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双醛淀粉

双醛淀粉的相关文献在1994年到2022年内共计130篇,主要集中在轻工业、手工业、化学工业、化学 等领域,其中期刊论文85篇、会议论文6篇、专利文献414882篇;相关期刊60种,包括重庆文理学院学报(社会科学版)、生物加工过程、食品与药品等; 相关会议6种,包括华东地区第13届实验动物科学学术交流会、甘肃省化学会第二十八届年会暨第十届中学化学教学经验交流会、两广造纸学会2008年学术年会等;双醛淀粉的相关文献由297位作者贡献,包括左迎峰、吴义强、李萍等。

双醛淀粉—发文量

期刊论文>

论文:85 占比:0.02%

会议论文>

论文:6 占比:0.00%

专利文献>

论文:414882 占比:99.98%

总计:414973篇

双醛淀粉—发文趋势图

双醛淀粉

-研究学者

  • 左迎峰
  • 吴义强
  • 李萍
  • 刘文杰
  • 刘晓宁
  • 刘永
  • 沈斌
  • 周家华
  • 肖俊华
  • 魏荣卿
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 刘建容; 潘邦杰; 沈靖东; 杨永彬
    • 摘要: 将十二烷基硫酸钠(SDS)和大豆分离蛋白(SPI)分散在水中进行胶化得到大豆蛋白基础胶,再与双醛淀粉糊化液混合制成可用于人造板行业的胶粘剂。采用单因素试验法探讨了双醛淀粉用量对大豆蛋白胶粘剂粘度、粘接性能与耐水性能的影响,以及固化时间与温度对大豆蛋白胶粘剂粘接性能和耐水性能的影响。通过扫描电镜(SEM)分析了双醛淀粉与大豆蛋白基础胶的相容性。结果表明:双醛淀粉与大豆蛋白基础胶有良好的相容性,当双醛淀粉添加量为3.0 g·mL^(-1)时,大豆蛋白胶粘剂的粘接强度和耐水强度达到4.46MPa和2.61MPa。当固化温度超过120°C时,最佳固化时间约为15min,随着固化时间延长,粘接强度呈下降趋势,而耐水强度趋于平稳。
    • 刘雅奇; 刘运浩; 李普旺; 王超; 宋书会; 何祖宇; 周闯; 杨子明
    • 摘要: 以热塑性双醛淀粉为基体,菠萝叶纤维为增强材料,采用热压成型的方法制备菠萝叶纤维/热塑性淀粉复合材料,研究了不同填充量的菠萝叶纤维对复合材料的力学、理化及降解性能的影响。研究结果表明,当菠萝叶纤维填充量为15%,复合材料的拉伸性能最佳,拉伸强度和断裂伸长率分别为7.4 MPa,1.25%;菠萝叶纤维填充量为20%时的弯曲强度和弯曲模量分别为13.18,2245.54 MPa。随着纤维填充量的增加,复合材料的密度逐渐减少、含水率逐渐增加、降解失重率逐渐增加。
    • 杨小玲; 赵维; 王欢; 孟小华
    • 摘要: 以马铃薯淀粉为原料,高碘酸钾为氧化剂制备双醛淀粉,然后添加一定的添加剂,采用流延法制备双醛淀粉复合膜.结果表明:超声处理能提高双醛淀粉醛基含量,当马铃薯淀粉质量分数为5%、高碘酸钾/淀粉质量比为1.4:1时,醛基含量为62.39%;添加明胶的双醛淀粉复合膜表面光滑平整,力学性能高,综合性能好.
    • 左迎峰; 李萍; 屠茹茹; 赵星; 袁光明; 吴义强
    • 摘要: In this paper, the response surface method was used to optimize the preparation process of dialdehyde starch by one-step acidolysis oxidation.Then corn starch as raw material, hydrochloric acid (HCl) as acid solution and sodium periodate (NaI O4) as oxidant. The concentration of HCl, the concentration of starch milk, the reaction temperature and the reaction time were the variables. Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) analysis proved that the dialdehyde starch was successfully prepared. The gelatinization properties, particle morphology, crystalline structure and thermal properties of dialdehyde starch were characterized by rotating viscometer, scanning electron microscope (SEM) , X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA) . The results showed that the influence of the aldehyde group content was reaction temperature> reaction time> starch milk concentration> HCl concentration. The optimum preparation process was as follows: the HCl concentration was 1. 2 mol/L, the concentration of starch milk was 7%, the reaction temperature was 49 °C, and the reaction time was 4 h. At this moment, the aldehyde group content was 85. 17%, close to the theoretical value maximum of 86. 