MONOMER REACTIVITY RATIO MEASUREMENT OF PERFLUOROMETHYL VINYL ETHER WITH SOME VINYL MONOMERS CONTAINING FLUORINE IN EMULSION COPOLYMERIZATION

YUAN Caigen; HU Chunpu; XU Xudong; ZHANG Qinlai; HU Qinghua

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MONOMER REACTIVITY RATIO MEASUREMENT OF PERFLUOROMETHYL VINYL ETHER WITH SOME VINYL MONOMERS CONTAINING FLUORINE IN EMULSION COPOLYMERIZATION

Research Article | 更新时间：2021-03-19

- MONOMER REACTIVITY RATIO MEASUREMENT OF PERFLUOROMETHYL VINYL ETHER WITH SOME VINYL MONOMERS CONTAINING FLUORINE IN EMULSION COPOLYMERIZATION
- Acta Polymerica Sinica Issue 3, Pages: 316-319(2001)
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- Published：20 June 2001，
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YUAN Caigen, HU Chunpu, XU Xudong, ZHANG Qinlai, HU Qinghua. MONOMER REACTIVITY RATIO MEASUREMENT OF PERFLUOROMETHYL VINYL ETHER WITH SOME VINYL MONOMERS CONTAINING FLUORINE IN EMULSION COPOLYMERIZATION. [J]. Acta Polymerica Sinica (3):316-319(2001)
DOI：

YUAN Caigen, HU Chunpu, XU Xudong, ZHANG Qinlai, HU Qinghua. MONOMER REACTIVITY RATIO MEASUREMENT OF PERFLUOROMETHYL VINYL ETHER WITH SOME VINYL MONOMERS CONTAINING FLUORINE IN EMULSION COPOLYMERIZATION. [J]. Acta Polymerica Sinica (3):316-319(2001) DOI：

摘要

分别通过气相色谱法测定了全氟甲基乙烯基醚 (PMVE)与偏氟乙烯 (VDF)以及PMVE与四氟乙烯(TFE)二元乳液共聚反应中的气相单体组成和共聚物组成

然后用非线性回归法 (RREVM )计算得TFE PMVE及VDF PMVE乳液共聚合反应的表观竞聚率分别为γTFE=3.89和γPMVE=0.05以及γVDF=1.06和γPMVE=0.11.结合已经测定的TFE/VDF二元乳液共聚的表观竞聚率

计算了由VDF/TFE/PMVE三元乳液共聚合反应合成的共聚物组成

后者与由19F-NMR实测的共聚物组成吻合.

Abstract

The monomer reactivity ratios of emulsion copolymerization for some fluorine containing gaseous monomers

i．e．perfluoromethyl vinyl ether (PMVE) with TFE and PMVE with vinylidene fluoride (VDF) weremeasured and studied．At relatively low pressure

the copolymer composition equation could be kept in the same way as Mayo-Lewis equation after replacing the monomer concentration with gaseous mole fraction

and the monomer reactivity ratios with apparent monomer reactivity ratios．The initial and the end monomer mole fractions existing in the copolymerization systems were determined with gas chromatography (GC) and the copolymer compositions were calculated from the GC experimental data．The apparent monomer reactivity ratios estimated from reactivity ratio error-in variables model (RREVM) were γTFE=3.89

γPMVE=0.05 and γVDF=1.06

γPMVE=0.11 for these two copolymerization systems respectively．The composition of ternary copolymer composed of TFE／VDF／PMVE made from emulsion copolymerization was calculated according to the ternary copolymer composition equation with these apparent monomer reactivity ratios measured．It was found that the composition of such a ternary copolymer was in good agreement with that measured by means of 19F-NMR．

关键词

乳液共聚表观竞聚率偏氟乙烯四氟乙烯全氟甲基乙烯基醚

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