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大豆油脂肪酸多酯的制备及其对PVC增塑性能研究 被引量:3
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作者 冯国东 贾普友 +3 位作者 汤慧敏 张猛 胡云 周永红 《林产化学与工业》 EI CAS CSCD 北大核心 2019年第5期50-58,共9页
以大豆油为起始原料,经过环氧化、酯交换等反应制得环氧大豆油脂肪酸甲酯(ESAO);然后,ESAO、醋酸和醋酸酐“一锅法”反应制备出大豆油脂肪酸多酯(SF-PE)。GC分析表明:ESAO中的甲酯大于96%;IR、1HNMR和13CNMR等分析手段对产物结构表征,... 以大豆油为起始原料,经过环氧化、酯交换等反应制得环氧大豆油脂肪酸甲酯(ESAO);然后,ESAO、醋酸和醋酸酐“一锅法”反应制备出大豆油脂肪酸多酯(SF-PE)。GC分析表明:ESAO中的甲酯大于96%;IR、1HNMR和13CNMR等分析手段对产物结构表征,证明了SF-PE被成功合成;TG分析表明SF-PE的热稳定性能要优于ESAO。对比分析了以SF-PE、ESAO、环氧大豆油(ESO)和市售环氧脂肪酸甲酯(EFAM)作为增塑剂制备PVC制品的机械性能、动态机械性能和热稳定性,用树脂量50%的SF-PE增塑PVC样品的拉伸强度为19MPa,邵氏硬度为90.2,综合机械性能优于其他3种增塑剂,玻璃化转变温度(Tg)为26.4℃;SF-PE增塑PVC样品的耐低温性能优于ESO;热稳定性与ESAO相当,要优于EFAM,但是不及ESO。 展开更多
关键词 大豆油脂肪酸多酯 油脂基增塑剂 机械性能 环氧大豆油脂肪酸 交换
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蔗糖脂肪酸多酯的探索性研究
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作者 谢晋谋 《甘蔗糖业》 2002年第1期36-37,28,共3页
采用蔗糖离子催化的无溶剂酯交换法合成蔗糖脂肪酸多酯;用萃取的方法对粗产品进行分离提纯;用薄层分析检验最终产品的纯度;通过测定羟值来间接测定蔗糖多酯的酯化度。
关键词 脂肪酸多酯 无溶剂法 分离 提纯 薄层分析 化度 测定 合成
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烷基糖苷和水苏糖脂肪酸多酯的合成及性质
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作者 Casi.,CA 周卯 《日用化学工业译丛》 1990年第4期20-23,共4页
关键词 烷基糖苷 水苏糖 脂肪酸多酯 合成
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棉子糖脂肪酸多酯一步合成法
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作者 余兴华 《广州食品工业科技》 1990年第1期40-42,共3页
材料与方法材料棉子糖十一乙酸酯,Florisil(一种硅酸镁载体),纯豆油和红花油,辛酸甲酯和硬脂酸甲酯,标准糖酯,蔗糖硬脂酸酯,H_2SO_4-重铬酸盐溶液(50%H_2SO_4),NaOH(ACS级),金属钠,石油醚,戊烷,已烷,甲醇(HPLC级),无水Na_2SO_4等。仪... 材料与方法材料棉子糖十一乙酸酯,Florisil(一种硅酸镁载体),纯豆油和红花油,辛酸甲酯和硬脂酸甲酯,标准糖酯,蔗糖硬脂酸酯,H_2SO_4-重铬酸盐溶液(50%H_2SO_4),NaOH(ACS级),金属钠,石油醚,戊烷,已烷,甲醇(HPLC级),无水Na_2SO_4等。仪器三颈园底烧瓶,磁力搅拌器,Friedrichs冷凝器。 展开更多
关键词 棉子糖 脂肪酸多酯 一步合成法
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食品添加剂蔗糖脂肪酸酯的合成与应用
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作者 王敏 《杭州食品科技》 2006年第3期19-22,共4页
本文介绍了国外最新开发的蔗糖脂肪酸多酯的合成方法及其广泛的应用范围。
关键词 非离子型表面活性剂 食品添加剂 蔗糖脂肪酸多酯
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蔗糖酯和蔗糖脂肪酸多酯的合成与发展 被引量:3
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作者 邹英昭 于江虹 《食品科技》 CAS 北大核心 2006年第7期167-169,172,共4页
介绍了食品乳化剂蔗糖酯和蔗糖脂肪酸多酯,重点综述了蔗糖酯和蔗糖脂肪酸多酯的合成方法,包括溶剂法、无溶剂法和相转移催化法等不同的合成方法,并对蔗糖酯和蔗糖脂肪酸多酯的发展作出了建议。
关键词 食品乳化剂 蔗糖 蔗糖脂肪酸多酯 合成
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食品添加剂蔗糖脂肪酸酯的合成与应用
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作者 汪多仁 《宁波化工》 1997年第2期33-34,共2页
本文介绍了国外最新开发的蔗糖脂肪酸多酯的合成方法及其广泛的应用范围。
关键词 非离子型表面活性剂 食品添加剂 蔗糖脂肪酸多酯
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蔗糖聚酯的合成及分离研究 被引量:2
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作者 陈薇 莫恩青 梁晶 《中小企业科技》 2007年第2期50-51,共2页
蔗糖.在适当的条件下可以与8个以内的脂肪酸分子脱水缩合.形成不同酯化度的脂肪酸蔗糖酯;蔗糖聚酯(sucrosepolyester,SPE)通常指的是三酯以上的蔗糖酯。蔗糖的8个羟基有6个以上发生酯化时(即酯化度=6-8).才称之为SPE,即蔗糖... 蔗糖.在适当的条件下可以与8个以内的脂肪酸分子脱水缩合.形成不同酯化度的脂肪酸蔗糖酯;蔗糖聚酯(sucrosepolyester,SPE)通常指的是三酯以上的蔗糖酯。蔗糖的8个羟基有6个以上发生酯化时(即酯化度=6-8).才称之为SPE,即蔗糖多酯。蔗糖脂肪酸多酯是由蔗糖与脂肪酸发生酯化反应形成的蔗糖南的混合物,酯化程度在6个羟基以上的脂肪酸蔗糖酯性质与食用油脂相似。 展开更多
关键词 蔗糖聚 脂肪酸蔗糖 分离 合成 脂肪酸多酯 化度 蔗糖多酯 化反应
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Identification of Blood Serum Lipid Compositions Isolated from Diabetic PatientsmType II Treated with Polyherbs by Capillary Gas.Chromatography
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作者 Nahida Saeed AI-Chalabi 《Journal of Agricultural Science and Technology(B)》 2014年第6期464-475,共12页
