Correlation analysis between biodegradable nature and microstructure of functional hybrid materials using biomass

生物质功能杂化材料的生物降解性与微观结构的相关性分析

• 批准号: 09650888
• 负责人: OHTANI Hajime
• 金额: $ 2.11万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650888/
• 关键词: Biomass; Biodegradation; Hybrid materials; Chitin; Polymer blend; Pyrolysis; Pyrolysis-gas chromatography; Oxalic acid; ビオノーレ

Firstly, anew method to determine directly and rapidly the degree of acetylation of chitin was developed based on reactive pyrolysis-gas chromatography in the presence of an oxialic acid aqueous solution. The degree of acetylation was precisely determined on the basis of peak intensities of the characteristic pyrolysis products. The observed values were in good agreement with those obtained by ^1H-NMR and the other methods. Moreover, the proposed technique was applicable to any kinds of chitin samples over the whole range of acetylation including insoluble chitin and perfectly acetylated artificial chitin having higher crystallinity to which ^1H NMR had been inapplicable.Next, chtin derivative/poly(vinyl chloride) (PVC) hybrids were characterized mainly in terms of their miscibility and sites of the intermolecular interactions by temperature programmed pyrolysis (TPPy)-mass spectrometry and TPPy-atomic emission detection. Stepwise degradation apparently in three stages was commonly observed for the hybrids corresponding to the degradation of the respective blending polymers. However, each degradation peak temperature proved to change correlating to the miscibility of the hybrids. Moreover, during the dehydrochlorination stage for PVC at relatively lower temperatures below 300ﾟC, the evolution of many characteristic products formed from the chitin derivative and PVC were triggering the degradation of the chitin derivatives which should be stable up to ca. 350ﾟC.

首先，在草酸水溶液存在下，建立了一种基于反应裂解-气相色谱法直接快速测定甲壳素乙酰化度的新方法。根据特征热解产物的峰强度精确确定乙酰化度。实验结果与~ 1H-NMR及其它方法的测定结果一致。此外，所提出的技术适用于整个乙酰化范围内的任何种类的甲壳素样品，包括不溶性甲壳素和具有更高结晶度的完全乙酰化的人工甲壳素，^1H NMR不适用于此。壳聚糖衍生物/聚聚氯乙烯（PVC）的杂化物的特点主要是在他们的可溶解性和网站的分子间相互作用的程序升温热解（TPPy）。质谱和TPPy-原子发射检测。通常观察到与相应共混聚合物的降解相对应的混合物在三个阶段中明显地逐步降解。然而，每个降解峰温度被证明与混合物的可降解性相关。此外，在PVC在低于300 ℃的相对较低温度下的脱氯化氢阶段期间，由甲壳质衍生物和PVC形成的许多特征产物的形成引发甲壳质衍生物的降解，甲壳质衍生物应稳定至约100 ℃。350摄氏度

项目成果

石田康行: "反応熱分解ガスクロマトグラフィーによる合成高分子及び天然有機物のキャラクタリゼーション" 分析化学. Vol.47(10). 673-688 (1998)

Yasuyuki Ishida：“通过反应热解气相色谱法表征合成聚合物和天然有机物质”，《分析化学》第 47 卷（10）。

石田康行: "反応熱分解ガスクロマトグラフィーによる合成高分子及び天然有機物のキャラクタリゼーション" 分析化学. Vol.47 (10). 673-688 (1998)

Yasuyuki Ishida：“通过反应热解气相色谱法表征合成聚合物和天然有机物质”，《分析化学》第 47 卷 (10)。

Yasuyuki Ishida: "Analysis of Lipid Components in Zooplankter Individuals by Reactive Pyrolysis-Gas Chromatography in the Presence of Organic Alkali" Biological Sciences in Space. Vol.12 (2). 131-135 (1998)

Yasuyuki Ishida：“在有机碱存在下通过反应热解气相色谱分析浮游动物个体的脂质成分”太空生物科学。

H.SAto et al.: "Characterization of Functional Polymers by Temperature Programd Pyrolysis-Mass Spectrometry" Journal of Mass Spectrometry Society of Japan. Vol.46(4). 283-288 (1998)

H.SAto 等人：“通过程序升温热解-质谱法表征功能聚合物”，日本质谱学会杂志。

青井啓悟: "キチンを基盤とするバイオポリマーハイブリッドの設計" 高分子論文集. Vol.55 (9). 501-511 (1998)

Keigo Aoi：“基于甲壳素的生物聚合物杂化物的设计”Kobunshi Proceedings Vol.55 (9) (1998)。