Preparation of biaxially oriented polyamide 6/polyketone/graphene oxide films with enhanced barrier and mechanical behaviors

Abstract

In this study, biaxially oriented polyamide 6/polyketone/graphene oxide (PA6/PK/GO) films were prepared by melt blending then simultaneously biaxially stretched process, with the aim of obtaining high barrier properties films and improvements in their mechanical properties. The oxygen transmission rate of biaxially oriented PA6/PK/GO film significantly decreased with addition of polyketone and GO. It is surprising that the biaxially oriented process can excellently improve the barrier properties of biaxially oriented PA6/PK/ GO film. For example, there was 94.7% OTR reduction of the film containing 20 wt% PK and 0.08 wt% GO compared with PA6 film at a stretching ratio of

Structural evolution and properties of polyamide‐6/poly(ether block amide) films during the simultaneous biaxial stretching

“…It can be seen that the crystallinity ( X c ) of the films increased from 23.1% to 28.7% as the stretching ratios increased from 1 × 1 to 3.5 × 3.5, showing a 24.2% increment. A similar behavior was observed by Lin et al in the study of the biaxially oriented PA6/polyketone/graphene oxide films 15 . This finding is believed to be benefited for the improvement of oxygen barrier properties of the films.…”

“…A similar behavior was observed by Lin et al in the study of the biaxially oriented PA6/polyketone/graphene oxide films. 15 This finding is believed to be benefited for the improvement of oxygen barrier properties of the films.…”

“…Over the past few decades, several papers dealing with the BOPA films have been reported. [11][12][13][14][15][16][17] Kanai et al 16 investigated the differences in the properties of the biaxially oriented PA6 film prepared by three stretching methods. Lin et al 17 evaluated the linear tearing properties (LTP) of BOPA films prepared by blending PA6 with poly(m-xylene adipamide) (MXD6) based on the simultaneous biaxial stretching method, and they found that the BOPA films containing 25 wt% MXD6 showed the best LTP.…”

“…During the biaxial stretching process, the cast polyamide ‐ 6 (PA6) sheet is drawn above the glass transition temperature (T g ) but still below the melting point (T m ) in the machine direction (MD) and transition direction (TD), which can lead to the change of microstructure and crystallographic orientation of the films in each drawing direction, and thus affects physical properties of the films. Over the past few decades, several papers dealing with the BOPA films have been reported 11–17 . Kanai et al 16 investigated the differences in the properties of the biaxially oriented PA6 film prepared by three stretching methods.…”

Structure evolution and properties enhancement of polyamide‐6/polyamide‐1010 films under uniaxial and biaxial stretching

“…However, few works dealing with this topic have been reported in the literature. [1][2][3][4] As far as we know, soft-packaged lithium-ion battery (s-LIB) is widely used in new energy vehicle power battery, and the battery for portable electronic products such as mobile phone, notebook computer, and other application. Currently, the packaging material for the s-LIB is aluminum-plastic film, 5 usually consisting of BOPA/aluminum foil (Al)/cast polypropylene film (CPP).…”