Origins of B-type crystallinity in glycerol-plasticised, compression-moulded potato starches

Hulleman, S.H.D.; Kalisvaart, M.G; Janssen, Frank H.P.; Feil, H.; Vliegenthart, Johannes F.G.

doi:10.1016/s0144-8617(99)00024-7

Cited by 120 publications

(74 citation statements)

References 17 publications

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“…The diffractograms were obtained on X-ray diffractometer, Shimadzu model XRD-6000 with angles 2θ between 5 and 80°. Their crystallinity index was estimated by the height ratio of the diffraction peak (B-type at 2θ = 17° and V H -type at 2θ = 20°), as reported in literature [21][22][23] . Scanning Electron Microscope JEOL 6390LV was used to analyze the surface.…”

Section: Characterizationmentioning

confidence: 99%

Effect of the Glycerol and Lignin Extracted from Piassava Fiber in Cassava and Corn Starch Films

et al. 2015

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Section: Characterizationmentioning

confidence: 99%

Effect of the Glycerol and Lignin Extracted from Piassava Fiber in Cassava and Corn Starch Films

et al. 2015

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“…Low-power plasmas can induce the polymerization of a precursor gas on the substrate surface and introduce functional groups under specific plasma conditions (Hulleman, Kalisvaart, Janssen, Feil, & Vliegenthart, 1999;Jenkins & Donald, 1998;Santos, Bastos, Silva, Thiré, & Simão, 2012;Vaydia, Bhattacharya, & Zhang, 1995). Two successful methods that have been reported in the literature for inducing surface hydrophobization are the use of chemical vapor deposition -CVD plasma -either with sulfur hexafluoride (SF 6 ) or with hexamethyldisiloxane (HMDSO) as precursor gases (Andrade, Simão, Thiré, & Achete, 2005;Bastos, Santos, Silva, & Simão, 2009;Cruz-Barba, Manolache, & Denes, 2002;Hegemann, Brunner, & Oehr, 2001;Hulleman et al, 1999;Jenkins & Donald, 1998;Santos et al, 2012;Selli, Mazzone, et al, 2001;Selli, Riccardi, Massafra, & Marcandalli, 2001;Simão, da Silva, Martins, Thiré, & Andrade, 2007;Vaydia et al, 1995;Zanini, Massini, Mietta, Grimoldi, & Riccardi, 2008). SF 6 plasma is used to introduce fluoride on treated surfaces resulting in contact angles greater than 130 • due to fluoride incorporation together with surface reticulation (Bastos et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Inducing surface hydrophobization on cornstarch film by SF6 and HMDSO plasma treatment

Bastos

Santos

Fonseca

et al. 2013

Carbohydrate Polymers

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The development of thermoplastic materials based on starch has become a promising alternative for reducing plastic waste. To this end, plasma treatments were used to enhance the hydrophobicity of cornstarch films. Cornstarch films plasticized using glycerol and distilled water were prepared by casting. A surface modification method was employed using different precursor gases, HMDSO and SF(6), and a combined treatment using HMDSO followed by SF(6) (HMDSO/SF(6)) and then the reverse, using SF(6) first followed by HMDSO (SF(6)/HMDSO). The results indicated that the induced surface morphology determines the contact angle. It was observed that all films became hydrophobic, and films that were initially treated with SF(6) showed the greatest hydrophobicity if no further coating was applied, or if the treated surface was further coated using HMDSO. Under both of these treatment conditions the contact angle was greater than 110°.

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“…Peaks from the B-type and V h -type crystalline structures are indicated in the figures. The degree of crystallinity was estimated according to Hulleman et al (1999) at about 6% for all samples. The degree of crystallinity of native starch is about 22% (Gernat et al, 1990).…”

Section: Resultsmentioning

confidence: 99%

Influence of water addition on mechanical properties of thermoplastic starch foils

Chocyk

Gładyszewska

Ciupak

et al. 2015

International Agrophysics

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A b s t r a c t. The aim of this paper is to study the influence of water on the mechanical properties of thermoplastic starch films. Experimental observations of Young modulus and the breaking force of thermoplastic starch foils with different percentages of polyvinyl alcohol and keratin additives and screw rotation speeds are reported. Thermoplastic starch foils are prepared by the extrusion method with the bowling from potato starch and glycerol as a plasticizer. Young modulus and the breaking force were determined by the random marker method. Measurements of Young modulus and the breaking force of the films were performed after their production and after dosing with water. It was observed that in all cases Young modulus decreases after dosing with water, but the breaking force lied in the same range. Thermoplastic starch foils produced at the screw rotation speed equal to 60 r.p.m. have the best mechanical properties. The highest value of Young modulus and the breaking force were obtained for samples with a 1% keratin additive.

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Origins of B-type crystallinity in glycerol-plasticised, compression-moulded potato starches

Cited by 120 publications

References 17 publications

Effect of the Glycerol and Lignin Extracted from Piassava Fiber in Cassava and Corn Starch Films

Effect of the Glycerol and Lignin Extracted from Piassava Fiber in Cassava and Corn Starch Films

Inducing surface hydrophobization on cornstarch film by SF6 and HMDSO plasma treatment

Influence of water addition on mechanical properties of thermoplastic starch foils

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