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首页> 外文期刊>Journal of Applied Polymer Science >Thermoplasticization of bagasse. I. Preparation and characterization of esterified bagasse fibers
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Thermoplasticization of bagasse. I. Preparation and characterization of esterified bagasse fibers

机译：蔗渣的热塑化。一，酯化蔗渣纤维的制备与表征

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This research was to investigate the conversion of bagasse into a thermoformable material through esterification of the fiber matrix. For this purpose, bagasse was esterified in the absence of solvent using succinic anhydride (SA). The reaction parameters of temperature reaction, time, and amount of succinic anhydride added were studied. Ester content, Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical thermal analysis (DMTA) were used to characterize the chemical and thermal properties of the esterified fibers. The results showed that on reacting bagasse with SA in the absence of solvent, ester content up to about 48% could be obtained, Diester formation increased with increasing reaction time and temperature at high levels of ester content. Ester content determination of the esterified fibers and their corresponding holocelluloses showed that the reaction took, place in the lignin and holocellulose components of bagasse. The IR results showed that the crystallinity index of different esterified bagasse samples did not decrease as a result of increasing the ester content. DSC and TGA results showed that esterified-bagasse fibers were less thermally stable than the untreated fibers. DMTA results showed that esterification of the fibers resulted in a decrease in the tan delta peak temperature of the esterified fibers compared to the untreated fiber. (C) 2000 John Wiley & Sons, Inc. [References: 60]
机译：这项研究旨在研究通过纤维基质的酯化将甘蔗渣转化为可热成型的材料。为此目的，在不存在溶剂的情况下使用琥珀酸酐（SA）将甘蔗渣酯化。研究了温度反应的反应参数，时间和琥珀酸酐的添加量。使用酯含量，傅立叶变换红外（FTIR），热重分析（TGA），差示扫描量热法（DSC）和动态机械热分析（DMTA）来表征酯化纤维的化学和热学性质。结果表明，在不存在溶剂的条件下，使蔗渣与SA反应，可获得的酯含量高达48％，在高酯含量下，随着反应时间和温度的增加，二酯的形成增加。酯化纤维及其相应的全纤维素酯含量的测定表明该反应发生在甘蔗渣的木质素和全纤维素组分中。红外结果表明，不同酯化甘蔗渣样品的结晶度指数并没有因为增加酯含量而降低。 DSC和TGA结果表明，酯化的蔗渣纤维比未处理的纤维热稳定性差。 DMTA结果表明，与未处理的纤维相比，纤维的酯化导致酯化纤维的tanδ峰温度降低。 （C）2000 John Wiley＆Sons，Inc. [参考：60]

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