منابع مشابه
STUDIES ON DYE DOPED POLYMERS Abstract
The fluorescence and amplified spontaneous emission characteristics of rhodamine 6G impregnated in polyacrylamide is reported in this chapter. Using amplified spontaneous emission gain radiative and related properties of this dye doped matrix was measured. It was found that photostability of rhodamine 6G is unusually high in this matrix compared to other polymer hosts like polyrnethylmethacrylate.
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本稿はわた くしが停年退官するに当た り,口 腔 病学会で特別講演 した内容を骨子 とするものであ る。 ご承知のように,最 近の高分子歯科材料の進歩 には目ざましい ものがあるが,わ た くしは過去40 年にわた りこの進歩をみずか ら経験 してきた。 その進歩の経過をたどりなが ら,さ らにこの研 究の発展がこれか らの歯科医療にどうかかわって ゆ くのか,と いうことを考えてみたい。 人体の硬組織,歯 や骨が主 として無機質のリン 酸 カルシゥム(hydroxyapatiteな ど)と 有機質 のコラーゲンか ら構成されているように,最 近は 人工歯や人工骨の組成や構造を限 りな く天然のそ れに近づけようとする指向がみ られる。しかし, 歯や骨は体内で長い時間をかけて形成され,し か も新陳代謝によってその耐久性が維持されている のに対 し,人 工歯や人工骨にはその機能を付与...
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Using NMR spectroscopy and NMR imaging, the behaviour of polymers in supercritical CO2 (sc-CO2) using a custom-made cell designed from poly(ether ether ketone) (PEEK) has been observed. The mechanism of swelling of polymers in sc-CO2 and the overall effects of sc-CO2 on the transport properties of both small and large molecules has been studied. We report on the swelling characteristics of radi...
متن کاملPyrolysis Combustion Flow Calorimetry Studies on Some Reactively Modified Polymers
As a part of our continuing work to improve the flame retardance of some chain-growth polymers, by employing a reactive route, we have synthesized several unsaturated compounds containing either phosphorus (P), or both phosphorus (P) and nitrogen (N), bearing groups in different chemical environments. They included: diethyl(acryloyloxymethyl)phosphonate (DEAMP); diethyl(1-acryloyloxyethyl)phosp...
متن کاملOrgano-fluorine chemistry III
It is a pleasure to introduce the 3rd in the series of Thematic Issues on organo-fluorine chemistry for the Beilstein Journal of Organic Chemistry (BJOC). These series have become progressively more successful over time in terms of the number and quality of the contributions received. It is also pleasing to note that the profile and impact factor of the journal has increased steadily over this ...
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ژورنال
عنوان ژورنال: Kobunshi Kagaku
سال: 1959
ISSN: 1884-8079,0023-2556
DOI: 10.1295/koron1944.16.301