A systematic study on the effects of types and contents of compatibilizer precursors (CPs) on degrees of crystallinity (W c ), melt shear viscosities ( h s ), and permeation barrier properties of modified polyamides (MPAs) and on their corresponding morphology and barrier properties of bottles blow-
Permeation barrier properties of polyethylene/modified blends of polyamide and polyvinylalcohol containers against methanol/gasoline fuels
β Scribed by Jen-Taut Yeh; Wern-Shiarng Jou; Yu-Sheng Su
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 298 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
β¦ Synopsis
One commercial grade of polyamide and/or polyvinylalcohol resins were modified by a compatibilizer precursor to make various compositions of modified polyamide (MPA) and/or modified blends of polyamide/polyvinylalcohol (MPAPVA) through reactive extrusion. Good methanol/gasoline fuel permeation resistance together with clearly defined MPAPVA and MPA laminar structures were found on containers blowmolded from the blends of polyethylene PE/MPAPVA and PE/MPA, respectively. The compositions of MPAPVA and MPA resins were found to exhibit a significant influence on the methanol/gasoline fuel permeation resistance and morphology of PE/MPAPVA and PE/MPA containers, respectively. Possible mechanisms are proposed to explain these interesting phenomena.
π SIMILAR VOLUMES
A systematic investigation of the effects of melt indices of polyamides (PAs) on the morphology, barrier, and impact properties of blow-molded polyethylene-polyamide and polyethylene-modified polyamide (PE-MPA) containers is reported. An appropriate alkyl carboxyl-substituted polyolefin was chosen a
Different modified polyamide (MPA) and modified polyethylene (MPE) resins were prepared by reactive extrusion of different contents of a compatibilizer precursor (CP) with either polyamide (PA) or polyethylene (PE). The MPE and MPA resins were then blow-molded with designed amounts of PA or PE resin