Compatibilizing role of carbon nanotubes in poly(vinyl alcohol)/starch blend

Jose, Jobin; De, S. K.; AlMaadeed, Mariam Al-Ali; Dakua, Jolly Bhadra; Sreekumar, P.A.; Sougrat, Rachid; Al‐Harthi, Mamdouh A.

doi:10.1002/star.201400074

Cited by 47 publications

(21 citation statements)

References 32 publications

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“…Water-soluble polymers such as PEG and PVA and their blends have found many applications such as packaging [1], cosmetics [2], and emulsifiers and adhesives [3], among others. PVA and its composites have been extensively studied by our group [1,[4][5][6][7][8][9][10][11][12][13][14][15]. With some modifications of the existing polymers, products with low cost and light weight may be developed for a wide range of applications with desirable properties such as mechanical, thermal, and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Miscible PVA/PEG Blends and Effect of Graphene Concentration on Thermal, Crystallization, Morphological, and Mechanical Properties of PVA/PEG (10 wt%) Blend

Falqi

Bin‐Dahman

Hussain

et al. 2018

International Journal of Polymer Science

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101

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Water-soluble polymers such as poly(vinyl alcohol) (PVA) and poly(ethylene glycol) (PEG) and their nanocomposites with graphene were prepared by using a solution mixing and casting technique. The effect of different PEG loadings was investigated to determine the optimum blend ratio. The films were characterized using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analyzer (TGA) methods. Also, the mechanical properties including tensile strength and elongation at break were measured using a universal tensile testing machine. FTIR results confirmed the formation of the H-bond between PEG and PVA. DSC studies revealed that PEG has a significant plasticization effect on PVA as seen by the drop in the glass transition temperature (T g ). The blend with 10 wt% PEG loading was found to be the optimum blend because of good compatibility as shown by FTIR and SEM results and improved thermal properties. PVA/ PEG (10%) nanocomposites were prepared using graphene as a nanofiller. It was found that the elongation at break increased by 62% from 147% for the PVA/PEG (10%) blend to 209% for the nanocomposite with graphene loading of 0.2 wt%. The experimental values of tensile strength were compared using the predictive model of Nicolais and Narkis.

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Section: Introductionmentioning

confidence: 99%

Preparation of Miscible PVA/PEG Blends and Effect of Graphene Concentration on Thermal, Crystallization, Morphological, and Mechanical Properties of PVA/PEG (10 wt%) Blend

Falqi

Bin‐Dahman

Hussain

et al. 2018

International Journal of Polymer Science

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101

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“…Blends of starch with synthetic polymers upgrade the mechanical properties and give biodegradable property to plastics . Blends of starch with natural and synthetic biodegradable polymers such as chitosan , poly(lactic acid) (PLA) , polycaprolactone (PCL) , and poly(vinyl alcohol) (PVA) were reported. These blends are biodegradable, and are used in applications such as energy storage devices, packaging, agriculture, water treatment, and medicine.…”

Section: Introductionmentioning

confidence: 99%

Compatibility of poly(acrylic acid)/starch blends

2015

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Compatibility of poly(acrylic acid) (PAA) and corn starch blends was studied by various techniques. Blends were prepared by using solution mixing and casting method with the aid of glycerol as a plasticizer. The molecular level interactions between the blend components were analyzed with Fourier transform infrared spectroscopy (FTIR). Dynamic mechanical analysis (DMA) showed that the introduction of starch into PAA matrix contributed substantially to the increase of the storage modulus. Differential scanning calorimetry (DSC) studies revealed that the PAA/starch blends were partially miscible and had an amorphous structure. The thermal gravimetric analysis (TGA) confirmed that the blends had higher thermal stability than the individual polymers. Water uptake experiments showed that the degree of swelling was mainly dependent on the PAA content in the blend. X-ray diffraction (XRD) studies showed that the incorporation of the PAA into starch destructed its crystalline structure. The morphology of the blends was changed by varying the composition. Scanning electron microscopic (SEM) analysis showed that at higher loads of starch, the PAA was formed as layers around starch granules. Blends containing higher amount of starch showed more homogenous and compatible behaviors relative to those with lower starch contents.

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“…For these solutions, surfactants were applied, which then underwent ultrasonic processing. Figure 2(b) shows an evenly dispersed CNT solution [28]. Table 2 shows the specific characterizations of MWCNTs and SWCNTs.…”

Section: Experimental Programmentioning

confidence: 99%

Heating Experiment of CNT Cementitious Composites with Single-Walled and Multiwalled Carbon Nanotubes

Lee¹,

Kang²,

Song³

et al. 2017

Journal of Nanomaterials

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Carbon nanotubes (CNTs) are a primary nanomaterial that have outstanding physical and mechanical characteristics, and CNTs can be combined with cement-based materials to alter their heating characteristics. In this study, the types of CNTs used were multiwalled carbon nanotubes (MWCNTs) and single-walled carbon nanotubes (SWCNTs). Experiments were performed to determine the altered heating characteristics of the CNT cement mortars. The parameters of the experiment were CNT type, CNT content, curing age, and applied voltage. The results for the different CNT cement mortars indicate that mixing SWCNTs with water to produce CNT cement mortars was more effective for modifying the heating characteristics compared to mixing MWCNTs with water. In addition, field emission scanning electron microscope (FE-SEM) images supported the results found in the heating experiments.

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Compatibilizing role of carbon nanotubes in poly(vinyl alcohol)/starch blend

Cited by 47 publications

References 32 publications

Preparation of Miscible PVA/PEG Blends and Effect of Graphene Concentration on Thermal, Crystallization, Morphological, and Mechanical Properties of PVA/PEG (10 wt%) Blend

Preparation of Miscible PVA/PEG Blends and Effect of Graphene Concentration on Thermal, Crystallization, Morphological, and Mechanical Properties of PVA/PEG (10 wt%) Blend

Compatibility of poly(acrylic acid)/starch blends

Heating Experiment of CNT Cementitious Composites with Single-Walled and Multiwalled Carbon Nanotubes

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