Effect of supercritical carbon dioxide as an exfoliation aid on bio-based polyethylene terephthalate glycol-modified/clay nanocomposites

Autor:	Kwangho Jang, In-Kwon Hong, Jae Wook Lee, Sangmook Lee
Rok vydání:	2013
Předmět:	Supercritical carbon dioxide Nanocomposite Materials science Condensed Matter Physics Exfoliation joint chemistry.chemical_compound Montmorillonite chemistry Rheology Ultimate tensile strength Polyethylene terephthalate General Materials Science Composite material Dispersion (chemistry)
Zdroj:	Korea-Australia Rheology Journal. 25:145-152
ISSN:	2093-7660 1226-119X
DOI:	10.1007/s13367-013-0015-8
Popis:	Bio-based PETG (bio-based glycol modified polyethylene terephthalate, Ecozen T95) / clay (organo-modified montmorillonite, OMMT, C10A) nanocomposites were prepared by co-rotating twin screw extruder attached with supercritical carbon dioxide (scCO2) injection system. The effects of nano-clay and scCO2 on the properties of PETG/clay nanocomposites were investigated by measuring thermal, rheological, tensile, impact, and barrier properties. The thermal and mechanical properties decreased with increasing nano-clay content, but they recovered or even exceeded the properties of neat PETG as scCO2 was added. It was verified due to a good dispersion of the nano-clay in PETG matrix for PETG/clay nanocomposites by XRD, SEM, and TEM. It was thought that scCO2 could be an effective exfoliation agent for many nanocomposites systems as well as for bio-based PET/clay nanocomposites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cb84c955f5c56eb111cdce3d9dc569ce https://doi.org/10.1007/s13367-013-0015-8 Zobrazit plný text záznamu Full text from SpringerLink