Surface nanostructure of Hevea brasiliensis natural rubber latex particles

Nawamawat, Kanjanee; Sakdapipanich, Jitladda; Ho, C. C.; Ma, Yujie; Song, Jing; Vancso, G. Julius

doi:10.1016/j.colsurfa.2011.09.021

Cited by 201 publications

(125 citation statements)

References 26 publications

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“…The formation of homogeneously dispersed MWCNTs in NR-latex is believed to be due to hydrophilic/hydrophobic interactions [46]. The surface of NR-latex particles are covered by both positive charges of protein molecules and negative charges of phospholipid molecules [47,48]; therefore, the hydrophilic heads are forced to interact with the NR-latex and the hydrophobic tails of the surfactants adsorb onto the MWCNTs' surface. In this case, ultrasonication provides a high local shear force that opens spaces on the ends of the carbon nanotube bundles [16] (see Fig.…”

Section: ×10mentioning

confidence: 99%

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

et al. 2014

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The performance of single-, double-and triple-chain anionic sulphosuccinate surfactants for dispersing multiwall carbon nanotubes (MWNCTs) in natural rubber latex (NR-latex) was studied using a range of techniques, including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Raman spectroscopy. The conductivities of the nanocomposites were also investigated using four-point probe measurements. Here, MWCNTs were efficiently dispersed in NR-latex with the aid of hyperbranched tri-chain sulphosuccinate anionic surfactants, specifically sodium 1,4-bis(neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulphonate (TC14). This paper highlights that TC14 performs much better than that of the commercially available surfactant sodium dodecyl sulphate (SDS), demonstrating how careful consideration of surfactant architecture leads to improved dispersibility of MWCNTs in NR-latex. The results should be of significant interest for improving nanowiring applications suitable for aerospace-based technology.

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Section: ×10mentioning

confidence: 99%

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

et al. 2014

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“…An interesting work is the study of the surface morphology of NR latex [37] . The authors used both the techniques of Confocal Fluorescence Microscopy and AFM for elucidating the nanostructured surface layer of NR latex particles, which are composed by a core-shell structure of the NR latex particle made up of a hydrophobic core of NR molecules surrounded by a mixed layer of proteins and phospholipids with 20 nm thick.…”

Section: De Sousa F D B; Scuracchio C H -The Use Of Atomic Formentioning

confidence: 99%

The use of atomic force microscopy as an important technique to analyze the dispersion of nanometric fillers and morphology in nanocomposites and polymer blends based on elastomers

Sousa

Scuracchio

2014

Polímeros

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AFM has been recognized as one of the most powerful tools for the analysis of surface morphologies because it creates three-dimensional images at angstrom and nano scale. This technique has been exhaustively used in the analyses of dispersion of nanometric components in nanocomposites and in polymer blends, because of the easiness of sample preparation and lower equipment maintenance costs compared to electron microscopy. In this review, contributions using AFM are described, with emphasis on the dispersion of nanofillers in polymeric matrices. It is aimed to show the importance of technical analysis for nanocomposites and polymer blends based on elastomers.

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“…It is generally agreed that NR is composed primarily of a cis-1,4 polyisoprene surrounded with a biocomplex of protein-phospholipid layer (Fig.7a) [177][178][179]. Recently, work by Nawamawat et al [178] revealed that NR particles are present with core-shell like structures, and polyisoprene units present as a hydrophobic core encapsulated by a mixed of 84% protein (positively charged) and 16% phospholipid (negatively charged) domains located on the surface to render them hydrophilic (Fig.7b). Protein resides as a major constituent of the latex particle surfaces and thus is considered to be an important component for the stable colloidal dispersion of NR.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Graphene-philic surfactants for nanocomposites in latex technology

Mohamed

Ardyani

Bakar

et al. 2016

Advances in Colloid and Interface Science

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Graphene is the newest member of the carbon family, and has revolutionized materials science especially in the field of polymer nanocomposites. However, agglomeration and uniform dispersion remains an Achilles" heel (even an elephant in the room), hampering the optimization of this material for practical applications. Chemical functionalization of graphene can overcome these hurdles but is often rather disruptive to the extended piconjugation, altering the desired physical and electronic properties. Employing surfactants as stabilizing agents in latex technology circumvents the need for chemical modification allowing for the formation of nanocomposites with retained graphene properties. This article reviews the recent progress in the use of surfactants and polymers to prepare graphene/polymer nanocomposites via latex technology. Of special interest here are surfactant structure-performance relationships, as well as background on the roles surfactantgraphene interactions for promoting stabilization.

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Surface nanostructure of Hevea brasiliensis natural rubber latex particles

Cited by 201 publications

References 26 publications

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

The use of atomic force microscopy as an important technique to analyze the dispersion of nanometric fillers and morphology in nanocomposites and polymer blends based on elastomers

Graphene-philic surfactants for nanocomposites in latex technology

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