A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sepiolite / poly-3-hydroxyoctanoate nanocomposites: Effect of clay content on physical and biodegradation properties
https://orcid.org/0000-0002-7129-315X
Abstract Vinlytrimethoxy silane (VTMS) was grafted onto the pristine sepiolite. This VTMS containing sepiolite (VTMS-g-Sep) was used to prepare sepiolite/poly-3-hydroxyoctanoate (Sep/PHO) nanocomposites sheets by melt blending technique. Fourier transform infrared (FTIR) spectroscopy showed the formation of siloxane linkages in nanocomposites. Wide angle x-ray diffraction analysis indicated the formation of new crystal in nanocomposites. Thermal analysis demonstrated an increase in melting temperature of nanocomposite sheets. An increase of 1.4 and 16 folds in tensile strength and elongation at break of Sep/PHO nanocomposites was observed in comparison to PHO alone. The degradation studies of Sep/PHO nanocomposite were carried out both under in-vitro conditions and soil. Scanning electron microscopy showed the formation of agglomerates, grooves, and pits on the surface of Sep/PHO nanocomposite sheets buried in soil. FTIR analysis of the Sep/PHO nanocomposite sheets buried in soil showed a decrease in the intensities of the characteristic absorption bands at 2948 cm−1 (anti-symmetric stretching vibrations of the CH bonds) and 1730 cm−1 (carbonyl CO stretching vibration). While, intensities of absorption bands at 3670–3070 cm−1 (OH stretching vibrations) and 1050–1150 cm−1 (CO bending vibration) were increased after 90 days of soil burial.
Highlights Vinyl trimethoxy silane was grafted on sepiolite. The clay polymer nanocomposites were prepared by melt blending technique. Thermal and mechanical properties of nanocomposites were significantly enhanced. The biodegradation of nanocomposites was evident under in-vitro conditions and soil.
Sepiolite / poly-3-hydroxyoctanoate nanocomposites: Effect of clay content on physical and biodegradation properties
https://orcid.org/0000-0002-7129-315X
Abstract Vinlytrimethoxy silane (VTMS) was grafted onto the pristine sepiolite. This VTMS containing sepiolite (VTMS-g-Sep) was used to prepare sepiolite/poly-3-hydroxyoctanoate (Sep/PHO) nanocomposites sheets by melt blending technique. Fourier transform infrared (FTIR) spectroscopy showed the formation of siloxane linkages in nanocomposites. Wide angle x-ray diffraction analysis indicated the formation of new crystal in nanocomposites. Thermal analysis demonstrated an increase in melting temperature of nanocomposite sheets. An increase of 1.4 and 16 folds in tensile strength and elongation at break of Sep/PHO nanocomposites was observed in comparison to PHO alone. The degradation studies of Sep/PHO nanocomposite were carried out both under in-vitro conditions and soil. Scanning electron microscopy showed the formation of agglomerates, grooves, and pits on the surface of Sep/PHO nanocomposite sheets buried in soil. FTIR analysis of the Sep/PHO nanocomposite sheets buried in soil showed a decrease in the intensities of the characteristic absorption bands at 2948 cm−1 (anti-symmetric stretching vibrations of the CH bonds) and 1730 cm−1 (carbonyl CO stretching vibration). While, intensities of absorption bands at 3670–3070 cm−1 (OH stretching vibrations) and 1050–1150 cm−1 (CO bending vibration) were increased after 90 days of soil burial.
Highlights Vinyl trimethoxy silane was grafted on sepiolite. The clay polymer nanocomposites were prepared by melt blending technique. Thermal and mechanical properties of nanocomposites were significantly enhanced. The biodegradation of nanocomposites was evident under in-vitro conditions and soil.
Sepiolite / poly-3-hydroxyoctanoate nanocomposites: Effect of clay content on physical and biodegradation properties
https://orcid.org/0000-0002-7129-315X
Abstract Vinlytrimethoxy silane (VTMS) was grafted onto the pristine sepiolite. This VTMS containing sepiolite (VTMS-g-Sep) was used to prepare sepiolite/poly-3-hydroxyoctanoate (Sep/PHO) nanocomposites sheets by melt blending technique. Fourier transform infrared (FTIR) spectroscopy showed the formation of siloxane linkages in nanocomposites. Wide angle x-ray diffraction analysis indicated the formation of new crystal in nanocomposites. Thermal analysis demonstrated an increase in melting temperature of nanocomposite sheets. An increase of 1.4 and 16 folds in tensile strength and elongation at break of Sep/PHO nanocomposites was observed in comparison to PHO alone. The degradation studies of Sep/PHO nanocomposite were carried out both under in-vitro conditions and soil. Scanning electron microscopy showed the formation of agglomerates, grooves, and pits on the surface of Sep/PHO nanocomposite sheets buried in soil. FTIR analysis of the Sep/PHO nanocomposite sheets buried in soil showed a decrease in the intensities of the characteristic absorption bands at 2948 cm−1 (anti-symmetric stretching vibrations of the CH bonds) and 1730 cm−1 (carbonyl CO stretching vibration). While, intensities of absorption bands at 3670–3070 cm−1 (OH stretching vibrations) and 1050–1150 cm−1 (CO bending vibration) were increased after 90 days of soil burial.
Highlights Vinyl trimethoxy silane was grafted on sepiolite. The clay polymer nanocomposites were prepared by melt blending technique. Thermal and mechanical properties of nanocomposites were significantly enhanced. The biodegradation of nanocomposites was evident under in-vitro conditions and soil.
Sepiolite / poly-3-hydroxyoctanoate nanocomposites: Effect of clay content on physical and biodegradation properties
Masood, Farha (author) / Haider, Hasnain (author) / Yasin, Tariq (author)
Applied Clay Science ; 175 ; 130-138
2019-04-11
9 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
Nanocomposites of ABS and sepiolite: Study of different clay modification processes
| British Library Online Contents | 2012
Sepiolite needle-like clay for PA6 nanocomposites: An alternative to layered silicates?
| British Library Online Contents | 2009
Characterization and properties of sepiolite/polyurethane nanocomposites
| British Library Online Contents | 2007
Study of spatial distribution of sepiolite in sepiolite/polyamide6,6 nanocomposites
| Online Contents | 2016