Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

Dileep, P.; Jacob, Sinto; Chandra, C.S. Julie; Dominic, C.D. Midhun; Poornima, M.; Rappai, John P.; Narayanankutty, Sunil K.

doi:10.1007/s12633-021-01281-3

Cited by 10 publications

(9 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lowering the tc 90 and ts 2 of the modified composites was arisen from the reduction in the hydroxyl groups of the silica surface by CAD and also might be the CAD had an accelerating effect. [ 21 ] Therefore, the CRI of the modified composites was higher than of that of the unmodified composite, and it showed a gradual increase with increasing the amount of CAD…”

Section: Resultsmentioning

confidence: 99%

Improvement of mechanical and antibacterial properties of silica‐filled styrene butadiene rubber composite by using cinnamaldehyde

Kandil

2022

Polymer Composites

View full text Add to dashboard Cite

In this study, cinnamaldehyde (CAD) was used as a filler modifier and antimicrobial material for silica‐filled styrene butadiene rubber (SBR) composite. CAD was used in different amounts to modify the silica surface. Fourier‐transform infrared spectroscopy (FTIR) was used to characterize the obtained CAD modified silicas. The modified silicas were mixed with SBR matrices using a laboratory two‐roll mill to produce modified silica‐filled SBR composites. The curing, mechanical, swelling and antibacterial properties of the resulting composites were studied and compared with those of the unmodified silica‐filled SBR composite. The surface morphologies of the obtained composites were also studied. The mechanical results showed that the use of 3 g of CAD resulted in a significant improvement in the mechanical properties of the resulting composite as its tensile strength, elongation at break and modulus at 100% increased by 144.9%, 105.1%, and 37.5%; respectively; compared to the unmodified composite. Furthermore, the antibacterial results showed that all the modified composites had a high activity against Gram+ and Gram− bacteria compared to the unmodified one, and this activity increased by increasing the amount of CAD. Accordingly, it is expected that these prepared composites can be used for medicinal purposes in the future.

show abstract

Section: Resultsmentioning

confidence: 99%

Improvement of mechanical and antibacterial properties of silica‐filled styrene butadiene rubber composite by using cinnamaldehyde

Kandil

2022

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…6 To overcome this drawback of silica, various chemicals and methods have been examined to reduce its hydrophilicity and thus enhanced its dispersion in rubber matrix. 2,7,8 One of the most famous of these methods is silane coupling agent, particularly bis (3-(triethoxysilyl) propyl)tetrasulfide (TESPT). This method is characterized by its effectiveness in producing rubber composites with superior mechanical properties than other used methods.…”

Section: Introductionmentioning

confidence: 99%

“…7,10 Other drawbacks of using silane are its high price and difficult processing behavior, which have limited its use and prompted research for alternatives. 8,9 As a result, finding alternative green modifiers for silane has become one of the major challenges facing the rubber industry in recent years. 5,[7][8][9] Several attempts have been made to provide an alternative to silane, such as Katueangngan et al 3 prepared a renewable interfacial modifier, namely hydroxyl terminated natural rubber (HTNR), for silicafilled natural rubber (NR) compounds.…”

Section: Introductionmentioning

confidence: 99%

“…8,9 As a result, finding alternative green modifiers for silane has become one of the major challenges facing the rubber industry in recent years. 5,[7][8][9] Several attempts have been made to provide an alternative to silane, such as Katueangngan et al 3 prepared a renewable interfacial modifier, namely hydroxyl terminated natural rubber (HTNR), for silicafilled natural rubber (NR) compounds. They found that using HTNR produced compound with better cure characteristic, tensile properties and lesser Payne effect than the non-treated compound.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the scorch time is delayed and the cross‐link density is reduced in the silica‐filled rubber composites 6 . To overcome this drawback of silica, various chemicals and methods have been examined to reduce its hydrophilicity and thus enhanced its dispersion in rubber matrix 2,7,8 . One of the most famous of these methods is silane coupling agent, particularly bis(3‐(triethoxysilyl)propyl)tetrasulfide (TESPT).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel thiourea based interfacial modifier for silica‐filled natural rubber composites

Kandil

Abo-Salem

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this paper, a novel interfacial modifier, namely 2‐hexylthiouronium bromide (HTB), for silica has been synthesized and applied into silica‐filled natural rubber (NR) composites. HTB was synthesized from the reaction of thiourea with hexyl bromide at 65°C. Fourier‐transform infrared (FTIR) and Proton nuclear magnetic resonance spectrometry (1HNMR) were used to characterize the chemical structure of HTB. Different loadings of HTB were used to prepare a series of silica‐filled NR composites with the aim of verifying the optimal loading of HTB. The cure characteristics, swelling, mechanical, aging and morphological properties of the resulting composites were studied and compared with the unmodified silica‐filled NR composite. The thermal stability of the composites were also studied by thermogravimetric analysis. By examining the properties of the composites, it was found that the addition of HTB had a significant effect on the properties of the silica‐filled NR composites, resulting in shorter scorch and cure times, as well as better swelling, mechanical, aging, and thermal properties than those of the unmodified composite. Furthermore, it was found that 2.5 phr loading of HTB was preferable to obtain a composite with superior tensile properties as its composite's tensile strength increased by 104% over the unmodified composite.

show abstract

Improved cure characteristics and mechanical properties of an epoxidized natural rubber filled with cerium oxide nanoparticles: Influence of epoxide levels and filler loading

Jantachum,

Phokha,

Hunpratub

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, cerium oxide nanoparticles (nanoceria, CeNP) were used as a nanofiller in epoxidized natural rubber with varying epoxide levels, including 25% epoxidation (ENR‐25) and 50% epoxidation (ENR‐50). Co‐precipitation methods were employed to synthesize a pure phase of CeNP with an average particle size of 11.4 ± 2.0 nm. CeNP was characterized using X‐ray diffraction (XRD), transmission electron microscopy (TEM), and X‐ray photoelectron spectroscopy. The effect of CeNP loading with 0–3 parts per hundreds of rubber (phr) on the properties of rubber nanocomposites was explored. ENR‐25 nanocomposites with 1 phr of CeNP exhibited higher tensile strength and elongation at break compared to ENR‐50 nanocomposites. These findings correspond to a lower Payne effect, improved scorch safety, and better processability. The strongest and most effective CeO2–ENR interactions via silane linkages are expected to outperform sulfur crosslinking in ENR‐25 having 1 phr of CeNP. Microstructural evaluation of an ENR‐25 sample containing 1 phr of CeNP indicated well‐distributed nanofillers in the ENR‐25 matrix, indicating that CeNP and ENR‐25 appeared to be well‐matched. Hardness of all ENR nanocomposites increased with CeNP loading. The cracking resistance, creep properties, and thermal stability of rubber nanocomposites were unaffected by addition of CeNP in the ENR‐25 and ENR‐50 samples.

show abstract

Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

Cited by 10 publications

References 50 publications

Improvement of mechanical and antibacterial properties of silica‐filled styrene butadiene rubber composite by using cinnamaldehyde

Improvement of mechanical and antibacterial properties of silica‐filled styrene butadiene rubber composite by using cinnamaldehyde

A novel thiourea based interfacial modifier for silica‐filled natural rubber composites

Improved cure characteristics and mechanical properties of an epoxidized natural rubber filled with cerium oxide nanoparticles: Influence of epoxide levels and filler loading

Contact Info

Product

Resources

About