SUSTAINABILITY IN FOOD TECHNOLOGY
SUSTAINABLE FOOD PACKAGING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Among all the food packaging polymers listed below, which has the highest gas barrier property?
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Low density polyethylene(LDPE)
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High density polyethylene(HDPE)
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Polypropylene(PP)
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Ethylene vinyl alcohol(EVOH)
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Linear low-density polyethylene(LLDPE)
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Explanation:
Detailed explanation-1: -Properties. Ethylene-vinyl alcohol copolymer or EVOH is a flexible, crystal clear, and glossy thermoplastic copolymer with excellent flex-crack resistance, and very high resistance to hydrocarbons, oils and organic solvents.
Detailed explanation-2: -The EVA blend deforms homogeneously whereas EVOH forms a neck at an extension rate of 10, 000%/min. It is shown that the true stress-strain relationship of the components in the plastic region can be described with two parameters, the true yield stress and the strain hardening parameter.
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