利用 p VT10 0分析仪测得交联聚乙二醇的 p- V- T数据 ,并应用 Sanchez- Lacombe格子流体理论拟合出其 p VT状态方程。同时计算出了交联聚乙二醇 (PEG)的热膨胀系数 α,等温压缩系数 β和热压系数γ,为其在生物化学方面的生产、加工和应用提供了一定的依据 The p-V-T data of cross-linked polyethylene glycol were measured with a pT1010 analyzer and the pVT equation of state was fitted using the Sanchez-Lacombe lattice fluid theory. At the same time, the thermal expansion coefficient α, isothermal compression coefficient β and thermal compression coefficient γ of cross-linked polyethylene glycol (PEG) were calculated, which provided a basis for its biochemical production, processing and application