Preparation and crystallization behavior of syndiotactic polystyrene–clay nanocomposites

Autor:	Hsin Yi Lee, Jeng-Yue Wu, Feng-Chih Chang, Chen-Rui Tseng
Rok vydání:	2001
Předmět:	Nanocomposite Materials science Polymers and Plastics Organic Chemistry Intercalation (chemistry) law.invention Dichlorobenzene chemistry.chemical_compound Montmorillonite Differential scanning calorimetry chemistry law Tacticity Materials Chemistry Polystyrene Crystallization Composite material
Zdroj:	Polymer. 42:10063-10070
ISSN:	0032-3861
DOI:	10.1016/s0032-3861(01)00568-7
Popis:	Syndiotactic polystyrene/modified-clay nanocomposites have been prepared by solution blending by mixing pure s-PS and organophilic clay with adsorbed cetyl pyridium chloride (CPC) in dichlorobenzene. The dispersability of the clay in syndiotactic polystyrene/modified-clay nanocomposites was studied using X-ray and transmission electron microscopy. The clay is well dispersed into the s-PS matrix using solution blending with scale in 1–2 nm or in a few tenths ∼100 nm depending on surfactant treatment. The CPC is partially compatible with s-PS and allows syndiotactic polystyrene chains intercalating into clay layers. The crystallization behavior of α- and β-crystals for syndiotactic polystyrene nanocomposite has been thoroughly examined using the Fourier transform infrared and differential scanning calorimetry. Our results further demonstrate that the presence of the clay plays a vital role in facilitating the formation on the thermodynamically more favorable β form crystal when the s-PS is melt- or cold-crystallized.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d47fe10f5033a53094320e19c3653be1 https://doi.org/10.1016/s0032-3861(01)00568-7 Zobrazit plný text záznamu Full Text from ScienceDirect