Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars

Thomas Poinot; Kawtar Benyahia; Alexandre Govin; Thomas Jeanmaire; Philippe Grosseau

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Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars

机译：超声降解研究砂浆用聚合物外加剂对分子量的影响

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The aim of this paper is to provide a methodology to study the influence of the molecular weight of poly-saccharidic admixtures on mortar properties. A wide range of admixtures with different molecular weight and constant structure was prepared. This has been made possible by the use of ultrasonic treatment, a simple, effective, and without additive method. It appears that cellulose and guar gum derivatives, used as water retention agents, exhibit a significant molecular weight reduction according to the ultrasonic treatment duration. The water retention capacity of the mortars mixed with ultrasonically degraded admixture solutions increases with molecular weight for a same admixture. However, comparing water retention values obtained with similar molecular weight of a same family shows that effectiveness of polysaccharides as water retention agent is not linearly linked to their molecular weight.

机译：本文的目的是提供一种方法来研究多糖混合物的分子量对砂浆性能的影响。制备了具有不同分子量和恒定结构的多种混合物。通过使用简单，有效且无附加方法的超声波处理，这已成为可能。看来，用作保水剂的纤维素和瓜尔豆胶衍生物根据超声处理持续时间显示出明显的分子量降低。对于相同的混合物，与超声降解的混合物溶液混合的砂浆的保水能力随分子量的增加而增加。然而，比较以相同家族的相似分子量获得的保水值表明，多糖作为保水剂的有效性并不与其分子量线性相关。

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来源
《Construction and Building Materials》 |2013年第10期|1046-1052|共7页
作者
Thomas Poinot; Kawtar Benyahia; Alexandre Govin; Thomas Jeanmaire; Philippe Grosseau;
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作者单位

Ecole Nationale Superieure des Mines, SPIN-EMSE, CNRS:UMR5307, LGF, 158 Cours Fauriel, 42023 Saint-Etienne, France;

Ecole Nationale Superieure des Mines, SPIN-EMSE, CNRS:UMR5307, LGF, 158 Cours Fauriel, 42023 Saint-Etienne, France;

Ecole Nationale Superieure des Mines, SPIN-EMSE, CNRS:UMR5307, LGF, 158 Cours Fauriel, 42023 Saint-Etienne, France;

Universite de Lyon, F-69003 France Departement de Chimie, Universite Jean Monnet Saint-Etienne, Saint-Etienne, Lyon, France;

Ecole Nationale Superieure des Mines, SPIN-EMSE, CNRS:UMR5307, LGF, 158 Cours Fauriel, 42023 Saint-Etienne, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Polysaccharide; Hydroxypropylguars; Water retention; Molecular weight; Ultrasonic degradation;

机译：多糖;羟丙基瓜尔胶;保水分子量;超声波降解;

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3. Influence of structural parameters on the degradation of ultrahigh-molecular-weight vinyl-type network-polymer precursors during elution through size exclusion chromatography columns [J] . Ikeda JI., Oe H., Aota H., Journal of Applied Polymer Science . 2003,第2期

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4. Molecular weights and molecular-weight distributions of cellulose and cellulose nitrates during ultrasonic and mechanical degradation [C] . Marianne Marx-Figini National meeting of the American Chemical Society . 1998

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7. Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars [O] . Thomas Poinot, Kawtar Benyahia, Alexandre Govin, 2013

机译：超声劣化研究聚合物混合物对砂浆的分子量影响

Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars

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