The storage modulus increased monotonically with increasing clay content throughout the frequency range studied. However, the neat copolymer, poly(acrylonitrile-co-methyl acrylate) and its nanocomposites, exhibited long relaxation behavior as the storage modulus (G') was greater than the loss modulus (G '') throughout the angular frequency range studied. The complex viscosity of the nanocomposites increased with increasing clay content and they exhibited shear-thinning behavior. Despite the enhanced rheological properties observed, the copolymer and its nanocomposites underwent structural changes during oscillatory measurements due to cyclization reactions. POLYM. COMPOS., 32:59-66, 2011. (C) 2010 Society of Plastics Engineers
引用
收藏
页码：59 / 66
页数：8
相关论文
共 41 条
[1]  
Bang YH, 1998, J APPL POLYM SCI, V68, P2205, DOI 10.1002/(SICI)1097-4628(19980627)68:13<2205::AID-APP17>3.0.CO
[2]  
2-Y
[3]   Synthesis and characterization of acrylonitrile methyl acrylate statistical copolymers as melt processable carbon fiber precursors [J].
Bhanu, VA ;
Rangarajan, P ;
Wiles, K ;
Bortner, M ;
Sankarpandian, M ;
Godshall, D ;
Glass, TE ;
Banthia, AK ;
Yang, J ;
Wilkes, G ;
Baird, D ;
McGrath, JE .
POLYMER, 2002, 43 (18) :4841-4850
[4]   Shear rheological properties of acrylic copolymers and terpolymers suitable for potentially melt processable carbon fiber precursors [J].
Bortner, MJ ;
Bhanu, V ;
McGrath, JE ;
Baird, DG .
JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 93 (06) :2856-2865
[5]   Synthesis of exfoliated PMMA/Na-MMT nanocomposites via soap-free emulsion polymerization [J].
Choi, YS ;
Choi, MH ;
Wang, KH ;
Kim, SO ;
Kim, YK ;
Chung, IJ .
MACROMOLECULES, 2001, 34 (26) :8978-8985
[6]   Synthesis of exfoliated polyacrylonitrile/Na-MMT nanocomposites via emulsion polymerization [J].
Choi, YS ;
Wang, KH ;
Xu, MZ ;
Chung, IJ .
CHEMISTRY OF MATERIALS, 2002, 14 (07) :2936-2939
[7]   Fourier transform infrared and wide-angle X-ray diffraction studies of the thermal cyclization reactions of high-molar-mass poly(acrylonitrile-co-itaconic acid) [J].
Devasia, R ;
Nair, CPR ;
Sadhana, R ;
Babu, NS ;
Ninan, KN .
JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 100 (04) :3055-3062
[8]  
Gacitua William, 2005, Maderas, Cienc. tecnol., V7, P159, DOI 10.4067/S0718-221X2005000300002
[9]   A rheological study on the kinetics of hybrid formation in polypropylene nanocomposites [J].
Galgali, G ;
Ramesh, C ;
Lele, A .
MACROMOLECULES, 2001, 34 (04) :852-858
[10]   Relationships between structure and rheology in model nanocomposites of ethylene-vinyl-based copolymers and organoclays [J].
Gelfer, MY ;
Burger, C ;
Chu, B ;
Hsiao, BS ;
Drozdov, AD ;
Si, M ;
Rafailovich, M ;
Sauer, BB ;
Gilman, JRW .
MACROMOLECULES, 2005, 38 (09) :3765-3775
12345