Effect of “<i>Z</i>” factor for strength of interphase layers on the tensile strength of polymer nanocomposites

Peng, Wanxi; Rhim, Sungsoo; Zare, Yasser; Rhee, Kyong Yop

doi:10.1002/pc.24813

Cited by 66 publications

(29 citation statements)

References 32 publications

(32 reference statements)

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“…6 However, gelatin-based hydrogels are characterized by low mechanical properties and by a fast biodegradation rate. 7 PVA is a synthetic polymer produced by polymerization of vinyl acetate to polyvinyl acetate, and a successive partial or full hydrolysis of acetate groups. 8 PVA hydrogels have a high degree of swelling as well as good compressive and elastic properties.…”

Section: Introductionmentioning

confidence: 99%

Development of gelatin/chitosan/PVA hydrogels: Thermal stability, water state, viscoelasticity, and cytotoxicity assays

Rodríguez‐Rodríguez

García-Carvajal

Jiménez‐Palomar³

et al. 2018

J of Applied Polymer Sci

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Gelatin/chitosan/poly(vinyl alcohol) (PVA) hydrogels were fabricated with different polymer ratio using the freeze-drying process. The thermal stability, water state, rheological, and cytotoxic properties of the hydrogels were evaluated. Thermogravimetric/differential scanning calorimetry analyses showed a decomposition onset temperature below 242.7 AE 2.7 C. The samples did not show statistical differences (p < 0.05) on the onset temperature values. Nonfreezing water reached a constant value around of 1 g water/g polymer. Freezing water increased linearly with the increase of the water content independently of the polymer ratio. The hydrogels showed an equilibrium water content from 9 to 13 times their mass. The hydrogels exhibited a solid-viscoelastic behavior. The elastic modulus was higher with the increase of chitosan concentration (G 0 = 22 170 AE 85 Pa) independently of the temperature (5-55 C). In vitro assay showed that hydrogels are nontoxic in the HT29-MTX-E12 cell line. These results indicate that the gelatin/chitosan/PVA hydrogels could be considered for biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Development of gelatin/chitosan/PVA hydrogels: Thermal stability, water state, viscoelasticity, and cytotoxicity assays

Rodríguez‐Rodríguez

García-Carvajal

Jiménez‐Palomar³

et al. 2018

J of Applied Polymer Sci

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“…The ability to uptake water is a main feature of scaffolds for biomedical applications due to its effect on the capacity for the exchange of nutrients and waste products. [42] The results of water absorption testing for different scaffolds are shown in Figure 5. It can be seen that the percentage of the water absorption of all of the samples increased dramatically during the first hour of the test and reached a steady (maximum swelling) value after 2 h. In general, the hybrid constructs showed a lower water uptake ability the pure DT.…”

Section: Swelling Ratementioning

confidence: 99%

Graphene functionalized decellularized scaffold promotes skin cell proliferation

et al. 2019

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An increasing number of new strategies for skin tissue engineering have been developed with the potential to mimic the biological properties of native tissue with a high degree of complexity, flexibility, and reproducibility. In this study, decellularized tissue (DT) was prepared from the bovine heart by using chemical treatments. However, the mechanical properties of the DT constructs were poorer than the extra cellular matrix of the skin tissue. To overcome this challenge, hybrid scaffolds of DT and graphene oxide (GO) were developed and the effects of the GO concentration on the morphology, pore size, porosity, mechanical strength, and water uptake capacity of the samples were evaluated. Moreover, the biocompatibility of hybrid scaffolds was studied by Live/Dead staining. The results show that a hybrid scaffold incorporating 3 % graphene oxide improved the mechanical strength and cell viability by ~25 % in comparison to the DT scaffolds. Cell viability results confirmed that the porous scaffolds could support cell adhesion, proliferation, and cell activity for 7 days. This study provides new insight into and opportunities for using graphene‐based materials to develop biomimetic constructs for clinical applications.

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“…Additionally, most available models on the mechanics cannot suppose the interphase effects [18,32,33]. Therefore, several new and developed models were suggested to study the interphase character in the mechanical behavior [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Connecting Effectiveness of the Interphase Zone on the Tensile Properties of Carbon Nanotubes (CNT) Reinforced Nanocomposite

Zare

Rhee

2020

Polymers

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The establishment of interphase region around nanoparticles accelerates the percolating of carbon nanotubes (CNT) in polymer nanocomposites reinforced with CNT (PCNT), due to the linking productivity of interphase district before the physical connecting of nanoparticles. Therefore, the interphase is an important character in the networks of CNT in PCNT. Here, a simulation study is presented to investigate the interphase connection in the mechanical possessions of PCNT including tensile modulus and strength. A number of models comprising Takayanagi, Ouali, Pukanszky and Callister are developed by the assumption of an interphase district in the CNT excluded volume. The advanced models depict the optimistic influences of reedy and lengthy CNT besides dense interphase on the stiffness and tensile power of nanocomposites. The Pukanszky calculations depict that the interphase strength plays a more noteworthy role in the nanocomposites strength compared to the CNT length.

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Effect of “Z” factor for strength of interphase layers on the tensile strength of polymer nanocomposites

Cited by 66 publications

References 32 publications

Development of gelatin/chitosan/PVA hydrogels: Thermal stability, water state, viscoelasticity, and cytotoxicity assays

Development of gelatin/chitosan/PVA hydrogels: Thermal stability, water state, viscoelasticity, and cytotoxicity assays

Graphene functionalized decellularized scaffold promotes skin cell proliferation

Analysis of the Connecting Effectiveness of the Interphase Zone on the Tensile Properties of Carbon Nanotubes (CNT) Reinforced Nanocomposite

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