What are reasons that makes cornstarch ineffectiveness for binding paper?
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Cornstarch can be ineffective for binding paper due to various factors. In the U.S. paper industry, cornstarch faces challenges competing with synthetic materials that often surpass it in molecular design, charge adjustment, viscosity characteristics, and binding power . Additionally, the effectiveness of starch in enhancing paper strength can be compromised by the formation of complexes with other starches, like cationic aldehyde starch and anionic aldehyde starch, which may lead to decreased adsorption on cellulose surfaces and reduced tensile strength of the paper . Moreover, the use of corn starch in the recovered paper sector for packaging papers in Germany and Austria is influenced by the efficiency of thermo-oxidative or enzymatic degradation plants, where continual enzymatic degradation is preferred for cost and quality reasons .
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| Papers (5) | Insight |
|---|---|
| Unmodified and ungelatinized starch granules in the starch-bound matrix prevent adhesion to rollers during gelation, making cornstarch effective for binding paper in the manufacturing process. | |
Open access•Journal Article 1 Citations | The inefficiency of corn starch for binding paper is due to the short contact period during thermo-oxidative degradation, negatively impacting the Concora Medium Test (CMT) strength. |
| Cornstarch is ineffective for binding paper due to its inability to provide alkali stability and resistance to wet-rub, which can be achieved by using alkali-curable cationic/anionic starch derivatives. | |
| Aldehyde starch complexes with acetal and hydrogen bonds block available groups for adsorption, reducing cornstarch effectiveness in binding paper fibers, leading to decreased tensile strength. | |
60 Citations | Commodity cornstarch lacks molecular design, charge adjustment, and viscosity characteristics needed in papermaking. Synthetic materials often outperform cornstarch in binding power and performance requirements. |
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