26%, showing the optimized result believable. After acid oxidation, the gelatinization viscosity of dialdehyde starch was reduced to 30 mP a·s, and the reaction activity and maneuverability were significantly improved. SEM analysis showed that the dialdehyde starch granules were depressed in the middle, and showed a ring structure. XRD analysis showed that the crystalline structure of the starch was destroyed, and the recrystallization increased the crystallinity to 36. 05%. TGA analysis showed that the initial temperature of thermal decomposition of dialdehyde starch was decreased, but the residual ratio of decomposition was increased, indicating that the thermal plasticity and thermal stability increased.%本工作采用响应曲面法优化了一步酸解氧化制备双醛淀粉的工艺, 以玉米淀粉为原料、盐酸 (HCl) 为酸解剂、高碘酸钠 (NaIO4) 为氧化剂, 设置HCl浓度、淀粉乳浓度、反应温度和反应时间为变量.傅里叶变换红外光谱 (FT-IR) 和X射线光电子能谱 (XPS) 分析证明本实验成功制得了双醛淀粉.采用旋转黏度计、扫描电子显微镜 (SEM) 、X射线衍射仪 (XRD) 和热重分析仪 (TGA) 对双醛淀粉的糊化性能、颗粒形貌、结晶结构和热性能进行了表征.结果表明, 对醛基含量的影响大小依次为反应温度>反应时间>淀粉乳浓度> HCl浓度.最佳制备工艺为:HCl浓度为1. 2mol/L, 淀粉乳浓度为7%, 反应温度为49°C, 反应时间为4 h.在该条件下制得的双醛淀粉的醛基含量为85. 17%, 与理论最大值86. 26%接近, 说明优化结果可信.酸解氧化后, 双醛淀粉的糊化黏度降至30 mPa·s, 可显著提高反应活性和可操作性.SEM分析显示, 双醛淀粉颗粒中间凹陷, 呈现出环状结构.XRD分析表明, 淀粉的结晶结构发生破坏, 重结晶使结晶度增大至36. 05%.TGA分析表明, 双醛淀粉受热分解起始温度降低, 但分解残余率提高, 说明其热塑性和热稳定性有所提高.
    • 李萍; 吴义强; 刘文杰; 左迎峰; 吕建雄; 屠茹茹
    • 摘要: 以玉米淀粉为原料,通过高碘酸钠在酸性条件下氧化得到双醛淀粉。将双醛淀粉与甲醛一起作为醛基给予体,与间苯二酚(R)共缩聚制备间苯二酚-双醛淀粉-甲醛(RDSF)树脂胶黏剂。研究了双醛淀粉用量、共反应p H、共反应温度和共反应时间对RDSF树脂胶黏剂固体含量、黏度、固化时间和胶接强度的影响。结果表明,双醛淀粉加入量为0. 15mol,共反应p H值为9. 0,共反应温度为70°C,共反应时间为90 min时,制得的RDSF树脂胶黏剂综合性能最佳,此时固体含量为42. 59%,黏度为725 m Pa·s,固化时间为53 s,干状胶合强度为1. 38 MPa,湿状胶合强度为1. 17 MPa。傅里叶变换红外光谱测试发现RDSF树脂的结构近似于间苯二酚-甲醛(RF)树脂,表明RDSF树脂可代替RF树脂使用。差示扫描量热分析发现RDSF树脂的固化温度和固化焓值低于RF树脂,固化峰值温度为77. 43°C,固化焓值为-238. 91 J/g,表明其固化能耗更低。
    • 陈妮娜; 邱玮玮
    • 摘要: 以Ca2+改性果胶(PEC)和甘油(Gl)共混膜为mPEC-GI阳膜;以柠檬酸钠改性壳聚糖(CS)和甘油(Gl)共混膜为mCS-GI阴膜,分别考察GI和交联时间对阴、阳膜的含水率、离子交换容量、溶胀度及机械性能的影响,从而确定阴阳膜最佳配方制备了改性壳聚糖-甘油-果胶(mCS-Gl-PEC)双极膜.通过FTIR、SEM、接触角对膜的结构形态进行表征与测试.研究结果表明,所制得的双极膜具有良好的电化学性能,在酸碱溶液中机械强度高、溶胀小.将mCS-Gl-PEC双极膜用作为电解氧化制备双醛淀粉(DAS)电解槽中阴阳两室间的隔膜,正交分析法研究了温度、淀粉和硫酸浓度、电流密度对电氧化制备双醛淀粉的生成量和电流效率的影响.实验结果表明,阳极液WNaBr=2%,CH2SO4=0.15 mol·L-1,W淀粉=4%,阴极液CH2SO4=0.05 mol·L-1,电流密度30 mA·cm-2下40°C电解,电氧化生成双醛淀粉的DAS含量为64.56%,电流效率为65.96%.
    • 朱颖; 刘文杰; 左迎峰; 吴义强; 肖俊华; 赵星
