摘要
用反相色谱法(IGLC)测定聚合物和溶剂的相互作用参数X,推算出Flory聚合物溶液理论中的交换能参数X_(12),结合本文估算的聚合物和溶剂的接触表面之比S_1/S_2,计算了聚二甲基硅氧烷(PDMS)、天然橡胶(NR)、聚苯乙烯(PS)和聚异丁烯(PIB)等溶液体系中,X和聚合物链节分率φ_2的关系,结果能与实验值很好符合,并且还计算了溶液的体积变化V^(?)/V^(?)和无限稀混合焓△H_(?)~∞.
The exchange energy parameter Xu of Flory new polymer solution theory could be evaluated from thermodynamic interaction parameter X which was determined by inverse gas-liquid chromatography. By using this value of X12 together with S1/S2, the ratio of contact surface area per unit characteristic volume (hard core volume) for polymer and solvent, the interaction parameters X, for polydimethylsiloxane, polyisobutylene, natural rubber and polystyrene with solvents were calculated, and plotted as X vs.2, the segment fraction of polymer. The values of X thus calculated were in good agreement with the experimental values. Moreover, the volume change in mixing VE/V0 and enthalpy of mixing corrected to infinitely dilute solution oi polymer ΔHM∞ were calculated with these parameters, and agreed with the observed values.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1991年第1期87-95,共9页
CIESC Journal
