scholarly journals A new strategy to improve the gas barrier property of isobutylene–isoprene rubber/clay nanocomposites

2008 ◽  
Vol 27 (3) ◽  
pp. 270-276 ◽  
Author(s):  
Yurong Liang ◽  
Weiliang Cao ◽  
Zhao Li ◽  
Yiqing Wang ◽  
Youping Wu ◽  
...  
Keyword(s):  
Barrier Property ◽  
Clay Nanocomposites ◽  
Gas Barrier ◽  
New Strategy ◽  
Isoprene Rubber

Improving the Gas Barrier Property of SBR/Clay Nanocomposite through In Situ Sulfur Modification during Curing Process

2011 ◽  
Vol 108 ◽  
pp. 48-51 ◽  
Author(s):  
Shao Jian He ◽  
Yi Qing Wang ◽  
Jun Lin ◽  
Li Qun Zhang
Keyword(s):  
Gas Permeability ◽  
Barrier Properties ◽  
Barrier Property ◽  
Clay Nanocomposites ◽  
Gas Barrier ◽  
Alternative Materials ◽  
Excess Sulfur ◽  
Sulfur Modification ◽  
Cyclic Sulfide

Rubber/clay nanocomposites have been explored as alternative materials to replace expensive halogenated butyl rubber. In order to further improve their gas barrier properties, a simple and efficient method through sulfur modification was applied in this work. Excess sulfur was added into SBR/clay nanocompound to prepare sulfur modified nanocomposite via the formation of cyclic sulfide in addition to crosslinking. The vulcanization behavior, mechanical properties, dynamic mechanical property and gas barrier property of the nanocomposites were investigated. It was found that the sulfur modified SBR/clay nanocomposites showed much increased glass transition temperature and lower gas permeability.

Natural nanoclays: applications and future trends – a Chilean perspective

Clay Minerals ◽  
2009 ◽  
Vol 44 (2) ◽  
pp. 161-176 ◽  
Author(s):  
M. Calabi Floody ◽  
B. K. G. Theng ◽  
P. Reyes ◽  
M. L. Mora
Keyword(s):  
Agricultural Land ◽  
Clay Fraction ◽  
Barrier Properties ◽  
Clay Nanocomposites ◽  
Volcanic Soils ◽  
Gas Barrier ◽  
Important Species ◽  
The Past ◽  
Organically Modified ◽  
Water And Wastewater

AbstractBecause of their large potential for agricultural, industrial and medicinal applications, nanomaterials have been the focus of much research during the past few decades. Nanoclays are natural nanomaterials that occur in the clay fraction of soil, among which montmorillonite and allophane are the most important species. Montmorillonite is a crystalline hydrous phyllosilicate (layer silicate). Organically-modified montmorillonites or ‘organoclays’, formed by intercalation of quaternary ammonium cations, have long been used as rheological modifiers and additives in paints, inks, greases and cosmetics and as carriers and delivery systems for the controlled release of drugs. Perhaps the largest single usage of organoclays over recent years has been in the manufacture of polymer-clay nanocomposites. These organic–inorganic hybrid materials show superior mechanical, thermal and gas-barrier properties. Organoclays are also useful in pollution control and water treatment. Allophane is a non-crystalline aluminosilicate derived from the weathering of volcanic ash. A large proportion of the agricultural land in Chile is covered by volcanic soils,the clay fraction of which is dominated by allophane. Consisting of nanosize (3.5–5.0 nm) hollow spherules, allophane is a suitable support material for enzyme immobilization. Allophane is also effective at adsorbing phenolic compounds and colour from kraft mill effluents and phosphate from water and wastewater.

Gas barrier of polystyrene montmorillonite clay nanocomposites: Effect of mineral layer aggregation

2007 ◽  
Vol 45 (13) ◽  
pp. 1733-1753 ◽  
Author(s):  
S. Nazarenko ◽  
P. Meneghetti ◽  
P. Julmon ◽  
B. G. Olson ◽  
S. Qutubuddin
Keyword(s):  
Montmorillonite Clay ◽  
Clay Nanocomposites ◽  
Mineral Layer ◽  
Gas Barrier

A New Strategy to Exfoliate Silicone Rubber/Clay Nanocomposites

2005 ◽  
Vol 26 (10) ◽  
pp. 830-833 ◽  
Author(s):  
Jun Ma ◽  
Zhong-Zhen Yu ◽  
Hsu-Chiang Kuan ◽  
Arovind Dasari ◽  
Yiu-Wing Mai
Keyword(s):  
Silicone Rubber ◽  
Clay Nanocomposites ◽  
New Strategy

Characterizing the nanoclay induced constrained amorphous region in model segmented polyurethane–urea/clay nanocomposites and its implications on gas barrier properties

2016 ◽  
Vol 18 (3) ◽  
pp. 1487-1499 ◽  
Author(s):  
Sangram K. Rath ◽  
Kathi Sudarshan ◽  
Rupesh S. Bhavsar ◽  
Ulhas K. Kharul ◽  
Pradeep K. Pujari ◽  
...  
Keyword(s):  
Barrier Properties ◽  
Amorphous Region ◽  
Clay Nanocomposites ◽  
Segmented Polyurethane ◽  
Gas Barrier ◽  
Gas Barrier Properties

AFM images of the segmented PU/clay nanocomposite with labeling of various phases.

Effects of Surface Roughness on Gas Barrier Property of Thin Film Passivation with Mg-Zn-F

2013 ◽  
Vol 586 (1) ◽  
pp. 123-128 ◽  
Author(s):  
Sung-Youp Lee ◽  
Byong-Wook Shin ◽  
Hyeong-Rag Lee
Keyword(s):  
Thin Film ◽  
Surface Roughness ◽  
Barrier Property ◽  
Gas Barrier
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