1992 Fiscal Year Final Research Report Summary
DEVELOPMENT OF FUNCTIONAL POLYMERS CARRYING VARIOUS FUNCTIONAL GROUPS ON THE CARBON MAIN CHAIN
| Project/Area Number |
03650680
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
有機工業化学
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| Research Institution | KYUSHU INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
KITO Taketoshi KYUSHU INSTITUTE OF TECHNOLOGY, FACULTY OF ENGINEERING, PROFESSOR, 工学部, 教授 (10039076)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHINAGA Kohji KYUSHU INSTITUTE OF TECHNOLOGY, FACULTY OF ENGINEERING, ASSOCIATE PROFESSOR, 工学部, 助教授 (00040436)
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| Project Period (FY) |
1991 – 1992
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| Keywords | FUNCTIONAL GROUP CONVERSION / POLYOL POLYMER / COUPLING REAGENT / REDISPERSIBLE SILICA SOL / FUNCTIONAL POLYMER / FUNCTIONAL MATERIAL / POLYMER FROM DIOL |
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| Research Abstract |
We have reported the synthesis of novel polyol polymers, which * ave many reactive hydroxymethyl side chains pendant on the main chain, from diols in the presence of a weak base such as potassium phenoxide (Macromolecules, 1985, 18, 846). A wide variety of applications can be conceivable from these polyol polymers by chemical modification of the hydroxymethyl groups. One application involves preparation of a new elastic material, which was success-fully synthesized by acylation with maleic anhydride, followed by crosslinking with styrene (J. Appl. Polym. Chem., 1988, 35, 1593).
In this investigation, we carried out the functional group transformation from hydroxymethyl group to other functional groups, such as * CH_2X (X=CI, Br, I);* COOH * COOCH_3 * -CONH_2 ; * -CH_2ONa * -CH_2OCH_2CH=CH_2 * -CH_2OCH_2CH_2CH_2Si(Me)_2OEt (1); * -CH_2OSi(Me(_2OEt (2); The last two groups were applied to the modification of silica surface. We modified silica surface with coupling reagent 1 or 2, according to the following reaction, where Silica-OH designates silanol groups.
Silica-OH + EtOSi-(a coupling reagent of 1 or 2) * Silica-O-Si-
The resulting silica gained hydrophobic property, and became redispersible in the original solvent, and even in n-hexane, after removal of dispersing solvents.
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