公开(公告)号：US5151748A

公开(公告)日：1992-09-29

申请号：US563762

申请日：1990-08-07

申请人： Anthony J. Bur ,  Robert E. Lowry ,  Steven C. Roth ,  Charles L. Thomas ,  Francis W. Wang

发明人： Anthony J. Bur ,  Robert E. Lowry ,  Steven C. Roth ,  Charles L. Thomas ,  Francis W. Wang

IPC分类号： G01N1/30 ,  G01N11/00 ,  G01N21/64 ,  G01N33/44

CPC分类号： G01N21/6445 ,  G01N11/00 ,  G01N1/30 ,  G01N2021/6439 ,  G01N33/44

摘要： A method of measuring fluid properties of a polymer melt, undergoing shear and/or extensional flow which utilizes fluorescent anisotropy. The method utilizes a polymeric chromophore which includes a bifunctional anthracene that is covalently bonded to polybutadiene. The invention also involves an optical probe which is designed to be inserted into existing temperature and/or pressure probe ports in processing equipment. The probe includes a rotatable polarizer and emission collection fibers.

摘要翻译： 测量聚合物熔体的流体性质的方法，其经历使用荧光各向异性的剪切和/或拉伸流动。 该方法使用包含共价键合到聚丁二烯的双功能蒽的聚合物发色团。 本发明还涉及一种光学探针，其被设计成插入到处理设备中的现有温度和/或压力探测端口中。 探头包括可旋转的偏振器和排出物收集纤维。

公开(公告)号：US5598005A

公开(公告)日：1997-01-28

申请号：US389823

申请日：1995-02-15

申请人： Francis W. Wang ,  Robert E. Lowry ,  King-Fu Lin

发明人： Francis W. Wang ,  Robert E. Lowry ,  King-Fu Lin

IPC分类号： A61F2/46 ,  G01N21/64 ,  G01N33/44

CPC分类号： G01N21/648 ,  A61B17/8836 ,  G01N21/64 ,  A61B2017/883 ,  G01N33/44

摘要： The change in the peak fluorescence wavelength of a small amount of a fluorescent compound, i.e., a fluorophore, which has been dissolved in a polymerizing material or a thermoplastic polymer is used to determine the extent of cure or solidification, respectively. The measured wavelength-shift can either be compared with a previously determined correlation to obtain an absolute value for the extent of cure, or can be utilized to compare or maintain an acceptable extent of cure throughout a manufacturing or a clinical process. Similarly, in the processing of a thermoplastic polymer by injection molding, the measured wavelength shift can either be compared with a previously determined correlation to obtain an absolute value for the temperature of the polymer, or can be utilized to adjust the injection molding cycle so that the mold is opened at the optimum times. The fluorophores used in the method are preferably selected from a class of fluorophores comprising alpha, omega substituted linear alkenes having an electron accepting group attached at the alpha position and an electron donating group attached at the omega position.

摘要翻译： 使用溶解在聚合材料或热塑性聚合物中的少量荧光化合物即荧光团的峰值荧光波长的变化来分别确定固化或固化的程度。 测量的波长漂移可以与先前确定的相关性进行比较，以获得固化程度的绝对值，或者可以用于在整个制造或临床过程中比较或维持可接受的固化程度。 类似地，在通过注射成型处理热塑性聚合物时，将测量的波长偏移与先前确定的相关性进行比较以获得聚合物温度的绝对值，或者可用于调节注射成型周期，使得 模具在最佳时间打开。 在该方法中使用的荧光团优选选自一类荧光团，其包括在α位置附有电子接受基团的α，ω-取代的线性烯烃和连接在ω位置的给电子基团。