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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of Membranes of Poly(vinyl ether)s and Their Gas Permeability
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Synthesis of Membranes of Poly(vinyl ether)s and Their Gas Permeability

机译：聚乙烯醚膜的合成及其透气性

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摘要

Cationic polymerizations of various vinyl ethers with cyclic substituents were performed with BF3OEt2. The polymers had relatively high molecular weight (M-n: 18,900-132,000), although the polymerization of phenyl vinyl ether did not proceed. According to differential scanning calorimetry, the obtained poly(vinyl ether)s showed higher glass transition temperatures than room temperature. These poly(vinyl ether)s gave free-standing membranes both by a solution-casting method and by a hot-press method. In the membranes prepared by solution-casting, the oxygen permeability coefficients of these membranes were in the range of 0.81-6.01 barrers, and poly(2-adamanthyl vinyl ether) showed the highest gas permeability among them. Gas permeability of the membranes prepared by hot-press was lower than that of the membranes prepared by solution-casting.
机译：用BF 3 OEt 2进行具有环取代基的各种乙烯基醚的阳离子聚合。该聚合物具有相对较高的分子量（M-n：18,900-132,000），尽管未进行苯基乙烯基醚的聚合。根据差示扫描量热法，获得的聚（乙烯基醚）显示出比室温更高的玻璃化转变温度。这些聚（乙烯基醚）通过溶液浇铸法和热压法均得到独立的膜。在溶液流延制备的膜中，这些膜的透氧系数在0.81-6.01barrers的范围内，并且聚（2-金刚烷基乙烯基醚）显示出最高的透气性。通过热压制备的膜的气体渗透率低于通过溶液流延制备的膜的气体渗透率。

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