Study on Yield Stress and Thixotropy of Hydroxypropyl Distarch Phosphate Paste

Autor: Yuanli ZHAN, Kai WANG, Xiao CAO, Shuyan ZHANG, Siqian CHEN, Jie ZHU
Jazyk: čínština
Rok vydání: 2024
Předmět:
Zdroj: Shipin gongye ke-ji, Vol 45, Iss 6, Pp 100-109 (2024)
Druh dokumentu: article
ISSN: 1002-0306
DOI: 10.13386/j.issn1002-0306.2023060222
Popis: In order to study the yield stress and thixotropic behavior of the hydroxypropyl distarch phosphate (HPDSP) paste, HPDSP respectively derived from corn starch (CS) and waxy corn starch (WS) with different ratios of amylopectin were investigated. The critical mass fractions, yield stress, and thixotropic behavior of HPDSP pastes under various temperatures were studied. The results showed that, the critical mass fractions for the transition of the HPDSP solution at 5 ℃ from dilute to semi-dilute, and from semi-dilute to concentrated were 3wt% and 6wt%, respectively. The yield stress of 5wt% corn starch-hydroxypropyl distarch phosphate (CS-HPDSP) and waxy corn starch-hydroxypropyl distarch phosphate (WS-HPDSP) paste both showed weak correlations with temperature. However, at 6wt% concentration, the yield stress significantly decreased (P
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