Preparation of high‐performance deproteinized natural rubber/chitosan composite films via a green and sulfur‐free method

Yuan, Changcheng; Sun, Jinyu; Tian, Xiaohui; Yuan, Y.F.

doi:10.1002/app.53253

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…By providing a detailed understanding of the elemental composition and distribution within the material, EDS analysis enables the development of improved sulfur concrete formulations, paving the way for more sustainable and durable construction materials [18][19]38 .…”

Section: Sem and Eds Analysismentioning

confidence: 99%

Application of Sulfur-2,4-dinitrophenylhydrazine as Modifier for Producing an Advantageous Concrete

Turaev,

Shavkatova,

Amanova

et al. 2023

Baghdad Sci.J

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In this investigative endeavor, a novel concrete variety incorporating sulfur-2,4-dinitrophenylhydrazine modification was developed, and its diverse attributes were explored. This innovative concrete was produced using sulfur-2,4-dinitrophenylhydrazine modification and an array of components. The newly created sulfur-2,4-dinitrophenylhydrazine modifier was synthesized. The surface texture resulting from this modifier was examined using SEM and EDS techniques. The component ratios within concrete, chemical and physical traits derived from the sulfur-2,4-dinitrophenylhydrazine modifier, chemical and corrosion resistance of concrete, concrete stability against water absorption, concrete resilience against freezing, physical and mechanical properties, durability, elastic modulus, and thermal expansion coefficient of the examined sulfur-infused concrete were assessed. The acquired results also substantiated that the thermal expansion coefficient value for sulfur-2,4-dinitrophenylhydrazine modified concrete was 14.8×10-6/0C. The average deformation of the analyzed concrete was 0.0026-0.0051, indicating a superior deformation performance compared to conventional concretes. Concrete with smaller aggregate sizes exhibited greater density, specifically 2283 kg/m3. The concrete density decreased gradually with an increase in aggregate size. The stability of sulfur-2,4-dinitrophenylhydrazine modified concrete was remarkably high in various aggressive environments. EDS analysis revealed that carbon atoms constituted 56.63% of the total mass, while sulfur made up 33.91% of the total mass. The obtained SEM outcomes demonstrated that the sulfur-2,4-dinitrophenylhydrazine modifier exhibited a more porous structure, devoid of crystalline formations. The sulfur-2,4-dinitrophenylhydrazine modification experienced a single-stage thermal mass loss, with the mass loss events being endothermic in nature. The IR findings verified the presence of amino functional groups (connected melamine ring) and the establishment of polymer sulfur chains.

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Section: Sem and Eds Analysismentioning

confidence: 99%

Application of Sulfur-2,4-dinitrophenylhydrazine as Modifier for Producing an Advantageous Concrete

Turaev,

Shavkatova,

Amanova

et al. 2023

Baghdad Sci.J

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“…Natural rubber (NR) is a biosynthesized polymer derived from the Brazilian rubber tree, which consists of approximately 94% cis-1,4-polyisoprene and 6% nonrubber components (NRCs). − Due to its superior comprehensive properties, NR is widely used in myriad aspects of daily life. However, most NR products need to be vulcanized to ensure good strength and elasticity, while the conventional vulcanization process usually requires energy-consuming processing steps and the addition of harmful curing agents. − Moreover, the permanent cross-linking network also puts an obstacle to its reprocessing, degradation, as well as the potential functionalization of vulcanized NR products. − In this context, developing a new generation of NR materials with better performance, degradability, and functional designability via more effective and eco-friendly strategies garnered widespread attention.…”

Section: Introductionmentioning

confidence: 99%

Fully Biosourced, Vulcanization-Free, and Thermal-Responsive Natural Rubber Material

Huang,

Zhang,

Kong

et al. 2024

Macromolecules

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Natural rubber (NR) material is indispensable in various fields of our daily life, while its preparation usually involves toxic cross-linking agents and energy-consuming vulcanization processes. The permanent cross-linking network of NR products also makes its degradation and recycling difficult. Herein, a fully biosourced, vulcanization-free NR material is developed by simply introducing carrageenan (KC) in the rubber matrix via a facile aqueous mixing method. The nonrubber components (NRCs) on the rubber latex particles are of crucial importance for this art as they can interact with KC by forming hydrogen bonding between the functional groups of proteins in NRCs and the abundant hydroxyl and sulfonate groups on KC molecules. As a result, KC is selectively dispersed between the latex particles and forms a segregated filler network. The special KC network and the good interfacial interaction between KC and rubber promote strain-induced crystallization and endow rubber composites with great mechanical properties. Moreover, the obtained NR/KC composites exhibit an interesting thermalresponsive attraction behavior, which has good potential in smart applications, such as artificial muscle. This work paves a simple and effective path to vulcanization-free NR by leveraging the inherent NRC on latex rubber particles, opening a new horizon for the sustainable development of NR/polysaccharide composite elastomers.

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A self-healing polypyrrole/oxidized natural rubber conductive composite as a building block for highly sensitive strain sensors

Yan,

Sun,

Yuan

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Preparation of high‐performance deproteinized natural rubber/chitosan composite films via a green and sulfur‐free method

Cited by 3 publications

References 47 publications

Application of Sulfur-2,4-dinitrophenylhydrazine as Modifier for Producing an Advantageous Concrete

Application of Sulfur-2,4-dinitrophenylhydrazine as Modifier for Producing an Advantageous Concrete

Fully Biosourced, Vulcanization-Free, and Thermal-Responsive Natural Rubber Material

A self-healing polypyrrole/oxidized natural rubber conductive composite as a building block for highly sensitive strain sensors

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