Analysis of polymer mixtures in solution utilizing electrophoretic light scattering apparatus专利检索-激子扩散电子零件及设备专利检索查询-专利查询网

Analysis of polymer mixtures in solution utilizing electrophoretic light scattering apparatus

阅读：644发布：2023-06-19

专利汇可以提供Analysis of polymer mixtures in solution utilizing electrophoretic light scattering apparatus专利检索，专利查询，专利分析的服务。并且An electrophoretic light scattering apparatus for determining the electrophoretic mobility and diffusion coefficient of a macromolecular polymer in solution is disclosed. More particularly, the charged macromolecules are driven through the solution by an electric field developed between two charged electrodes in a modified electrophoretic cell. The electric field is alternately enabled and disabled during the determination to prevent excessive heat build-up in the solution and the resultant convection of macromolecules which would distort the measurements. A laser provides an incident light beam which is passed through the cell perpendicular to the direction of the macromolecule flow so that the autocorrelation function or, alternatively, the frequency spectrum of the light scattered from the macromolecules can be observed at low scattering angles. The scattered light, in addition to having a frequency distribution curve proportional to the diffusion coefficient of the macromolecules, is Doppler shifted by an amount proportional to the electrophoretic mobility of the macromolecule in the scattering region. Because each species of polymers has a unique electrophoretic mobility and hence Doppler shift, the apparatus is useful in quantitatively analyzing a mixture of several different polymers in solution (e.g., life-like enzymes such as blood) to identify the polymers and their relative concentrations.，下面是Analysis of polymer mixtures in solution utilizing electrophoretic light scattering apparatus专利的具体信息内容。

权利要求

2. An electrophoretic light scattering apparatus in accordance with claim 1 including pulse means developing a pulse train for alternately enabling and disabling said electric field during the determination of said electrophoretic mobilities and said diffusion coefficients to reduce heat build-up in the solution thereby preventing convection of said macromolecules.

3. An electrophoretic light scattering apparatus in accordance with claim 2 wherein said detector means includes trigger means for enabling said detector means a predetermined time interval after said electric field is enabled to allow said macromolecules to reach a steady state before said scattered light is analyzed.

4. An electrophoretic light scattering apparatus in accordance with claim 2 wherein said pulse means includes means for alternating the polarity of said pulses, said electric field being periodically reversed responsive to said pulses for preventing the formation of concentration gradients due to accumulation of said macromolecules.

5. An electrophoretic light scattering apparatus in accordance with claim 1 wherein said detector means includes photomultiplier means for detecting and heterodyning said scattered light with said incident light beam to permit frequency analysis of said scattered light at beat frequencies in the audio frequency range.

6. An electrophoretic light scattering apparatus in accordance with claim 1 wherein said detector means includes autocorrelation means and averaging means, said autocorrelation means determining the autocorrelation function of said scattered light during successive intervals comprising data points, said averaging means holding the first data point and multiplying it by each successive data point so that the autocorrelation function is repeatedly calculated and averaged.

7. An electrophoretic light scattering apparatus in accordance with claim 1 wherein said detector means includes spectrum analyzer means and averaging means, said spectrum analyzer means determining the frequency spectrum of said scattered light during successive intervals comprising data points, said averaging means holding the first data point and multiplying it by each successive data point so that the frequency spectrum is repeatedly calculated and averaged.

8. An electrophoretic light scattering apparatus in accordance with claim 1 including electrophoretic cell means comprising a single non-interrupted chamber for holding said solution.

9. An electrophoretic light scattering apparatus in accordance with claim 8 wherein said means for generating said electric field includes a pair of electrodes, said electrodes being positioned at opposite ends of said chamber to establish said electric field across said solution.

10. An electrophoretic light scattering apparatus in accordance with claim 9 wherein said electrophoretic cell means includes light conducting means positioned adjacent to said cell and between said electrodes, said light conducting means conducting said light beam from said laser means to enter said chamber means incident to the direction in which said macromolecules flow.

11. An electrophoretic light scattering apparatus in accordance with claim 10 wherein said light conducting means is positioned normal to the direction in which said macromolecules flow.

12. An electrophoretic light scattering apparatus in accordance with claim 1 wherein said laser means includes an Ar laser emitting an incident light beam on the 5145 Angstrom line.

13. An electrophoretic light scattering apparatus for determining the electrophoretic mobility and diffusion coefficient of a macromolecular polymer in solution, said apparatus comprising in combination: means for establishing an electric field across said solution to move said macromolecules through said solution at a velocity proportional to said electrophoretic mobility in a direction parallel with said electric field; laser means for generating a light beam of monochromatic electromagnetic radiation incident on said macromolecules, said light beam being scattered by said macromolecules to provide a frequency distribution representative of said diffusion coefficient and a Doppler shift proportional to said electrophoretic mobility of said macromolecular polymer; and detector means for analyzing said scattered light to determine said electrophoretic mobility and said diffusion coefficient of said macromolecular polymer in solution.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
一类基于镧系金属与四苯乙烯基团的MOFs制备及应用	2020-05-08	549
一种P型钝化接触电池的制备方法	2020-05-11	789
一种红外激光退火的单晶硅SE-PERC电池的制造方法	2020-05-11	269
一种光控半导体开关	2020-05-08	626
步进电机、钟表用机芯、钟表及步进电机的制造方法	2020-05-08	530
一种原位自修复石墨烯金属基自润滑复合涂层的制备方法	2020-05-11	489
一种基于自抗扰控制方法的质子交换膜燃料电池湿度控制方法	2020-05-11	72
用于疗法的双环杂芳族脲或氨基甲酸酯化合物	2020-05-08	828
一种基于扭转模态超声导波的复合绝缘子脱粘检测方法	2020-05-08	116
真空原子钎焊扩散设备	2020-05-11	676

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

激子扩散热门专利

热门分类

Analysis of polymer mixtures in solution utilizing electrophoretic light scattering apparatus

该功能需要专业版企业版VIP权限，您可以：