SILYLATION OF CELLULOSE WITH TRICHLOROSILANE AND TRIETHOXYSILANE IN HOMOGENEOUS LiCl/N,N-DIMETHYLACETAMIDE SOLUTION*

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SILYLATION OF CELLULOSE WITH TRICHLOROSILANE AND TRIETHOXYSILANE IN HOMOGENEOUS LiCl/N,N-DIMETHYLACETAMIDE SOLUTION*

Papers | Updated：2021-06-21

- SILYLATION OF CELLULOSE WITH TRICHLOROSILANE AND TRIETHOXYSILANE IN HOMOGENEOUS LiCl/N,N-DIMETHYLACETAMIDE SOLUTION*
- Vol. 18, Issue 2, Pages: 161-168(2000)
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- Published：20 April 2000
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SILYLATION OF CELLULOSE WITH TRICHLOROSILANE AND TRIETHOXYSILANE IN HOMOGENEOUS LiCl/N,N-DIMETHYLACETAMIDE SOLUTION*[J]. 2000, 18(2): 161-168.
DOI：

SILYLATION OF CELLULOSE WITH TRICHLOROSILANE AND TRIETHOXYSILANE IN HOMOGENEOUS LiCl/N,N-DIMETHYLACETAMIDE SOLUTION*[J]. 2000, 18(2): 161-168. DOI：

摘要

Silyl celluloses (SiC) were prepared by reacting cellulose with chloropropyltrichlorosilane (CPTCSi) andchloropropyltriethoxysilane (CPTESi) in LiCl/N

N-dimethylacetamide (DMAc). The Si content in the silyl cellulose could becontrolled by adjustment of the molar ratio of silane and cellulose. FT-IR spectra showed that cellulose was readily reactedwith the above two silane reagents

and the reactivity of CPTCSi is higher than that of CPTESi. It was presumed that the reaction process belongs to graft-polymerization.The results of differential thermal analysis (DTA) indicated that the thermostability of the materials produced increased with the increase of Si content in the sample.The acid resistance of the samples SiC in 1 mol/L HCl aqueous solution was improved significantly.When Si content was ca.20%

the silyl cellulose has excellent thermostability

hydrophobicity

low density and stability in 1 mol/L HCl aqueous solution

owing to crosslinking of cellulose chain with silane.

Abstract

Silyl celluloses (SiC) were prepared by reacting cellulose with chloropropyltrichlorosilane (CPTCSi) andchloropropyltriethoxysilane (CPTESi) in LiCl/N

the silyl cellulose has excellent thermostability

hydrophobicity

low density and stability in 1 mol/L HCl aqueous solution

owing to crosslinking of cellulose chain with silane.

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