Properties of a plasticised starch blend. Part 1: Influence of moisture content on fracture properties

Chaleat, Celine; Halley, P. J.; Truss, R. W.

doi:10.1016/j.carbpol.2007.06.029

Cited by 38 publications

(15 citation statements)

References 29 publications

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“…These values are lower than the 10% reported in the literature for montmorillonite/TPS nanocomposites which clearly indicates that the addition of 40% PCL improves substantially the water resistance of starch blends. 29,30 Other study also reported lower water absorption by blending starch with PCL. 31 The origin of this phenomenon can be the formation of a PCL skin on the film surface attributed to the difference in melt viscosities between TPS and PCL.…”

Section: Moisture Uptakementioning

confidence: 96%

“…This important increase is attributed to an improved mobility of starch molecules due to plasticization from higher MC. 29 Also, it can be observed that the breaking behavior changes from a brittle to a more ductile rupture. Around the fourth day of storage, stress whitening occurred around the failure zone revealing some plastic deformation and the value of strain at break increased substantially from this point onwards.…”

Section: Effect Of MC and Processing Conditionsmentioning

confidence: 97%

“…Chaléat et al 29 The lower Young modulus is attributed to water molecules acting as plasticizers. It is easy to see that modulus stabilization after 7 days is directly related to the equilibrium MC also obtained after a week (see Fig.…”

Section: Effect Of MC and Processing Conditionsmentioning

confidence: 99%

“…4). 29 MC has been reported to influence directly the glass transition temperature (T g ) and several mechanical properties of the blends. 28,32 In all cases, the Young moduli stabilized between 50 and 70 MPa after 7 days, the value being function of the processing conditions.…”

Section: Effect Of MC and Processing Conditionsmentioning

confidence: 99%

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Film processability and properties of polycaprolactone/thermoplastic starch blends

Ramírez‐Arreola

Robledo‐Ortíz

Moscoso

et al. 2011

J of Applied Polymer Sci

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In this work, the processing and properties of blown films prepared from thermoplastic corn starch (TPS) and polycaprolactone (PCL) were studied, in particular at high TPS content. The influence of processing parameters and material moisture content on the tensile properties was also studied. The results show that final film properties are mainly controlled by the draw ratio, blow-up ratio and PCL concentration in the blends.The results also show that PCL/TPS films are less hydrophilic as PCL content increases. Finally, it was found that a very narrow processing window exists for this blend.

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Section: Moisture Uptakementioning

confidence: 96%

Section: Effect Of MC and Processing Conditionsmentioning

confidence: 97%

Section: Effect Of MC and Processing Conditionsmentioning

confidence: 99%

Section: Effect Of MC and Processing Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Film processability and properties of polycaprolactone/thermoplastic starch blends

Ramírez‐Arreola

Robledo‐Ortíz

Moscoso

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Compared to pure TPS, TPS-PVOH shows an improvement in melt strength [16]. Besides, to further improve the features of materials, plasticizers such as sorbitol, glycerol, and maltitol can be added to starch formulations [17,18]. In comparison to traditional composites, nanocomposites that resulted from adding a low amount of clay to polymers led to improvement in the properties such as barrier, thermal, and oxidative.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation behaviors and water adsorption of poly(vinyl alcohol)/starch/carboxymethyl cellulose/clay nanocomposites

Taghizadeh

Sabouri²

2013

Int Nano Lett

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The focus of this work is to study the effect of sodium montmorillonite (MMT-Na) clay content on the rate and extent of enzymatic hydrolysis polyvinyl alcohol (PVA)/starch (S)/carboxymethyl cellulose (CMC) blends using enzyme cellulase. The rate of glucose production from each nanocomposite substrates was most rapid for the substrate without MMT-Na and decreased with the addition of MMT-Na for PVA/S/CMC blend (51.5 μg/ml h), PVA/ S/CMC/1% MMT (45.4 μg/ml h), PVA/S/CMC/3% MMT (42.8 μg/ml h), and PVA/S/CMC/5% MMT (39.2 μg/ml h). The results of this study have revealed that films with MMT-Na content at 5 wt.% exhibited a significantly reduced rate and extent of hydrolysis. Enzymatic degradation behavior of MMT-Na containing nanocomposites of PVA/S/CMC was based on the determinations of weight loss and the reducing sugars. The degraded residues have been characterized by various analytical techniques, such as Fourier transform infrared spectroscopy, scanning electronic microscopy, and UV-vis spectroscopy.

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Water sorption and physicomechanical properties of corn starch‐based films

Kuorwel

Cran

Sonneveld

et al. 2012

J of Applied Polymer Sci

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The mechanical performance of thermoplastic starch (TPS) films and films made of TPS blended with an aliphatic polyester (APTPS) was investigated after exposure to water mixtures of various compositions and different levels of relative humidity (RH). Conditioning of TPS films at various RH levels resulted in a noticeable absorption of moisture, particularly at high RH levels, and their mechanical properties decreased significantly. High magnification imaging of the films revealed the presence of significant microcracking on the surface of the TPS films which could potentially result in the increased water absorption and consequent reduction in mechanical integrity. The APTPS film was free of any visible microscopic defects and was also less susceptible to water ingress.

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Properties of a plasticised starch blend. Part 1: Influence of moisture content on fracture properties

Cited by 38 publications

References 29 publications

Film processability and properties of polycaprolactone/thermoplastic starch blends

Film processability and properties of polycaprolactone/thermoplastic starch blends

Biodegradation behaviors and water adsorption of poly(vinyl alcohol)/starch/carboxymethyl cellulose/clay nanocomposites

Water sorption and physicomechanical properties of corn starch‐based films

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