|作者：||Ya‐qiong Huang, Jia‐wei Wu, Gang Li, Hong‐bo Li, Da‐wei Wang, James Runt, Jen‐taut Yeh|
1Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education, Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering Hubei University Wuhan China
2 Department of Materials Science and Engineering Penn State University University Park PA U.S.A.
3 Department of Materials Engineering Kun Shan University Tainan Taiwan
|刊名：||Polymers for Advanced Technologies, 2018, Vol.29 (6), pp.1649-1660|
|关键词：||Free volume; Miscibility; Poly(vinyl alcohol); Polyamide 12; Oxygen barrier;|
|原始语种摘要：||Oxygen permeation rates, average volumes of free‐volume‐cavities (Vf), and fractional free volumes (Fv) of polyamide 12 (PA12)/poly(vinyl alcohol) (PVA) (ie, PA12xPVA05y, PA12xPVA08y, and PA12xPVA14y) blend films with varying PVA degrees of polymerization reduced to a minimum value when their PVA contents reached a corresponding optimal value, respectively. The minimum oxygen permeation rates, Vf, and Fv values obtained for the optimal PA12xPVAzy blown films were reduced considerably with decreasing PVA degrees of polymerization. Experimental findings from dynamic mechanical analysis, differential scanning... calorimetry, wide angle X‐ray diffraction, and Fourier transform infrared spectroscopy of the PA12xPVAzy blend series suggest that PA12 and PVA in PA12xPVAzy are miscible to some extent at the molecular level when their PVA contents are near and less than the corresponding critical values. The considerably enhanced oxygen barrier properties of the PA12xPVAzy blend films with optimized compositions are attributed to the significantly reduced local free volume characteristics.|