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首页> 外文期刊>American journal of applied sciences >Determination of Scattering Parameters of a New Copolymer by Using a Laser Scattering Method
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Determination of Scattering Parameters of a New Copolymer by Using a Laser Scattering Method

机译：激光散射法测定新型共聚物的散射参数

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Problem statement: In present work a poly (4 vinylphenol-co-2 hydroxethyl methacrylate) polymer, (PVPh-HEM), was selected, as a new copolymer, to study the phenomena of Optical Laser Light Scattering (OLLS). Approach: A poly (4 vinylphenol-co-2 hydroxethyl methacrylate) was investigated for its importance in the highly industrial applications in different branches. This polymer was solved in two different solvents like as Methanol and Dimethylformamide, DMF, with different concentrations 0.2, 0.4, 0.6, 0.8, 1.0×10-3 g mL~(-1). OLLS data were obtained by using a self- built of laser scattering system. Results: The angular behavior of that selected polymer solution with different concentrations were studied by plotting the intensity of the scattered light against the scattering angle. The value of kc/R(θ) ratio was plotted as a function of θ through the value sin~2(θ/2)+100C, showing what was called Zimm plot. Conclusion/Recommendations: From that plot the different scattering parameters such as Pap's molecular weight Mw, Second virial coefficient A~2, Radius of gyration RG and molecular radius D of that polymer were determined in that two different selected solvents.
机译：问题陈述：在目前的工作中，选择了一种聚（4-乙烯基苯酚-co-2甲基丙烯酸羟乙基酯）聚合物（PVPh-HEM）作为一种新共聚物，以研究光学激光散射（OLLS）现象。方法：研究了聚（4-乙烯基苯酚-co-2甲基丙烯酸羟乙酯）在不同分支的高度工业应用中的重要性。将该聚合物溶解在甲醇，二甲基甲酰胺，DMF等两种不同的溶剂中，其浓度分别为0.2、0.4、0.6、0.8、1.0×10-3 g mL（-1）。 OLLS数据是通过使用自建的激光散射系统获得的。结果：通过绘制散射光的强度与散射角的关系图，研究了所选浓度不同的聚合物溶液的角行为。通过值sin〜2（θ/ 2）+ 100C将kc / R（θ）比的值绘制为θ的函数，从而显示了所谓的Zimm图。结论/建议：根据该图，在两种不同的选择溶剂中，确定了不同的散射参数，例如Pap的分子量Mw，第二维里系数A〜2，回转半径RG和分子半径D。

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