    • 摘要: 以玉米淀粉为原料,盐酸为酸解剂,高碘酸钠为氧化剂,通过酸解氧化法制备双醛淀粉.采用正交试验法研究了盐酸浓度、 反应温度和反应时间对双醛淀粉醛基含量的影响,通过效应曲线分析、 交互作用和显著性分析优化了酸解氧化工艺.结果表明:对双醛淀粉醛基含量的影响因素依次为反应温度、 反应时间、 盐酸浓度;双醛淀粉制备的最优工艺条件为盐酸浓度0.9 mol/L、反应温度55°C、 反应时间2 h,在此工艺条件下得到双醛淀粉的醛基含量为69.56%.%Dialdehyde starch was prepared by the method of acid hydrolysis and oxidation, in which corn starch as raw material, hydrochloric acid as acid agent and sodium periodate as oxidant. The effect of concentration of hydro-chloric acid, reaction temperature and reaction time on the aldehyde content of dialdehyde starch was considered by orthogonal experiment. The process of acid hydrolysis and oxidation was optimized with response curve analysis, inter-action analysis and significant analysis. The results showed that the order of factors influencing aldehyde content of dialdehyde starch was reaction temperature, reaction time, concentration of hydrochloric acid. The optimum condi-tion was that the concentration of hydrochloric acid was 0. 9 mol/L, the reaction temperature was 55°C and the re-action time was 2 h. And aldehyde content of dialdehyde starch prepared for the optimum conditions was 69. 56%.
    • 刘文杰; 左迎峰; 吴义强; 肖俊华; 朱颖; 赵星
    • 摘要: 以玉米淀粉为原料,盐酸为酸解剂,高碘酸钠为氧化剂,采用一步酸解氧化法合成双醛淀粉,经傅里叶变换红外光谱仪表征证明成功制得了双醛淀粉.研究了反应温度、反应时间、盐酸浓度和淀粉乳浓度对双醛淀粉醛基含量的影响,并利用X射线衍射仪和热重分析仪进行了表征.结果表明,双醛淀粉的醛基含量随着反应温度的升高和反应时间的延长而增大, 55 °C和4 h后,酸解氧化趋于稳定.盐酸浓度和淀粉乳浓度过高会导致双醛淀粉的醛基含量下降,分别以0.6 mol/L和8%为宜.X射线衍射仪分析表明,随着盐酸浓度的增加,双醛淀粉的结晶度升高;热重分析仪分析表明,结晶度高的双醛淀粉热分解残余量也更多,而热分解初始温度随着盐酸浓度增加而降低.%Dialdehyde starch was synthesized by the one-step of acid hydrolysis and oxidation, taking corn starch as raw material, hydrochloric acid as acid agent and sodium periodate as oxidant.Fourier transform infrared spectroscopy characterization confirmed the successful synthesis of the dialdehyde starch.The effect of reaction temperature, reaction time, concentration of hydrochloric acid and starch emulsion concentration on aldehyde group content of dialdehyde starch was studied.And then the X-ray diffraction and thermogravimetric were used for characterization.The results showed that the aldehyde group content increased with the increase of reaction temperature and reaction time.When the temperature reached 50 °C and the time up to 4 h, the acid hydrolysis oxidation tended to be stable.High concentration of hydrochloric acid and starch would lead to the decline of aldehyde content, and the suitable concentration is 0.6 mol/L and 8% of hydrochloric acid and starch, respectively.X-ray diffraction analysis showed that with the increase of hydrochloric acid concentration, the crystallinity of the dialdehyde starch increased.Thermal gravimetric analysis showed a larger residual amount of thermal decomposition of the dialdehyde starch which possess a relatively higher crystallinity, and the initial temperature of thermal decomposition decreased with the increase of hydrochloric acid concentration.
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