Influence of fillers on free volume and gas barrier properties in styrene-butadiene rubber studied by positrons

Polymer ◽  
2005 ◽  
Vol 46 (3) ◽  
pp. 719-724 ◽  
Author(s):  
Z.F. Wang ◽  
B. Wang ◽  
N. Qi ◽  
H.F. Zhang ◽  
L.Q. Zhang
Keyword(s):  
Free Volume ◽  
Barrier Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Gas Barrier ◽  
Styrene Butadiene ◽  
Gas Barrier Properties

scholarly journals Effect of the Topology of Carbon-Based Nanofillers on the Filler Networks and Gas Barrier Properties of Rubber Composites

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5416
Author(s):  
Shipeng Wen ◽  
Rui Zhang ◽  
Zongchao Xu ◽  
Long Zheng ◽  
Li Liu
Keyword(s):  
Barrier Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Gas Barrier ◽  
Factors Affecting ◽  
Fibrous Carbon ◽  
Styrene Butadiene ◽  
Gas Barrier Properties ◽  
Carbon Based

The topology of nanofillers is one of the key factors affecting the gas barrier properties of rubber composites. In this research, three types of carbon-based nanofillers, including spherical carbon black (CB), fibrous carbon nanotubes (CNTs), and layered graphene (GE) were chosen to investigate the effect of the topological structures of nanofillers on the gas barrier properties of styrene-butadiene rubber (SBR) composites. Results showed that the structure and strength of the filler networks in SBR composites were closely associated with the topology of nanofillers. When filled with 35 phr CB, 8 phr CNTs, and 4 phr GE, the SBR composites had the same strength of the filler network, while the improvement in gas barrier properties were 39.2%, 12.7%, and 41.2%, respectively, compared with pure SBR composites. Among the three nanofillers, GE exhibited the most excellent enhancement with the smallest filler content, demonstrating the superiority of two-dimensional GE in improving the barrier properties of rubber composites.

Gas barrier properties and mechanism of kaolin/styrene–butadiene rubber nanocomposites

2015 ◽  
Vol 111 ◽  
pp. 37-43 ◽  
Author(s):  
Yinmin Zhang ◽  
Qinfu Liu ◽  
Shilong Zhang ◽  
Yude Zhang ◽  
Hongfei Cheng
Keyword(s):  
Barrier Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Gas Barrier ◽  
Rubber Nanocomposites ◽  
Styrene Butadiene ◽  
Gas Barrier Properties

Synthesis and Characterization of Styrene-Butadiene Rubber-Clay Nanocomposites with Enhanced Mechanical and Gas Barrier Properties

2008 ◽  
Vol 81 (5) ◽  
pp. 821-841 ◽  
Author(s):  
P. Meneghetti ◽  
S. Shaikh ◽  
S. Qutubuddin ◽  
S. Nazarenko
Keyword(s):  
Ammonium Chloride ◽  
Volume Fraction ◽  
Barrier Properties ◽  
Superior Performance ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Mechanical Mixing ◽  
Mechanical Reinforcement ◽  
Gas Barrier ◽  
Styrene Butadiene

Abstract Five styrene-butadiene rubber (SBR)/clay nanocomposite or hybrid systems were synthesized via mechanical mixing of SBR using a Brabender mixer and a 2-roll mill in the presence of unmodified sodium montmorillonite (Na-MMT) clay, MMT modified with octadecylamine (C18amine), MMT modified with a zwitterionic surfactant, octadecyldimethyl betaine (C18DMB), and MMT modified with a polymerizable cationic surfactant, vinylbenzyl octadecyldimethyl ammonium chloride (VODAC) or vinylbenzyl dodecyldimethyl ammonium chloride (VDAC). The surfactant chain length and functional groups affected the dispersion of clay nanolayers in the matrix and the overall properties of the nanocomposites. X-ray diffraction (XRD) revealed peaks corresponding to intercalated structures; transmission electron microscopy (TEM) observations agreed well with XRD assessment of the composites. SBR/VODAC-MMT system exhibited the best dispersion among the nanocomposites studied. VODAC-MMT was partially exfoliated in SBR matrix and the average aspect ratio of the nanolayer stacks or aggregates was high (20). Depending on the amount of clay, considerable mechanical reinforcement and gas barrier enhancement were achieved in nanocomposites over pure rubber. Tensile strength in excess of 18MPa was observed in SBR nanocomposites with 30 phr C18 organoclays. The storage modulus at 25C increased by a factor of four by incorporating 10 phr VODAC-MMT in SBR. The most pronounced oxygen barrier enhancement was again observed in SBR/VODAC-MMT nanocomposite with the reduction of permeability by 60% at silicate volume fraction of 0.06. The superior performance of nanocomposites containing VODAC-MMT is attributed to the presence of the vinyl-benzyl group and 18 carbon-atom tail in the surfactant leading to high compatibility with SBR and nano-scale dispersion in the SBR matrix.

The impact of microwave-assisted thermal sterilization on the morphology, free volume, and gas barrier properties of multilayer polymeric films

2014 ◽  
Vol 131 (12) ◽  
pp. n/a-n/a ◽  
Author(s):  
Sumeet Dhawan ◽  
Christopher Varney ◽  
Gustavo V. Barbosa-Cánovas ◽  
Juming Tang ◽  
Farida Selim ◽  
...  
Keyword(s):  
Free Volume ◽  
Barrier Properties ◽  
Polymeric Films ◽  
Gas Barrier ◽  
Microwave Assisted ◽  
Thermal Sterilization ◽  
The Impact ◽  
Gas Barrier Properties

scholarly journals Preparation and Properties of SBR Composites Containing Graphene Nanoplatelets Modified with Pyridinium Derivative

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5407
Author(s):  
Magdalena Gaca ◽  
Cyril Vaulot ◽  
Magdalena Maciejewska ◽  
Magdalena Lipińska
Keyword(s):  
Ionic Liquid ◽  
Textural Properties ◽  
Barrier Properties ◽  
Sem Analysis ◽  
Graphene Nanoplatelets ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Scanning Calorimetry ◽  
Styrene Butadiene ◽  
The Impact

The goal of this work was to study the effect of graphene nanoplatelets (GnPs) modified with ionic liquid (IL) on properties of styrene–butadiene rubber (SBR) composites. GnPs were decorated with IL or were modified in bulk directly during rubber mix preparation. The ionic liquid used was 1-butyl-4-methylpyridinium tetrafluoroborate (BMPFB). The textural properties were studied to confirm surface modification of GnPs with BMPFB. In these investigations, the impact of the concentration of GnPs and the effect of the method of GnPs’ modification with IL on elastomers properties are described. Some thermal measurements (e.g., differential scanning calorimetry and thermogravimetry) were conducted to characterize the thermal stability or the vulcanization process of the investigated samples. Complementary experimental techniques were used to investigate the properties of the obtained elastomers, specifically tensile testing, and electrical and barrier property measurements. The deposition of IL on the GnPs’ surface positively influenced the mechanical and barrier properties of elastomers. However, samples containing graphene nanoplatelets modified from solution were characterized by less electrical conductivity. SEM analysis was additionally performed to investigate GnPs’ dispersion within SBR composites.

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