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摘要
采用离子液体1-烯丙基-3-甲基咪唑四氟硼酸盐(AmimBF4)对乙基纤维素(EC)进行复合改性,将混合后的铸膜液,在室温下成膜,采用红外光谱、扫描电子显微镜、差压式气体透过仪对共混膜进行测试。研究结果表明,制得的共混膜柔韧性增强,强度高,气体分离性能有很大提高,与纯EC膜相比,二氧化碳(CO2)的透过系数达到102.6Barrer,提高了2.5倍,分离系数平均值为41,提高了1倍多。
Abstract
Ethyl cellulose (EC) was modified and compounded by ionic liquid 1-allyl-3-methylimidazolium tetrafluoroborate (AmimBF4),and the mixed casting solution was formed at room temperature.The blend film was tested by infrared spectroscopy,scanning electron microscopy and differential pressure gas permeation.The results showed that the flexibility of film was enhanced,the strength was high and the gas separation performance was also improved a lot.Compared with the pure EC membrane,the permeability coefficient for carbon dioxide (CO2) reached 102.6 Barrer,which was 2.5 times higher than the pure.The average separation factor was 41,which was more than doubled.
关键词
离子液体
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透过系数
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分离性
Key words
ionic liquid
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permeability coefficient
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separability
乙基纤维素与离子液体共混膜制备及气体分离性能研究[J].
化工新型材料, 2019, 47(1): 105-107 DOI:
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基金资助
国家自然科学基金(U1162123,51103076);黑龙江省省属高等学校基本科研业务费科研项目(植物性食品加工技术特色学科专项YSTSXK201862);黑龙江省自然科学基金项目(LC2011C12,ZD201101);黑龙江省教育厅海外学人科研资助项目(1251H012);黑龙江省高校新世纪优秀人才项目(1253-NCET24)
