Latex and two-roll mill processing of thermally-exfoliated graphite oxide/natural rubber nanocomposites

2013 ◽  
Vol 74 ◽  
pp. 166-172 ◽  
Author(s):  
Jeffrey R. Potts ◽  
Om Shankar ◽  
Shanthi Murali ◽  
Ling Du ◽  
Rodney S. Ruoff
Keyword(s):  
Natural Rubber ◽  
Graphite Oxide ◽  
Exfoliated Graphite ◽  
Roll Mill ◽  
Thermally Exfoliated Graphite ◽  
Rubber Nanocomposites

scholarly journals Influence of external heating rate on the structure and porosity of thermally exfoliated graphite oxide

Carbon ◽  
2017 ◽  
Vol 111 ◽  
pp. 651-657 ◽  
Author(s):  
Yang Qiu ◽  
Samuel Moore ◽  
Robert Hurt ◽  
Indrek Külaots
Keyword(s):  
Heating Rate ◽  
Graphite Oxide ◽  
Exfoliated Graphite ◽  
External Heating ◽  
Thermally Exfoliated Graphite

Mechanical and Thermal Properties of Kaolin/Natural Rubber Nanocomposites Prepared by the Conventional Two-Roll Mill Method

2012 ◽  
Vol 164 ◽  
pp. 142-145 ◽  
Author(s):  
Qian Zhang ◽  
Yu De Zhang ◽  
Yan Wang
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Filler Loading ◽  
Rubber Matrix ◽  
Mechanical And Thermal Properties ◽  
Morphological Studies ◽  
Transmission Electron ◽  
Roll Mill ◽  
Thermal Analyser ◽  
Rubber Nanocomposites

Nanoomposites consisting of natural rubber (NR) reinforced with the modified kaolin were fabricated. The effect of modified kaolin loading on the mechanical properties of the vulcanizates was examined by varying its incorporation (20–50 phr). The NR-based nanocomposites were characterized using the transmission electron microscopy (TEM), Instron tensile machine and thermal analyser. These filled NR composites exhibit outstanding mechanical properties and much higher thermal stability compared to the pure NR. The hardness and tensile properties increased with increasing filler loading and an optimum of tensile strength was achieved at 50 phr of modified kaolin. The morphological studies by TEM revealed that kaolinite layers were finely dispersed into the natural rubber matrix and orientationally arranged in parallel

Neutron scattering study of nickel decorated thermally exfoliated graphite oxide

2019 ◽  
Vol 44 (59) ◽  
pp. 30999-31007 ◽  
Author(s):  
Chiara Cavallari ◽  
Stephane Rols ◽  
Henry E. Fischer ◽  
Michela Brunelli ◽  
Mattia Gaboardi ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Graphite Oxide ◽  
Exfoliated Graphite ◽  
Thermally Exfoliated Graphite ◽  
Scattering Study ◽  
Neutron Scattering Study

Characterization of natural rubber nanocomposites filled with organoclay as a substitute for silica obtained by the conventional two-roll mill method

2011 ◽  
Vol 52 (1-2) ◽  
pp. 56-61 ◽  
Author(s):  
Larissa N. Carli ◽  
Cássio R. Roncato ◽  
Aline Zanchet ◽  
Raquel S. Mauler ◽  
Marcelo Giovanela ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Roll Mill ◽  
Rubber Nanocomposites

Comparative study on the natural rubber nanocomposites reinforced with carbon black nanoparticles and graphite oxide nanosheets

2015 ◽  
Vol 38 (7) ◽  
pp. 1427-1437 ◽  
Author(s):  
Jun Bian ◽  
Hai Lan Lin ◽  
Fei Xiong He ◽  
Ling Wang ◽  
Xiao Wei Wei ◽  
...  
Keyword(s):  
Carbon Black ◽  
Comparative Study ◽  
Natural Rubber ◽  
Graphite Oxide ◽  
Carbon Black Nanoparticles ◽  
Rubber Nanocomposites

The effect of acid treatment on thermally exfoliated graphite oxide as electrode for supercapacitors

2014 ◽  
Vol 138 ◽  
pp. 311-317 ◽  
Author(s):  
Haiyan Zhang ◽  
Jian Ye ◽  
Yipeng Ye ◽  
Yiming Chen ◽  
Chunhua He ◽  
...  
Keyword(s):  
Graphite Oxide ◽  
Acid Treatment ◽  
Exfoliated Graphite ◽  
Thermally Exfoliated Graphite

scholarly journals Thermal Behavior ofTacca leontopetaloidesStarch-Based Biopolymer

