Developmental construction of a flow type GPC/LALLS/Reversing Pulse Electric Birefringence apparatus for polymer solution study

聚合物溶液的溶液性质通常取决于溶质聚合物的形状、分子量和分子量分布。在目前的科研开发中，我们设计并构建了一种流动型GPC/LALLS/RPEB（凝胶渗透色谱法/小角度激光散射/反向脉冲电双折射）装置，用于同时测定重均分子量，分子量分布，GPC/LALLS装置由两个柱和一个泵系统和一个Tohso LS-1系统组成。8000 S光散射光度计（Tohso Co.，东京）串联。RPEB装置的设计和建造在我们的实验室与一些新的改进已经报道的设计原则，目前的目的。本装置装有脉冲电压13 Ω、脉宽5 Ω的高压换向脉冲发生器 ...更多信息 00毫秒。设计并制作了一种流动型克尔池，其设计原则是节省池体积，防止样品溶液再混合。这是通过使用两个细不锈钢管实现的，所述细不锈钢管具有0.2mm直径和0.5mm宽度的孔，所述孔可以用作电极和样品溶液的入口/出口。本克尔池具有2微升的体积，非常适合于流动型测量。离子强度控制系统未安装在仪器上，因为它会干扰样品溶液流（再混合），并使EB数据无用。该系统由两台微机控制，一台用于GPC/LALLS系统，另一台用于RPEB系统。整个测量由样品注入GPC系统时的触发信号启动。EB和脉冲信号都通过瞬态转换器（Riken Densi Co.，然后通过自制的接口传送到NEC PC-9821 Bf-V8 W微型计算机上，并将数据存储在软盘上。少

The solution property of the polymer solutions is normally dependent on the shapes, molecular weights, and molecular weight distributions of the solute polymers. In the present scientific developmental research, we designed and constructed a flow-type GPC/LALLS/RPEB (gel permeation chromatography/low-angle-laser-light scattering/reversing-pulse electric birefringence) apparatus for the simultaneous determination of the weight-average-molecular-weight, the molecular-weight-distribution, and the electro-optical and hydrodynamic properties of the solute polymers.GPC/LALLS apparatus consists of two columns and a pump systems and a Tohso LS-8000S light scattering photometer (Tohso Co., Tokyo) connected in series. RPEB apparatus was designed and constructed in our laboratory with some novel improvements of already reported design principles for the present purpose. The present RPEB apparatus is equipped a high voltage reversing pulse generator of the pulse voltage of 13 kv and its width of 5 … More 00 msec. A flow type Kerr cell was newly designed and constructed, of which design principle is the cell volume saving to prevent a remixing of the sample solution. This was attained by using two thin stainless steel pipes with a hole of 0.2 mm diameter and 0.5 mm width, which can serve as electrodes and in /out-lets of the sample solution. The present Kerr cell has a 2 microliter of volume and is very suitable for the flow type measurements. The ionic strength controlling system is not mounted to the apparatus, since it disturbs the sample solution flow (remixing) and makes the EB data useless. It is making improvements to filfull its function.The measurement and apparatus are controlled by two microcomputers ; the one is for GPC/LALLS and the other is for RPEB systems. The over all measurement is initiated by a trigger signal on the sample injection to the GPC system. Both EB and pulse signals are digitized through a transient converter (Riken Densi Co., Tokyo) and then transferred to an NEC PC-9821 Bf-V8W microcomputer via a homemade interface, and the data are stored on a floppy disk. Less