Starch plasticized wheat

Interactions between Cellulose and Plasticized Wheat Starch - Properties of Biodegradable Multiphase Systems... 

Interactions between Cellulose and Plasticized Wheat Starch... 

The aim of this paper is to present the different properties of polysaccharide composites obtained by the introduction of cellulose fibres, varying in length and content, into plasticized wheat starch. We have used LDPE-based composites as reference, because without compatibilizer, the LDPE-fibres interactions are usually considered as very poor. To highlight the interactions developed between cellulose and starch, we have compared both kinds of composites. Finally, we have evaluated the post-processing ageing of TPS compared to some other systems. 

L. Averous, O. Martin and L. Moro, Plasticized Wheat Starch-based Biodegradable Blends and Composites, 6th 1SBP and 9th BEPS, Honolulu-Hawaii (USA), 12-16 December 2000. 

Figure 9.14. Evolutions, with differing nanoclay content, of a) the Young s modulus (MPa) b) the strain at break (%) and c) the energy at break (MJ.m ) c). Note WS means plasticized [wheat] starch [CHI 08]...

MAR 01b] Martin O., Schwach E., Averous L., et al, Properties of biodegradable multilayer films based on plasticized wheat starch , Starch/Staerke, vol. 53, no. 8, pp. 372-... 

MAR 03] Martin O., Averous L., Della Valle G., In-line determination of plasticized wheat starch viscoelastic behavior impact of processing , Carbohydrate Polymers., vol. 53, no. 2, pp. 169-182,2003. 

Natural polymers such as starch and protein are potential alternatives to petroleum-based polymers for a number of applications. Unfortunately, their high solubility in water limit their use for water sensitive applications. To solve this problem thermoplastic starches have been laminated using water-resistant, biodegradable polymers. For example, polylactic acid and P(3HB-co-3HV) were utilised as the outer layers of the stratified polyester/PWS (plasticized wheat starch)/polyester film strucmre in order to improve the mechanical properties and water resistance of PWS which made it useful for food packaging and disposable articles [65]. Moreover, improved physic-chemical interactions between P(3HB-CO-3HV) and wheat straw fibres were achieved with high temperature treatment. It resulted in increased P(3HB-co-3HV) crystallization, increased Young s moduli and lowered values of stress and strain to break than the neat matrix of P(3HB-co-3HV). There was no difference in the biodegradation rate of the polymer [66]. 

Bread is made from water plasticized wheat flour, which in turn consists of ground-up wheat seeds. Dry flour consists of approximately 12% of protein, 87% of starch, and approximately 1% of everything else, such as minerals and salts. Since both the protein and the starch are polymeric, bread dough and... 

Martin, O., Schwach, E., Av6rous, L., and Couturier, Y., 2001, Properties of Biodegradable Multilayer Films Based on Plasticized Wheat Starch. Starch/Starke 53 372-380. 

Martin, 0., Averous, L., Della Valle, G. (2003]. Inline determination of plasticized wheat starch viscous behaviour Impact of processing, Carbonhydr. Polym., 53,169-182. 

A leuco dye(s) solution in a nonvolatile solvent is encapsulated in microcapsules 5-10 pm in diameter, and after addition of latex and wheat starch, coated (at about 5 g/m2 as dry solid) on a substrate such as paper, synthetic paper, or plastic film, and dried to give the CB sheet. 

The industrial use of rye starch is limited. Industrial production of rye starch was carried out during World War II, but as soon as the supply of wheat, maize and potato starches returned to normal production ceased.2 Rye flour is a difficult raw material from which to isolate starch, because of its high pentosan content and the poor gluten-forming ability of the proteins. It has, therefore, been suggested that the whole rye kernel, and not the isolated starch, should be used in industrial applications (e.g. production of insulating and plastic material).3 Rye is also a problematic raw material because of the variation in the climatic conditions in northeastern Europe,... 

Polylactic acid (PLA) is a biodegradable polymer derived from lactic acid. It is a highly versatile material and is made from 100% renewable resources like corn, sugar beet, wheat and other starch-rich products. Polylactic acid exhibits many properties that are equivalent to or better than many petroleum-based plastics, which makes it suitable for a variety of applications. 

Material Fine/medium powder Fly ash, pulverized coal, plastic powders, alumina, granular sugar, pharma excipients Course powder Sand, salt, granules, mineral powders, glass beads Cohesive fine powder Cement, corn starch, tit anium dioxide, carbon-black powder, many pharma actives Granular Plastic pellets, wheat, large glass beads, tablets, course sand, seeds... 

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