引用本文:
于文汇, 姜炳政, 徐纪平. 邻苯二甲酸二辛酯增塑聚氯乙烯膜的富氧分离性能[J]. 应用化学,
1987, 4(1): 62-66.
Citation: Yun wenhui, Jiang Bingzheng, Xu Jiping. OXYGEN-ENRICHMENT PERMRFORMANCE OF POLYVINYL CHLORIDE PLASTICIZED WITH DIOCTYL PHTHALATE[J]. Chinese Journal of Applied Chemistry, 1987, 4(1): 62-66.
Citation: Yun wenhui, Jiang Bingzheng, Xu Jiping. OXYGEN-ENRICHMENT PERMRFORMANCE OF POLYVINYL CHLORIDE PLASTICIZED WITH DIOCTYL PHTHALATE[J]. Chinese Journal of Applied Chemistry, 1987, 4(1): 62-66.
邻苯二甲酸二辛酯增塑聚氯乙烯膜的富氧分离性能
摘要:
本文研究了DOP含量为0-70%(重量)的增塑PVC膜的透氧性能,指出DOP含量为50%左右的PVC膜要比纯PVC膜的气体透过率提高二个数量级,约为1.7×10-9cm3·cm/cm2·s·cmHg,氧氮分离系数为4。DOP含量为20%的PVC膜有较高的氧氮分离系数,约为6.9。
English
OXYGEN-ENRICHMENT PERMRFORMANCE OF POLYVINYL CHLORIDE PLASTICIZED WITH DIOCTYL PHTHALATE
Abstract:
We have studied the effect of the plasticizer dioctyl phthalate (DOP) on oxygen-enrichment performance of polyvinyl chloride(PVC). The permeability of oxygen of poly-vinyl chloride increases pronouncedly with the content of DOP and approaches to an asymptotic value 2×10-9cm3(STP)·cm/cm·s·cm Hg,two orders higher than that of PVC without plasticizers. The separatied factor αO2/N2 decreases with the increase of the content of DOP but higher than or equals to that of PVC itself. The higher the content of DOP, the lower the glass transition temperature and hence the greater the fractional free volume of PVC.The significant effect of DOP on the permeability of oxygen could be, therefore, quite satisfactorily explained with the free volume theory of diffusion in polymers.
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