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http://dx.doi.org/10.9713/kcer.2017.55.3.401

Preparation of Self-repairing Polymer-modified Waterproofing Asphalt-montmorillonite Composite: 1. Silylation Characteristics of Montmorillonite (K-10) Using 3-aminopropyltriethoxysilane and its Optimal Condition According to a Criterion by XRD Analysis  

Lee, Eun Ju (Department of Chemical Engineering, Daegu University)
Lee, Jong Hoon (Department of Chemical Engineering, Daegu University)
Park, You Jin (Department of Chemical Engineering, Daegu University)
Yoon, Yong Keun (Petro Industry Co., Ltd)
Lim, Kwang-Hee (Department of Chemical Engineering, Daegu University)
Publication Information
Korean Chemical Engineering Research / v.55, no.3, 2017 , pp. 401-408 More about this Journal
Abstract
In preparation of self-repairing polymer-modified waterproofing asphalt-montmorillonite (MMT) composite, silylation-modification characteristics of cation ($Na^+$) exchanged K-10 (Na-MMT-K) using 3-aminopropyltriethoxysilane (APS) were studied and the optimal conditions of its silylation-modification process were proposed by use of the results of XRD analysis on silylation-modified Na-MMT-K (S-Na-MMT-K) under various conditions. According to XRD results, it was confirmed that peaks of Na-MMT-K were simultaneously consistent with those of K-10 and natural or Ca-MMT modified Na-MMT. Similarly, S-Na-MMT-K was observed to have two basal spacings ($d_{001}$), among which the area-ratio of a secondary (001) peak ($2{\theta}=3.9{\sim}4.2^{\circ}$) to a primary (001) peak ($2{\theta}{\sim}8.838^{\circ}$) was suggested to be a criterion to represent a degree of APS silylation-modification. Then, the optimal conditions on APS-stirring period prior to APS-MMT reaction, APS-MMT reaction period, APS concentration and reaction temperature at the highest area-ratio were turned out to be 20 min, 2~3 hr, 7.5 w/v% and $50^{\circ}C$, respectively.
Keywords
Montmorillonite; Silylation-modification; Optimal condition; Criterion;
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Times Cited By KSCI : 1  (Citation Analysis)
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