Determination of the solubility parameter of cellulose acrylate using inverse gas chromatography

来源 :科学通报(英文版) | 被引量 : 0次 | 上传用户:RK0707
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The solubility parameters of cellulose acrylate substituted degree 2.12 (CEA) have been calculated from the measured retention data by inverse gas chromatography at various temperatures. The weight fraction activity coefficients of the solvents at infinite dilution (Ω∞1), the Flory-Huggins thermodynamic interaction parameters between CEA and solvents (X∞12), the excess molar heats of mixing (△Hs1), the partial molar heats of mixing at infinite dilution (△H∞1), the solubility parameters of solvent (δ1), and the solubility parameters of CEA (δ2), were calculated at various temperatures. The δ2 of the CEA was 17.32, 18.00, 18.13, 18.54, 19.39 at 55, 60, 65, 70 and 75℃, respectively.
其他文献
应用相对论Eikonal近似计算了用不同模型给出的6,8He的电荷半径和电荷分布的形状因子,并将结果与6He和4He的实验结果进行了比较.结果显示不同模型给出的电荷半径和电荷形状因
The present paper describes multiple splicing types of OsRIX4, an RAD21 homolog in rice. A type of alternative splicing (AS), distinctive from all five previous
利用宇宙线对ATLAS实验上的监控漂移管室进行了性能研究,根据BEE室的测试标准及步骤简要的测量了漂移管的主要特性.包括:漏电流、噪声水平、漂移时间分布、电荷分布及探测效
Ferrimagnet is a kind of basic and important multi-sublattice magnet material. It has attracted more and more attention of physicists and mathematicians. Many r
核遮蔽和能量损失效应是p-A碰撞中两种重要的初态核效应.本文利用从轻子-原子核深度非弹性散射实验数据中抽取的束缚核子的部分子分布函数,在色弦模型中研究了Drell-Yan双轻
It is well known that there exists a global solution to the heat flow of H-systems.If the solution satisfies a certain energy inequality,it is global regular wi
Rapid progress in high-throughput biotechnologies (e. g. microarrays) and exponential accumulation of gene functional knowledge makes it promising for systemati
北京谱仪Ⅱ的μ探测器的位置分辨和击中效率与带电粒子的动量和入射位置有关,利用选取的宇宙线样本和强子样本对μ探测器逐层进行了标度,并利用构造的效率比函数在物理分析中
讨论了磁场中夸克物质的非轻子弱作用过程.改进了在弱磁场情况下的近似计算方法,分别给出了强弱磁场下非轻子过程的反应率的表达式,以及一定条件下的近似表达式.结果显示,强
An Agilent 6890N GC equipped with both FID and Agilent 5975 MSD analyzer has been employed to analyze C5-C13 hydrocarbon fractions of crude oils. A technical co