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huggins parameter
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  huggins参数
     The Huggins parameter of LDPE/boiling benzene system was also determined as 0.30.
     而 LDPE/沸腾苯体系的 Huggins参数为 0 .3 0。
短句来源
     For the separation of methanol/MTBE, the casting solvent mixtures were investigated in detail, it was found that the positive relationships between Huggins parameter (kH) and permeation flux (J) were due to the casting solvent mixtures. Thus, the separation performance could be improved by adjusting the casting solvent mixtures.
     对于MeOH/MTBE体系的分离,本文在已有的研究基础上,考察了铸膜混合溶剂对膜分离性能的影响,发现第二溶剂的添加使膜的渗透通量J有所提高,并且J的增加值与铸膜稀溶液的Huggins参数KH成正相关。
短句来源
     The Huggins parameter X_1 is 0.430. The composition of θ solvent of PPES was also determined. It is DMF/C_2H_5OH = 81.5/18.5 (in volume).
     得到了第二维利系数A_2与重均分子量的关系为A_2=0.0375 M~(-0.36),还测定了PPESDMF体系的Huggins参数X_1。
短句来源
     The self made capillary dynamic rheometer was employed to dynamically extrude PP/EPDM blends. The samples extruded were tested by differential scanning calorimeter (DSC), and Huggins parameter was used to characterize the status of interface.
     使用自行设计的恒速型毛细管动态流变仪进行PP/EPDM共混物的动态挤出 ,通过DSC测试共混物的熔点 ,运用Huggins参数对界面状况进行表征。
短句来源
  相似匹配句对
     and b was empirical parameter.
     b为经验常数。
短句来源
     estimation of its parameter;
     评定运动模糊的参数;
短句来源
     VISCOSITY PROPERTIES OF MIXTURES OF POLYMER SOLUTION AND MICROEMULSION:THE HUGGINS INTERACTION PARAMETER
     高分子溶液与微乳液的混合粘度──Huggins参数
短句来源
     The experimental Flory-Huggins interaction parameter was correlated by the revised Freed model.
     用修正Freed模型进行关联,取得了良好效果。
短句来源
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  huggins parameter
A fall in affinity in the cellulose aminoacetate-water system is due to the contribution of entropy effects, leading to an increase in the Flory-Huggins parameter.
      
If the equation of state is "fitted" with an effective Flory-Huggins parameterχeff, the latter turns out to be strongly dependent on both concentration and temperature.
      
The entropic and enthalpic terms of the Flory-Huggins parameter as determined from the experiment are in excellent agreement with lattice cluster theory calculations.
      
The temperature and concentration dependences of the Flory-Huggins parameter for polymer-solvent interaction Z1 and the mechanism of the structural rearrangement in the systems were determined.
      
The Flory-Huggins parameter between PS and PVP segments was fixed at a value of 0.11, and periodic boundary conditions were employed.
      


Activity coefficients of toluene and n-decane at infinite dilution in polystyrene solutions at 130°-200℃ are determined by GC method. For both systems at 130°-201℃, the relation between γ(0) and Z is: In γ(0) = a ln Z + c, where a≈-1. For φCH3-PSt system at 170°-201℃, we get: 1+x = 4.857/Z +0.7560, where x is the Flory-Huggins Parameter. The result shows that these two systems are nearly athermol solutions.

用气相色谱法测定了130°—200℃之间甲苯和正癸烷在四个分子量不同的聚苯乙烯样品的溶液中无限稀时的活度系数和Flory-Huggins相互作用参量。对于φCH_3-PSt系统,得到: In Υ(O)= -1.0505lnZ+1.1031,(130—201℃)对于nC_10~0-PSt系统,得到: ln Υ(O)= -0.9761lnZ+1.9631,(130—201℃)表明两系统均接近于无热溶液。对于170—201℃的φCH_3-PSt系统,得到: 1+X=4.857Z~(-1)+0.7560据此对气相色谱法测定高聚物分子量的可能性进行了讨论。

By Viscometry and small angle laser light scattering, the parameters of chainflexibility and MHS equation at 25℃ of poly (phenylene ether sulphone) in dimethyformamide has been measured. It is (r_0~2/M)~1/2= 0.0864nm, C_∞ = 2.5, [η]=0.0499 M~(0.63). The molecular weight dependence of second virial coeffecient is A_2= 0.0375M~(-0.36). The Huggins parameter X_1 is 0.430. The composition of θ solvent of PPES was also determined. It is DMF/C_2H_5OH = 81.5/18.5 (in volume).

本文用粘度和小角光散射法确定了聚苯醚砜(PPES)25℃时θ溶剂的组成(DMF与C_2H_5OH的体积比为81.5:18.5)。表征了PPES链的柔性参数A=(r_0~2/M)~(12)=0.0864 nm,C_∞=r_0~2/nl~2=2.5。订定PPES在DMF中25℃的MHS方程为[η]=0.0499 M~(0.63),与Allen的结果不同。得到了第二维利系数A_2与重均分子量的关系为A_2=0.0375 M~(-0.36),还测定了PPESDMF体系的Huggins参数X_1。

The interaction enthalpies and Flory-Huggins parameters wre determined for a scries of probes with different properties in PEO, PVAc, KH-560, ND-43, PMA, and three kinds of acrylatc-4-vinylpyridine copolymer systems by inverse gas chromatography (IGC). The Drago s E, C parameters of PEO, ND-43, and the copolymers were also determined by IGC. The results show that the acid-base interaction has a considerable influence on the intermolecular interaction in the condensed state and the adhesive property...

The interaction enthalpies and Flory-Huggins parameters wre determined for a scries of probes with different properties in PEO, PVAc, KH-560, ND-43, PMA, and three kinds of acrylatc-4-vinylpyridine copolymer systems by inverse gas chromatography (IGC). The Drago s E, C parameters of PEO, ND-43, and the copolymers were also determined by IGC. The results show that the acid-base interaction has a considerable influence on the intermolecular interaction in the condensed state and the adhesive property between polymers and fillers. The solubility of polymers is also influenced by the acid-base property of polymers and the acid-base interaction. In this work, We have devised a convenient method for characterizing the acid-base properly of polymers and the acid-base interaction of polymer systems

本工作利用反气相色谱技术,研究了一系列不同性质的探针分子与PEO,PVAc,CPE,PMA等均聚物,几种丙烯酸甲酯-4-乙烯基吡啶共聚物,以及南大-43,KH-560等偶联剂的相互作用.结果表明,酸碱作用对凝集态中相异分子间的相互作用有显著贡献,本工作建立了一个较为简便的测算聚合物和偶联剂的Drago参数,定量表征聚合物和偶联剂的酸碱性质的方法.

 
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