Polymer-layered silicate nanocomposites: in situ intercalative polymerization of .epsilon.-caprolactone in layered silicates

1993 ◽  
Vol 5 (8) ◽  
pp. 1064-1066 ◽  
Author(s):  
Phillip B. Messersmith ◽  
Emmanuel P. Giannelis
Keyword(s):  
Layered Silicate ◽  
Layered Silicates ◽  
Silicate Nanocomposites ◽  
Intercalative Polymerization

Evaluation of an alternative modification route for layered silicates and synthesis of poly(styrene) layered silicate nanocomposites by in-situ suspension polymerisation

2007 ◽  
Vol 14 (4) ◽  
pp. 361-386 ◽  
Author(s):  
Christopher Mark Liauw ◽  
Graham Clayton Lees ◽  
Roger Norman Rothon ◽  
Arthur Norman Wilkinson ◽  
Pipat Limpanapittayatorn
Keyword(s):  
Layered Silicate ◽  
Layered Silicates ◽  
Silicate Nanocomposites

Panoptically exfoliated morphology of chlorinated polyethylene (CPE)/ethylene methacrylate copolymer (EMA)/layered silicate nanocomposites by novel in situ covalent modification using poly(ε-caprolactone)

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38209-38222 ◽  
Author(s):  
Purabi Bhagabati ◽  
Tapan Kumar Chaki ◽  
Dipak Khastgir
Keyword(s):  
Thermal Properties ◽  
Layered Silicate ◽  
Covalent Modification ◽  
Layered Silicates ◽  
Mechanical And Thermal Properties ◽  
Chlorinated Polyethylene ◽  
Silicate Nanocomposites ◽  
Methacrylate Copolymer ◽  
Cloisite 20A

Exfoliated morphology of covalently modified Cloisite 20A and 30B leading to phenomenal mechanical and thermal properties of C60E40/layered silicates.

scholarly journals UHMWPE-layered silicate nanocomposites by in situ polymerization with tris(pyrazolyl)borate titanium/clay catalyst

2009 ◽  
Vol 20 (3) ◽  
pp. 472-477 ◽  
Author(s):  
Fernando Junges ◽  
Mariana S. Beauvalet ◽  
Bárbara C. Leal ◽  
Adriana C. A. Casagrande ◽  
Fábio F. Mota ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Layered Silicate ◽  
Silicate Nanocomposites ◽  
Clay Catalyst

Biodegradable Polyester / Layered Silicate Nanocomposites

2002 ◽  
Vol 740 ◽  
Author(s):  
Pralay Maiti ◽  
Carl A. Batt ◽  
Emmanuel P. Giannelis
Keyword(s):  
Mechanical Properties ◽  
Storage Modulus ◽  
Layered Silicate ◽  
Layered Silicates ◽  
Melt Extrusion ◽  
Biodegradable Polyester ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Silicate Nanocomposites ◽  
Organically Modified

ABSTRACTNanocomposites of α-hydroxy polyester, polylactide (PLA) and β-hydroxy polyester, polyhydroxybutyrate (PHB) with layered silicates have been successfully prepared by melt extrusion of PLA and PHB with organically modified montmorillonite (MMT) and fluoromica. The mechanical properties of the nanocomposites are improved compared to the neat polymers. Storage modulus increase up to 40% compared with the pure polymers by adding only 2–3 wt% nanoclay. Biodegradation can be controlled by the choice of the nanoclay used.

Processing Characteristics of Layered Silicate Nanocomposites With Application to Blown Film

2002 ◽  
Author(s):  
Taner E. Dirama ◽  
Lloyd A. Goettler
Keyword(s):  
Bubble Formation ◽  
Layered Silicate ◽  
Polyamide 6 ◽  
Film Blowing ◽  
Rheological Measurements ◽  
Processing Window ◽  
Dsc Measurements ◽  
Silicate Nanocomposites ◽  
Blown Film

The aim of this study is to investigate the film blowing processing of various polyamide 6-based layered silicate nanocomposites (LSN’s) and to correlate their processing behaviors to the underlying rheology and structure. In-situ polymerized nanocomposites were found to possess a wider processing window compared to the base PA6. Shear and dynamic rheological measurements were employed to correlate the rheological behavior of the nanocomposites to the bubble formation and stability in the film blowing process. The in-situ plymerized LSN melts having higher elastic modulus (G′) were found to perform better in the film blowing process. DSC measurements indicated that nanoclays induce the γ type of crystallinity, which may also play a role in film blowing behavior.

