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化学学报
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化学学报 ›› 1961, Vol. 27 ›› Issue (3): 214-218. 上一篇    

论文

聚甲基丙烯酸甲酯混合溶剂体系 Ⅳ. 交联聚合物在混合溶剂中的溶胀

程镕时1, 秦汶1, 钱人元2   

  1. 1. 中国科学院应用化学研究所;
    2. 中国科学院化学研究所
  • 投稿日期:1960-08-04 发布日期:2013-06-03

POLYMETHYLMETHACRYLATE IN MIXED SOLVENTS Ⅳ. EQUILIBRIUM SWELLING OF A SLIGHTLY CROSSLINKED POLYMER IN MIXED SOLVENTS

CHENG YUNG-SHIH1, CHING WEN1, CHIEN JEN-YUAN2   

  1. 1. Institute of Applied Chemistry, Academia Sinicu;
    2. Institute of Chemistry, Academia Sinica
  • Received:1960-08-04 Published:2013-06-03

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被引次数

2

一微有交联的聚甲基丙烯酸甲酯试样在甲苯-乙醇和丙酮-水混合溶剂中的平衡溶胀比用容量法作直接测量, 当非溶剂的体积分数分别为γ=0.17(乙醇)和0.02(水)时, 平衡溶胀比均出现极大, 与在稀溶液中的粘度和渗透压行为完全一致.在θ溶剂中的平衡溶胀比Qθ是与溶剂-非溶剂对无关的常数, 因而溶胀数据可以用一维溶胀因子X溶胀=(Q/Qθ)1/3表示.从实验结果得到聚甲基丙烯酸甲酯的溶度参数δ=10.0.

The equilibrium swelling ratios of a slightly crosslinked polymethylmethacrylate sample in toluene-ethanol and acetone-water solvent-non-solvent mixtures have been determined volumitrically, The values of swelling ratio Q go through a maximum at the volume fraction of the non-solvent, γ=0.1%(ethanol) and 0.02(water) for the two systems respectively, in parallel with the viscornetric and osmometric behavior observed in dilute solutions.