This study included treatment of diabetic patients--type II with a polyherbs containing Nigella sativa, Trigonell foenum-graceum, Cyperus rotundus, Teucrium polium divided into two groups, first group was taken herbs ... This study included treatment of diabetic patients--type II with a polyherbs containing Nigella sativa, Trigonell foenum-graceum, Cyperus rotundus, Teucrium polium divided into two groups, first group was taken herbs with chemical treatment (drugs) and the other group which used herbs only. These groups were compared with healthy persons as a control group. Separation of the lipid component containing in the serum of two groups under study for diabetes mellitus patient--type lI before and after treatment with polyherbs by patients were performed. The separation of the components of different kinds of lipid parts like cholesterol ester (CE), triglyceride and phospholipids, in the blood using thin layer chromatography (TLC) and capillary gas chromatography (CGC). The results of this study for ester cholesterol part of serum patients show that there was a significant increase in the percentage of saturated fatty acid (SFA) and monounsaturated fatty acid (MUFA) before the treatment of the two groups compared to the control group and a significant decrease was observed in the percentage of these fatty acid after the treatment by polyherbal mixture than the percentage before treatment. Also, the results for the same part of ester cholesterol serum were showed a significant decrease in percentage of polyunsaturated fatty acid (PUFA) in the two groups of diabetes mellitus patients in comparison with the control group and there were a significant increase observed in PUFA percentage after the treatment. For triglyceride part in serum lipid, the results of this study were shown that there was a significant increase in percentage of SFA and PUFA before treatment in comparison with control group and after treatment for three months of the two groups of patients, shows a significant decrease in SFA but an increase in the percentage of PUFA was observed than that observed before treatment, also, there was a significant decrease in MUFA before treatment comparison with control group, while there was a significant increase which was observed after treatment in a percentage for the two groups of triglyceride part in serum lipid. The results indicated that there was a significant decrease in percentage of SFA before and after also in MUFA after the treatment in both groups compared with control and a significantly increase in PUFA percentage was also shown for phospholipids part in the serum. 展开更多
关键词 Polyherbs diabetic patients CGC lipids composition Nigella sativa
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Esterification of Free Fatty Acids in Waste Cooking Oil by Heterogeneous Catalysts
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作者 刘丽艳 刘志敏 +1 位作者 唐国武 谭蔚 《Transactions of Tianjin University》 EI CAS 2014年第4期266-272,共7页
Waste cooking oil(WCO) is becoming the most promising alternative feedstock to produce biodiesel due to its low cost in China. In this study, NKC-9 ion-exchange resin and H-beta zeolite were selected as heterogeneous ... Waste cooking oil(WCO) is becoming the most promising alternative feedstock to produce biodiesel due to its low cost in China. In this study, NKC-9 ion-exchange resin and H-beta zeolite were selected as heterogeneous catalysts in the WCO esterification process and their esterification characteristics were compared by orthogonal experiments. NKC-9 resin showed higher activity and achieved a higher final conversion compared with H-beta zeolite under the same reaction conditions. Reusability experiments showed that NKC-9 resin still exhibited high activity after 5 runs. The effects of the mole ratio of alcohol to oil, reaction time, reaction temperature and the catalyst dose were investigated by multifactor orthogonal analysis. The influence of the free fatty acid(FFA) content was also investigated, and the result showed that the esterification rate could be as high as 98.4% when the FFA content was 6.3wt%. 展开更多
关键词 BIODIESEL waste cooking oil heterogeneous catalyst ESTERIFICATION
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