Exfoliation, reduction, hybridization and polymerization mechanisms in one-step microwave-assist synthesis of nanocomposite nylon-6/graphene

González‐Morones, Pablo; Hernández‐Hernández, Ernesto; Fernández, Salvador; Ledezma-Rodríguez, Raquel; Sáenz‐Galindo, Aidé; Cadenas‐Pliego, Gregorio; Ávila‐Orta, Carlos A.; Ziolo, Ronald F.

doi:10.1016/j.polymer.2018.05.014

Cited by 18 publications

(20 citation statements)

References 60 publications

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“…It can be seen that there exists two diffraction peaks at 2θ = 20.2° and 23.9° for all the TPV samples, which respectively represent the diffractions of (200) and (002)/(202) planes. It is widely acknowledged that there are two crystal forms of pure PA6, namely α-form and γ-form, corresponding to the diffraction of (200), (002)/(202) planes and (100) plane, respectively [35]. Therefore, the two characteristic diffraction peaks at 2θ = 20.2° and 23.9° for PA6 matrix should be attributed to the diffractions peak of α-form, indicating that there is not the crystal modification transfer of α-form to γ-form.…”

Section: Resultsmentioning

confidence: 99%

Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Yang

Guo

2019

Polymers

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As a special class of “green” elastomers, thermoplastic vulcanizates (TPVs) have been widely used in industries due to the combination of the excellent resilience of conventional elastomers and the easy recyclability of thermoplastics. Here, the morphology evolution of TPVs based on polyamide 6/ethylene-propylene-diene rubber (PA6/EPDM) blends was investigated by varying the content of the curing agent, phenolic resin (PF). With the incorporation of 6 wt% PF, the gel content of the EPDM phase reaches a high value of 49.6 wt% and a typical sea-island structure is formed with EPDM domain in a micro-nano size. The dynamic rheology behaviors of TPVs showed that with the curing degree of EPDM phase increasing, a denser network of EPDM particles is formed in PA6 matrix. Additionally, a lower crystal degree and crystal peak temperature are observed, indicating that there exists a growth restriction of PA6 crystal plate induced by a thinner plastic layer between the adjacent EPDM particles. However, the crystal form of PA6 is not changed with the increasing curing degree of the EPDM phase. This study provides an effective strategy to realize a new kind of TPVs, which can be easily introduced into industrial applications.

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Section: Resultsmentioning

confidence: 99%

Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Yang

Guo

2019

Polymers

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“…In all cases, the first step is to ensure a favorable interaction between the matrix and the particle which in some cases leads to surface modification using chemical or physical methods that promote the insertion of new functional groups on the surface of the particle. In some works where nano-clays are used, the cation exchange that makes the surface organophilic is reported, in the case of carbon particles, plasma, microwave and ultrasound-assisted treatments are performed [34,35,36]. It is necessary to achieve an intercalated structure once the surface modification of the particles is carried out, in this way the polymer chains penetrate and as soon as local stresses are exerted by shearing they would end up exfoliating the nanocomposite structure.…”

Section: Methods Of Obtaining Polymeric Nanocompositesmentioning

confidence: 99%

Nanocomposite and biodegradable polymers applied to technical textiles

Caicedo

Melo-López

Cabello-Alvarado

et al. 2019

DYNA

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Based on the results of research papers reflected in the scientific literature, the main examples, methods and perspectives for the development of technical textiles are considered. The focus of this work is to concentrate the results obtained for different textile applications (technical textiles) through the use of biodegradable polymers modified and improved with nanoparticles. The techniques for obtaining polymeric nanocomposites, finishing processes, type and structure of textiles are specified. In general, key aspects are identified for a better understanding of the technical challenges and physicochemical effects of the fibers.

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“…Most of the reported research followed facile “immersion and drying” technique. Based on fiber chemistry many modification approach has got attentions for better interaction and bonding between fiber and GO, such as use of adhesives,133a,115 coupling agents, plasma treatment, chemical activation, grafting via esterification,110b,116,119 microwave‐assist polymerization (MAP), thiol–ene click chemistry, doping of GO with different metal ions for chemical crosslinking, etc. Moreover, antimicrobial nanoparticles like silver, ammonium salts and TiO 2 has also been used with graphene 115b,122.…”

Section: Fabrication Techniques Of Graphene Modified Textile Compositesmentioning

confidence: 99%

“…However, graphene/nylon composites were found to effectively improve the dimensional stability and thermal conductivity of nylon. Different approaches have been applied to fabricate nylon/graphene composites including melt compounding, electrostatic self‐assembly with BSA,133a microwave‐assist polymerization (MAP), functionalization of graphene oxide (GO) via esterification and solution mixing, electrochemical method, and in situ polymerization …”

Section: Graphene Modified Textile Composites In Relevant To the Propmentioning

confidence: 99%

See 1 more Smart Citation

Graphene Modified Multifunctional Personal Protective Clothing

Bhattacharjee

Joshi

Chughtai

et al. 2019

Adv Materials Inter

181

134

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Personal protective clothing is intended to protect the wearer from various hazards (mechanical, biological, chemical, thermal, radiological, etc.) and inhospitable environmental conditions that may cause harm or even death. There are various types of personal protective clothing, manufactured with different materials based on hazards and end user requirements. Conventional protective clothing has impediments such as high weight, bulky nature, lack of mobility, heat stress, low heat dissipation, high physical stress, diminishing dexterity, diminishing scope of vision, lack of breathability, and reduced protection against pathogens and hazards. By virtue of the superlative properties of graphene, fabrics modified with this material can be an effective means to overcome these limitations and to improve properties such as mechanical strength, antibacterial activity, flame resistance, conductivity, and UV resistance. The limitations of conventional personal protective equipment are discussed, followed by necessary measures which might be taken to improve personal protective equipment (PPE), the unique properties of graphene, methods of graphene incorporation in fabrics, and the current research status and potential of graphene‐modified performance textiles relevant to PPE.

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Exfoliation, reduction, hybridization and polymerization mechanisms in one-step microwave-assist synthesis of nanocomposite nylon-6/graphene

Cited by 18 publications

References 60 publications

Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Nanocomposite and biodegradable polymers applied to technical textiles

Graphene Modified Multifunctional Personal Protective Clothing

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