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Nurul Shuhada Mohd Makhtar ◽  
Miradatul Najwa Muhd Rodhi ◽  
Mohibah Musa ◽  
Ku Halim Ku Hamid
Keyword(s):  
High Temperature ◽  
Natural Rubber ◽  
Thermal Behavior ◽  
Thermal Performance ◽  
Palm Oil ◽  
Palm Olein ◽  
Low Cost ◽  
Thermal Testing ◽  
Crude Palm Oil ◽  
Roll Mill

Starch is used whenever there is a need for natural elastic properties combined with low cost of production. However, the hydrophilic properties in structural starch will decrease the thermal performance of formulated starch polymer. Therefore, the effect of glycerol, palm olein, and crude palm oil (CPO), as plasticizers, on the thermal behavior ofTacca leontopetaloidesstarch incorporated with natural rubber in biopolymer production was investigated in this paper. Four different formulations were performed and represented by TPE1, TPE2, TPE3, and TPE4. The compositions were produced by using two-roll mill compounding. The sheets obtained were cut into small sizes prior to thermal testing. The addition of glycerol shows higher enthalpy of diffusion in which made the material easily can be degraded, leaving to an amount of 6.6% of residue. Blending of CPO with starch (TPE3) had a higher thermal resistance towards high temperature up to 310°C and the thermal behavior of TPE2 only gave a moderate performance compared with other TPEs.

Effect of carbon nanotubes decorated with silver nanoparticles as hybrid filler on properties of natural rubber nanocomposites

2018 ◽  
Vol 136 (13) ◽  
pp. 47281 ◽  
Author(s):  
Apinya Krainoi ◽  
Claudia Kummerlöwe ◽  
Norbert Vennemann ◽  
Yeampon Nakaramontri ◽  
Skulrat Pichaiyut ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silver Nanoparticles ◽  
Natural Rubber ◽  
Hybrid Filler ◽  
Rubber Nanocomposites

EFFECT OF DEVULCANIZATION ON CROSSLINK DENSITY AND CROSSLINK DISTRIBUTION OF CARBON BLACK FILLED NATURAL RUBBER VULCANIZATES

2016 ◽  
Vol 89 (4) ◽  
pp. 653-670 ◽  
Author(s):  
Anu Mary Joseph ◽  
Benny George ◽  
Madhusoodanan K. N. ◽  
Rosamma Alex
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Crosslink Density ◽  
Morphological Properties ◽  
Original Sample ◽  
Ambient Conditions ◽  
Absolute Value ◽  
Roll Mill ◽  
Percentage Retention ◽  
The Absolute

ABSTRACTCarbon black filled natural rubber (NR) vulcanizates were devulcanized at ambient temperature in a two roll mill. The effect of cure system, that is, conventional vulcanization (CV), semiefficient vulcanization (semi EV), and efficient vulcanization (EV) systems, used for vulcanization of the original sample, on the efficiency of devulcanization was studied. The efficiency of devulcanization expressed as percentage devulcanization of the samples calculated from residual crosslink density measurements was correlated with the sol fraction of the devulcanized samples based on Horikx analysis. Using chemical probe analysis, we determined (i) the crosslink distribution pattern of the original sample, (ii) the extent to which the different types of crosslinks—that is, polysulfidic, disulfidic, and monosulfidic crosslinks—have been debonded or broken during the shearing process in the two roll mill, and (iii) the pattern of bond formation during revulcanization. Mechanical shearing predominantly breaks the majority crosslink type (polysulfidic crosslinks in CV and semi EV cure systems and disulfidic crosslinks in EV samples). Irrespective of the significant reduction in total crosslink density in all three sets of samples, chain shortening reactions similar to the post-crosslinking chemical reactions at curing temperatures also occur during mechanical shear at ambient conditions, which increased the absolute value of monosulfidic links in CV and semi EV systems. However, in the devulcanized EV system, the absolute value of polysulfidic crosslinks increased, which might be due to the re-crosslinking of the cleaved bonds. All the devulcanized samples were revulcanized, and the mechanical and morphological properties were analyzed. The percentage retention of the vulcanizate properties after revulcanization of the devulcanized samples correlated very well with efficiency of devulcanization.

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