Studies on Miscibility of Polymers
نویسندگان
چکیده
منابع مشابه
The Effect of Additives Interaction on the Miscibility and Crystal Structure of Two Immiscible Biodegradable Polymers
Poly lactic acid (PLLA) is a promising biopolymer, obtained from polymerization of lactic acid that is derived from renewable resources through fermentation. The characteristic brittleness of PLLA is attributed to slow crystallization rates, which results in the formation of the large spherulites. Its glass temperature is relative high, above room temperature and close to 60 °C, and therefore i...
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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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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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An analysis of the demands of ULSI and GSI technologies shows the necessity of multi-layer devices to reduction of signal transmission delay time. This reduction is realized by using a better conductor metal, such as Cu and a surrounding insulator with low capacity than actually used, such as Dow Cyclotene 3022. In this paper, the results of evaporated and sputtered Cu to Dow Cyclotene 3022 wer...
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ژورنال
عنوان ژورنال: Kobunshi Kagaku
سال: 1969
ISSN: 1884-8079,0023-2556
DOI: 10.1295/koron1944.26.193