Preparation and Barrier Properties of High Barrier Composite PEN/PET Beverage Packaging Bottle
Polyethylene glycol terephthalate(PET)bottle is one of the widely used beverage packaging bottles in the current market,but with the improvement of consumers'requirements for beverage quality,the gas barrier of beverage packaging bottles has higher requirements.To obtain a beverage packaging bottle with a high barrier,this experiment employed the method of melting blending to prepare Polyethylene naphthalate two formic acid glycol ester/Polyethylene glycol terephthalate(PEN/PET)composite material.After determining the best proportion of blending material,the composite Polyethylene naphthalate two formic acid glycol ester/Polyethylene glycol terephthalate(PEN/PET)beverage packaging bottle was prepared by processing,and its barrier properties were analyzed through measuring oxygen,carbon dioxide and water vapor permeance,as well as ultraviolet barrier properties,optical properties,mechanical properties and heat resistance.Through comprehensive analysis and comparison,the optimal ratio of PEN 30%wt and PET 70%wt was determined.Compared with pure PET bottles,the composite PEN/PET beverage packaging bottle had more oxygen,carbon dioxide,and water vapor barrier properties by 3.48 times,7.36 times and 2.25 times,respectively.In addition,its ultraviolet and other barrier properties had also been significantly improved.After 70 days of storage at different temperatures,the composite PEN/PET bottle was significantly better than the pure PET bottle in beverage preservation.Composite PEN/PET beverage packaging bottle improved the problem of weak barrier of pure PET bottle.
NETL
NSTL
万方数据
维普
