Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 132, Issue 1, Pages 145-153Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2011.11.011
Keywords
Composite materials; Nanostructures; Polymers; Thermal properties
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Funding
- National Science Council of the Republic of China (Taiwan) [NSC-99-2221-E-182-006]
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Syndiotactic polystyrene (sPS)-based nanocomposites with and without toughener inclusions were successfully prepared. One organo-montmorillonite (20A) and two styrenic elastomers (SBS and SEBS) served as the reinforcing filler and as tougheners, respectively. XRD and TEM results confirmed the achievement of intercalated and partially exfoliated sPS/20A nanocomposites. The presence of SBS or SEBS slightly depressed the dispersibility of 20A. DSC results indicated that 20A inhibited the crystallization of sPS. The presence of SBS or SEBS further retarded the crystallization of sPS; this effect was more apparent with SEBS. The presences of 20A and SBS/SEBS facilitated the formation of alpha-form sPS crystals. The thermal stability enhancement of 5PS/20A nanocomposites was confirmed, and was further improved with the inclusion of SBS or SEBS. The stiffness of sPS increased with the sole addition of 20A. The addition of SBS or SEBS greatly increased the impact strength of the composites, especially with the addition of SEBS. The achievement of toughened sPS-based nanocomposites was confirmed. (C) 2011 Elsevier B.V. All rights reserved.
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