Toughening of brittle polyester with functionalized halloysite nanocomposites

Albdiry, Mushtaq; Yousif, B. F.

doi:10.1016/j.compositesb.2018.10.032

Cited by 55 publications

(38 citation statements)

References 32 publications

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“…Slight decreases in both strength and modulus are observed with increasing microcapsule content (Figure 9). This result is consistent with the hypothesis that fluid‐filled microcapsules act as stress concentrators within the bulk polymer, making the composite more susceptible to material fracture upon loading 61,62 . The presence of microcapsules can also lead to greater polymer chain mobility decreasing the modulus 63,64 …”

Section: Resultssupporting

confidence: 87%

Self‐healing in high impact polystyrene (HIPS) composites via embedded non‐toxic solvent‐filled microcapsules

Shinde

Shelke

Celestine

et al. 2021

J of Applied Polymer Sci

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Polymer composites are widely used in many industries due to their desirable, and commonly superior properties. However, the replacement of damaged composite materials can be very costly and time‐consuming, motivating the development of self‐healing composites that recover their properties after a damage event. This work demonstrates the microcapsule‐based self‐healing of compression molded thermoplastic high impact polystyrene (HIPS) composites using a non‐toxic and environmentally friendly solvent, ethyl phenylacetate (EPA). EPA is incorporated within double‐walled polyurethane‐poly(urea‐formaldehyde) (PU/UF) microcapsules which are then integrated within the HIPS specimens. Flexure and fracture behavior, with and without microcapsules, is used to investigate the microcapsules' impact on composite physical properties and to determine the composite's self‐healing efficiency (up to 64%) after healing in response to fracture. Overall, this work demonstrates the inclusion of self‐healing properties in a commercially important polymer material with a non‐toxic and environmentally friendly solvent and motivates further development of thermoplastic self‐healing composites for industrial applications.

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Section: Resultssupporting

confidence: 87%

Self‐healing in high impact polystyrene (HIPS) composites via embedded non‐toxic solvent‐filled microcapsules

Shinde

Shelke

Celestine

et al. 2021

J of Applied Polymer Sci

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“…This enhancement is attributed to the dispersion of the modified HNTs in the polymer matrix, which can reduce the stress concentration and provide more uniform stress distribution. 29 Further, the firm interfacial interaction between the HNTs and the polymer matrix make positive contribution to enhance the flexural strength and impact strength.…”

Section: Resultsmentioning

confidence: 99%

Preparation of benzoxazine-modified halloysite nanotubes and its application on epoxy/benzoxazine composites

Shen

Liu

et al. 2020

High Performance Polymers

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Benzoxazine monomer (named as B-aptes) was synthesized from 3-aminopropyltriethoxysilane (KH-550), bisphenol A (BPA), and paraformaldehyde. Subsequently, functionalized halloysite nanotubes were obtained by introducing B-aptes onto the surface of halloysite nanotubes (HNTs). Then, benzoxazine-modified halloysite nanotubes (B-HNTs) were used to combine with BPA epoxy resin to prepare the diglycidyl ether of bisphenol-A (DGEBA)/B-HNTs composites. The homogeneous dispersion state of modified HNTs in the cured composite matrix was observed by scanning electron microscopy. Differential scanning calorimetry was used to investigate polymerization behaviors of ternary composites. The results showed that the ternary composite possessed lower polymerization temperature compared with the neat DGEBA/benzoxazine. According to the results of thermogravimetric analysis, the thermal stability of DGEBA/benzoxazine copolymers was improved by the modified HNTs, the char yield increased with the increase of HNTs mass ratio. The results of mechanical tests and dynamic mechanical analysis displayed that the DGEBA/B-HNTs composites possessed promoted mechanical properties.

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“…These nanofillers include silica, cellulose, and clay materials nanoparticles (montmorillonite, hectorite, saponite, laponite, halloysite, etc.) [25][26][27]. ii) Active nanofillers, this type of nanofillers has stimulus-responsive properties, which in addition to reinforcement, provides the stimulus-response capacity to the nanocomposite material.…”

Section: Polymer Nanocompositesmentioning

confidence: 99%

Smart Polymer Nanocomposites: Recent Advances and Perspectives

Vera¹,

Mella²,

Urbano³

2020

J. Chil. Chem. Soc.

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Nanocomposite polymers have received considerable interest in research for the last three decades. Those nanocomposite polymers that are sensitive to a stimulus such as pH, temperature, magnetism, and electricity, among others, called smart or intelligent nanocomposite polymers had received even greater attention due to their potential technological applications. Applications of these polymers include flexible electronic devices, sensors, self-healing polymers, shape-memory materials, etc. The sensitivity of the material can come from both the polymer that acts as a matrix and the nanofiller, resulting in a material that combines properties of each of its components and that each one will not have separately. This mini-review aims to provide an update on the most recent and significant applications in the area of stimuli-responsive polymer nanocomposites, emphasizing the most innovative applications in biomedicine and catalysis developed in the last three years.

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Toughening of brittle polyester with functionalized halloysite nanocomposites

Cited by 55 publications

References 32 publications

Self‐healing in high impact polystyrene (HIPS) composites via embedded non‐toxic solvent‐filled microcapsules

Self‐healing in high impact polystyrene (HIPS) composites via embedded non‐toxic solvent‐filled microcapsules

Preparation of benzoxazine-modified halloysite nanotubes and its application on epoxy/benzoxazine composites

Smart Polymer Nanocomposites: Recent Advances and Perspectives

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