Effect of sol–gel derived in situ silica on the morphology and mechanical behavior of natural rubber and acrylonitrile butadiene rubber blends

2012 ◽  
Vol 63 (3) ◽  
pp. 501-509 ◽  
Author(s):  
Bharat P. Kapgate ◽  
Chayan Das ◽  
Amit Das ◽  
Debdipta Basu ◽  
Uta Reuter ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Mechanical Behavior ◽  
Sol Gel ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Acrylonitrile Butadiene Rubber ◽  
In Situ Silica

Reinforcing efficiency and compatibilizing effect of sol–gel derived in situ silica for natural rubber/chloroprene rubber blends

RSC Advances ◽  
2014 ◽  
Vol 4 (102) ◽  
pp. 58816-58825 ◽  
Author(s):  
Bharat P. Kapgate ◽  
Chayan Das
Keyword(s):  
Natural Rubber ◽  
Sol Gel ◽  
Rubber Blends ◽  
In Situ Silica ◽  
Chloroprene Rubber ◽  
Compatibilizing Effect

The strong CR/in situ silica interaction causes filler accumulation at the interphase and enhances the compatibility and reinforcement in the NR/CR blend.

Silica and Silane Coupling Agent for in Situ Reinforcement of Acrylonitrile-Butadiene Rubber

1999 ◽  
Vol 72 (1) ◽  
pp. 119-129 ◽  
Author(s):  
K. Murakami ◽  
S. Osanai ◽  
M. Shigekuni ◽  
S. Iio ◽  
H. Tanahashi ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Sol Gel ◽  
Silica Particles ◽  
Butadiene Rubber ◽  
Acrylonitrile Butadiene Rubber ◽  
In Situ Silica ◽  
Transmission Electron ◽  
Dispersion Agent ◽  
The Relationship

Abstract In situ silica reinforcement for the acrylonitrile-butadiene rubber (NBR) vulcanizates, which were premixed with a conventional silica (VN-3) and γ-mercaptopropyltrimethoxysilane (γ-MPS), was achieved by the sol-gel reaction of tetraethoxysilane (TEOS) using ethylenediamine. It was observed that the reinforcement efficiency tended to increase with the increase of mechanically premixed conventional silica. From the observations of transmission electron microscopy and scanning electron microscopy, the simultaneous use of VN-3 and γ-MPS was found to promote the formation of large silica particles and clusters with a relatively good dispersion by the sol-gel reaction of TEOS in the NBR vulcanizate. The results of hysteresis measurements supported this promotion. It was considered to be due to the surface modification of VN-3 by the sol-gel reaction of TEOS and the presence of γ-MPS which worked as a dispersion agent for silica particles. The relationship between the mechanical properties and the morphology of the in situ silica filled vulcanizates is discussed.

Reinforcement of Acrylonitrile—Butadiene Rubber by Silica Generated in situ

1998 ◽  
Vol 71 (1) ◽  
pp. 38-52 ◽  
Author(s):  
H. Tanahashi ◽  
S. Osanai ◽  
M. Shigekuni ◽  
K. Murakami ◽  
Y. Ikeda ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hysteresis Loss ◽  
Butadiene Rubber ◽  
Acrylonitrile Butadiene Rubber ◽  
In Situ Silica ◽  
Reinforcement Efficiency ◽  
High Polarity

Abstract In situ silica reinforcement was applied to the acrylonitrile—butadiene rubber (NBR) vulcanizates. The amount of in situ silica introduced in the NBR vulcanizates was limited due to the high polarity of NBR. The presence of γ-mercaptopropyltrimethoxysilane (γ-MPS) in the NBR vulcanizate increased the conversion of TEOS in the sol-gel reaction and resulted in the higher amount of in situ silica, compared to the system without γ-MPS. The obtained silica was very fine and dispersed very homogeneously. In situ sol-gel reaction of TEOS in the NBR vulcanizates mixed with a conventional silica (VN-3) was also carried out. The reinforcement efficiency in this system increased with the increase of the amount of mechanically mixed conventional silica. Interestingly, the hysteresis loss decreased by the in situ filling of silica.

In situ silica reinforcement of natural rubber by sol–gel process via rubber solution

2009 ◽  
Vol 52 (2) ◽  
pp. 219-227 ◽  
Author(s):  
Benjawan Chaichua ◽  
Pattarapan Prasassarakich ◽  
Sirilux Poompradub
Keyword(s):  
Natural Rubber ◽  
Sol Gel ◽  
In Situ Silica ◽  
Sol Gel Process

scholarly journals Gas Barrier, Rheological and Mechanical Properties of Immiscible Natural Rubber/Acrylonitrile Butadiene Rubber/Organoclay (NR/NBR/Organoclay) Blend Nanocomposites

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2654 ◽  
Author(s):  
Hanna J. Maria ◽  
Martin George Thomas ◽  
Marco Morreale ◽  
Francesco Paolo La Mantia ◽  
Ange Nzihou ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Gas Permeability ◽  
Barrier Properties ◽  
Filler Loading ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Acrylonitrile Butadiene Rubber ◽  
Blend Composition ◽  
Rubber Component ◽  
Permeability Studies

In this paper, gas permeability studies were performed on materials based on natural rubber/acrylonitrile butadiene rubber blends and nanoclay incorporated blend systems. The properties of natural rubber (NR)/nitrile rubber (NBR)/nanoclay nanocomposites, with a particular focus on gas permeability, are presented. The measurements of the barrier properties were assessed using two different gases—O2 and CO2—by taking in account the blend composition, the filler loading and the nature of the gas molecules. The obtained data showed that the permeability of gas transport was strongly affected by: (i) the blend composition—it was observed that the increase in acrylonitrile butadiene rubber component considerably decreased the permeability; (ii) the nature of the gas—the permeation of CO2 was higher than O2; (iii) the nanoclay loading—it was found that the permeability decreased with the incorporation of nanoclay. The localization of nanoclay in the blend system also played a major role in determining the gas permeability. The permeability of the systems was correlated with blend morphology and dispersion of the nanoclay platelets in the polymer blend.

In situ silica reinforcement of methyl methacrylate grafted natural rubber by sol–gel process

2011 ◽  
Vol 58 (2) ◽  
pp. 407-418 ◽  
Author(s):  
Natchamon Watcharakul ◽  
Sirilux Poompradub ◽  
Pattarapan Prasassarakich
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Sol Gel ◽  
In Situ Silica ◽  
Sol Gel Process
Sign in / Sign up

Export Citation Format

Share Document