In situ Interlamellar Production of Amide Based Functional Copolymer/Clay Nanocomposites

2022 ◽  
Author(s):  
Serap Kavlak
Keyword(s):  
Clay Nanocomposites ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Organically Modified ◽  
Citraconic Anhydride ◽  
Mmt Clay

Functional amide based copolymer/clay nanocomposites were synthesized by in situ radical-initiated interlamellar copolymerization from acrylamide and citraconic anhydride monomers in the presence of organically modified montmorillonite (O-MMT) clay. To investigate...

Nanocomposites Based on Montmorillonite/Acrylic Copolymer for Aqueous Coating of Soft Surfaces

2009 ◽  
Vol 151 ◽  
pp. 129-134 ◽  
Author(s):  
Onur Yılmaz ◽  
Aurica P. Chiriac ◽  
Catalina Natalia Cheaburu ◽  
Loredana E. Nita ◽  
Gürbüz Gülümser ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Layered Silicate ◽  
Acrylic Copolymer ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Film Forming ◽  
Organically Modified ◽  
Polymerization Method ◽  
Structural Characterizations

Nanocomposites based on layered silicate organically modified montmorillonite (Cloisite 20A) and acrylic comonomers (butyl acrylate and methyl methacrylate) were prepared by simple “in situ” batch emulsion polymerization method. The particle size and zeta potential of the emulsions were analyzed. The structural characterizations of the nanocomposites were performed by FTIR, thermal behaviors of the films were investigated by DSC, mechanical properties of the films were tested by DMA and intercalation success was viewed by XRD. The mechanical properties of the nanocomposites were improved significantly especially at the temperatures above Tg. The ultrasonication process was found to be useful for increasing the homogeneity of the emulsions and intercalation success. The obtained nanocomposite emulsions were applied on garment leathers in a finishing formulation as aqueous binders sharing good film forming ability and elasticity.

scholarly journals Preparation of Polyimide-Clay Nanocomposites and Their Performance

2009 ◽  
Vol 1 (2) ◽  
pp. 326-333 ◽  
Author(s):  
S. M. M. Alam
Keyword(s):  
Tensile Modulus ◽  
Clay Nanocomposites ◽  
Gravimetric Analysis ◽  
Modified Clay ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Organically Modified ◽  
Layered Clay ◽  
Tetracarboxylic Dianhydride ◽  
Thermal Stability Of

A series of polyimide (PI)-organically modified clay nanocomposites were made to enhance tensile modulus, thermal stability of PI. PI was made from 3, 3', 4, 4'-biphenyl tetracarboxylic dianhydride (BPDA), p-phenylediamine (PDA).  Montmorillonite (MMT), one type of layered clay, was treated by dodecylamine salt.  XRD indicated that organically modified montmorillonite (OMMT) layers were exfoliated and dispersed into PI-film.  Tensile measurements indicated that small amount of OMMT (up to 3%) increased tensile modulus nicely.  The glass transition temperatures (Tg) of the nano-composites are higher than those of pristine PI.  Thermal gravimetric analysis (TGA) showed that nanocomposites have higher decomposition temperatures in comparison with the original PI.  Keywords: Polyimide; Organically modified clay; Nanocomposites; Dodecylamine. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i2.2297

Effect of Surface Characteristics on Polystyrene/Clay Nanocomposite via Emulsion Polymerization

2006 ◽  
Vol 111 ◽  
pp. 187-190 ◽  
Author(s):  
B.J. Park ◽  
Hyoung Jin Choi
Keyword(s):  
Emulsion Polymerization ◽  
Surface Characteristics ◽  
Clay Nanocomposites ◽  
X Ray Diffraction ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Transmission Electron ◽  
Organically Modified ◽  
Plate Geometry ◽  
Effect Of Surface

Polystyrene/clay nanocomposite with organically modified montmorillonite was synthesized via emulsion polymerization. Organic styrene monomer was first intercalated into intergalley of the clay hosts, followed by a typical emulsion polymerization with surfactant and initiator. To investigate the effect of clay loading, we also prepared PS/clay nanocomposites with different clay contents. Wide angle X-ray diffraction (XRD) and transmission electron microscopy (TEM) showed that the emulsion polymerization of PS in the presence of clay produces partially exfoliated and intercalated nanocomposites. In order to study their rheological properties, the melt pallets of composite materials were prepared and measured via a rotational rheometer with a parallel plate geometry.

Sign in / Sign up

Export Citation Format

Share Document