Biodegradable Nanocomposites of Poly(hydroxybutyrate-co-hydroxyvalerate): The Effect of Nanoparticles

2008 ◽  
Vol 8 (4) ◽  
pp. 1858-1866 ◽  
Author(s):  
Pralay Maiti ◽  
Jaya P. Prakash Yadav
Keyword(s):  
Mechanical Properties ◽  
Layered Silicate ◽  
Layered Silicates ◽  
Thermal And Mechanical Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Silicate Nanocomposites ◽  
Transmission Electron ◽  
Superior Mechanical Properties ◽  
Biodegradable Nanocomposites

Copolymer of hydroxybutyrate and hydroxyvalerate, P(HB-HV)/layered silicate or hydroxyapatite nanocomposites were prepared via melt extrusion. The nanostructure, as observed from wide-angle X-ray diffraction and transmission electron microscopy, indicate intercalated hybrids for layered silicates. Hydroxyapatite of nanometer dimension is uniformly distributed in matrix copolymer. The nanohybrids show significant improvement in thermal and mechanical properties of the copolymer as compared to the neat copolymer. The layered silicate nanocomposites exhibit superior mechanical properties as compared to hydroxyapatite nanohybrid. The thermal expansion coefficient is significantly reduced in nanohybrids. The biodegradability of pure copolymer and its nanocomposites were studied at room temperatures under controlled conditions in compost media. The rate of biodegradation of copolymer is enhanced dramatically in the nanohybrids. Hydroxyapatite hybrid shows highest rate of biodegradation. The change in biodegradation is streamlined in terms of nature of nanoparticles used to prepare hybrids.

Kaolin-Based Geopolymer Filled Epoxy-Layered Silicates: Compressive Properties

2015 ◽  
Vol 754-755 ◽  
pp. 220-224
Author(s):  
Yusrina Mat Daud ◽  
Kamarudin Hussin ◽  
Che Mohd Ruzaidi ◽  
Azlin Fazlin Osman ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Layered Silicate ◽  
Qualitative Evaluation ◽  
Layered Silicates ◽  
Compressive Properties ◽  
Compressive Test ◽  
Silicate Nanocomposites ◽  
Nanocomposite System ◽  
Dimensional Shape ◽  
Three Dimensional Shape

The present work aimed to study the effects of kaolin-based geopolymers in epoxy-layered silicate nanocomposites using a compressive test. A series of nanocomposites with kaolin-based geopolymers containing 1-7 phr content were prepared. A qualitative evaluation of the three-dimensional shape of a kaolin-based geopolymer surface and origin was characterised using the scanning electron microscopy (SEM). It was discovered that the addition of kaolin based geopolymer at the beginning, in low phr content, displayed a lower compressive strength than nanocomposites without kaolin based geopolymer filled. However, the compressive properties unexpectedly increased at 3phr of kaolin geopolymer content compared to nanocomposites without kaolin. This illustrated that the incorporation of kaolin geopolymers in the nanocomposite system can potentially improved the mechanical properties of the epoxy resin, thereby needs further exploration.

Structure and properties of layered silicate nanocomposites based on polyamide-6 obtained by polymerization in situ and melt blending

2013 ◽  
Vol 8 (11-12) ◽  
pp. 765-772 ◽  
Author(s):  
S. V. Cherdyntseva ◽  
S. I. Belousov ◽  
S. V. Krasheninnikov ◽  
A. L. Vasil’ev ◽  
A. S. Orekhov ◽  
...  
Keyword(s):  
Layered Silicate ◽  
Polyamide 6 ◽  
Melt Blending ◽  
Structure And Properties ◽  
Silicate Nanocomposites
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