Tensile and thermal properties of nanocellulose-reinforced poly(vinyl alcohol) nanocomposites

Cho, Mijung; Park, Byung‐Dae

doi:10.1016/j.jiec.2010.10.006

Cited by 181 publications

(75 citation statements)

References 14 publications

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“…A second event is verified around 300 o C, it is observed as a peak between 200 o C and 400 o C in DTG plots and it is associated with pyrolysis of cellulose, lignin and hemicellulose and corresponds to 90% of weight loss. The third event is due to degradation of residual lignin taking place around 700 o C. From TG and DTG plots is verified that the acid hydrolysis did not change the thermal stability of cotton linter [29][30][31][32][33] . TG plots of PCL presented decomposition in one stage starting around 260 o C, this decomposition is visualized in DTG plots as a peak with maximum height at 405 o C. The residual content at the end of thermal analysis was 2%.…”

Section: Thermogravimetry (Tg) Measurementsmentioning

confidence: 84%

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Processing and Properties of PCL/Cotton Linter Compounds

et al. 2017

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Biodegradable compounds of poly(ε-caprolactone) (PCL)/ cotton linter were melting mixed with filling content ranging from 1% to 5% w/w. Cotton linter is an important byproduct of textile industry; in this work it was used in raw state and after acid hydrolysis. According to the results of torque rheometry no decaying of viscosity took place during compounding, evidencing absence of breaking down in molecular weight. The thermal stability increased by 20% as observed in HDT for PCL/cotton nanolinter compounds. Adding cotton linter to PCL didn't change its crystalline character as showed by XRD; however an increase in degree of crystallinity was observed by means of DSC. From mechanical tests in tension was observed an increase in ductility of PCL, and from mechanical tests in flexion an increase in elastic modulus upon addition of cotton linter, whereas impact strength presented lower values for PCL/cotton linter and PCL/cotton nanolinter compounds. SEM images showed that PCL presents plastic fracture and cotton linter has an interlacing fibril structure with high L/D ratio, which are in agreement with matrix/fibril morphology observed for PCL/cotton linter compounds. PCL/cotton linter compounds made in this work cost less than neat PCL matrix and presented improved properties making feasible its commercial use.

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Section: Thermogravimetry (Tg) Measurementsmentioning

confidence: 84%

“…Yielding (%) 29,4 Regarding particle size evaluation, 92.2% of it is between 100-1000 nm and these were cotton nanolinter particles used in this work. According to yielding results for each kilo of cotton linter subjected to acid hydrolysis, 294 grams of cotton nanolinter are produced.…”

Section: Particle Size and Zeta Potential Measurementsmentioning

confidence: 99%

Processing and Properties of PCL/Cotton Linter Compounds

et al. 2017

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“…One of the common types of natural fibers is cellulose, an abundant natural resource. Cellulose contains nanosize fibrils that can be classified into a crystalline part (nanocellulose) and an amorphous part (Cho and Park 2011;Ching and Ng 2014). The cellulose chains are linked by hydrogen bonds between the hydroxyl groups that yield high stiffness and structural strength to the material.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Polyvinyl Alcohol-Based Composite Reinforced with Nanocellulose and Nanosilica

et al. 2015

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This work reported the thermomechanical and morphological properties of polyvinyl alcohol (PVA) nanocomposites reinforced with nanosilica and oil palm empty fruit bunches derived nanocellulose. The nanocomposites were characterized by mechanical, thermal, XRD, optical, and morphological studies. Uniformity dispersion of the nanofillers at a 3 wt% concentration has been shown by scanning electron microscopy, whereas the changes in crystallinity were demonstrated by X-ray diffraction analysis. Addition of nanosilica resulted in increased thermal stability of PVA/nanocellulose composites due to the reduction in mobility of the matrix molecules. Visible light transmission showed that the addition of 0.5 wt% nanosilica only slightly reduced the light transmission of PVA/nanocellulose composites with 3 wt% nanocellulose. The addition of a small concentration of nanosilica successfully improved the tensile and modulus properties of PVA/nanocellulose composite films. The increases in tensile strength and thermal stability were evidence of a nanosilica contribution in PVA/nanocellulose composites, inducing reinforcement, as detected by the thermomechanical properties.

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“…However, pure PVA shows some drawbacks, such as low elastic modulus, poor abrasion resistance and severe creep problem, which lead to early failure of pure PVA and restrict its use in industry [2,[8][9][10]. In order to overcome the aforementioned drawbacks, researchers have developed PVA nanocomposites with improved properties by using various inorganic nanofillers, such as clay [11], carbon nanotube [12], graphene [13,14], nano-TiO 2 [15].…”

Section: Introductionmentioning

confidence: 99%