聚合物分子量 meaning in English
polymer molecular weight
Examples
- Standard test method for determination of weight - average molecular weight of polymers by light scattering
用低扩散法测定聚合物分子量和平均分子量的标准试验方法 - The gpc results indicated that the polymerization degree increased with the extension of reaction tine and the molecular weight distribution was tend to be monodispersity
Gpc研究结果表明随反应时间延长，聚合度增大，聚合物分子量趋于增大但分散性减小。 - The following significantly inhibit drug diffusion : large particle size , higher polymer concentration and polymer molecular weight , and reducing the drug solubility in the aqueous phase by adjusting the ph
以下因素可显著抑制药物扩散：大粒径，较高的聚合物浓度和较大的聚合物分子量，及通过调节ph值减少药物在水相中的溶解度。 - The control algorithms of reaction temperature , reaction pressure , molecule weight and reaction gas composition are discussed . the application of neural network and fuzzy control is stressed
主要讨论了反应温度、反应压力、气体组分、聚合物分子量主要控制参数的控制策略，探索了神经网络、模糊控制等智能控制方法在烯烃合金共聚反应的应用。 - Aim : to analyze the mechanism , thermadynamic theoretical basis , dynamic mechanism and influencing factors of thermally induced phase separation ( tips ) in order to completely grasp the factors affecting the size , distribution and form of pores , so that the adjusted range of pore can be widened and the preparation of porous membrane can be repeated and controlled . methods : considering from the structural characteristics of tissue engineered materials , the methods of preparing porous membrane using tips technique , the hermadynamic theoretical basis , dynamic mechanism and influencing factors were analyzed , the problems and investigative directions in the future were also analyzed . tips technique is a process of phase separation of polymer homogenous solution under quenching , and it is suitable for diameter and structural form of the micropore materials prepared using tips are closely correlated with the kind and dispensing proportion of polymer attrnuant , polymer concentration and polymer molecular mass , etc . conducted , including determination of polymer - solvent system phase diagram , study of form and appearance of porous membrane of different thickness , study of form and appearance of porous membrane prepared with systems of different x , which is the parameter of polymer - solvent interaction
目的:分析热致相分离成膜过程的机理、热力学理论基础、动力学机制以及影响因素,以便充分掌握影响孔度大小、分布、形态的因素,使孔度调控范围得以拓宽,使多孔膜的制备能重复可控.方法:从组织工程材料结构特点出发,分析热致相分离聚合物多孔膜的制备方法及该法成膜的热力学理论基础、动力学机制以及影响因素.并分析实验中存在的问题及今后的研究方向.结果:以热致相分离法可制备聚合物多孔膜.热致相分离法制备多孔膜是高聚物均相溶液在淬冷条件下发生相分离的过程,它适用于上临界共溶温度型聚合物一稀释剂二元体系.热致相分离法成膜的过程,可以认为是旋节线机理占主导地位.热致相分离法制备的微孔材料,其孔隙率、孔径大小、结构形态与聚合物稀释剂的种类、组成配比、聚合物浓度、聚合物分子量等因素密切相关.结论:可采用热致相分离技术制备多孔膜,通过改变不同的成膜条件可获得一系列不同孔径尺寸和孔径分布的多孔膜材料.对热致相分离成膜过程中聚合物-溶剂体系的相图测定,不同厚度的多孔膜形貌研究,不同x (聚合物-溶剂相互作用参数)体系所制备的多孔膜形貌等需深人研究