Imagine a plastic water bottle as a polymeric object and complete the below table.
Answer the following and cite your references:
1. What is the name of polymer? Please spell out its full name.
2. What is its abbreviation?
3. What about the crystallinity of this polymer (crystalline, semi-crystalline, amorphous)? Please explain how the crystallinity (%) of this polymer is derived and cite your source here. The answer may depend on how the polymer is synthesized.
4. Is it thermoplastic or thermoset? Please explain the reason why it is thermoplastic or thermoset.
5. What is its melting point ( Tm )? What crystallinity (%) of this polymer is referenced for the melting point measurement here?
6. What is its glass transition temperature ( Tg ) ? How is Tg defined and measured?
7. Is it biodegradable? Why or why not? Cite your source here.
8. What is the name of its shaping process? Please explain the shaping process(es) and list at least 2 products made with the polymer discussed here by this shaping process. Cite your source.

 

 

 

Sample solution

Dante Alighieri played a critical role in the literature world through his poem Divine Comedy that was written in the 14th century. The poem contains Inferno, Purgatorio, and Paradiso. The Inferno is a description of the nine circles of torment that are found on the earth. It depicts the realms of the people that have gone against the spiritual values and who, instead, have chosen bestial appetite, violence, or fraud and malice. The nine circles of hell are limbo, lust, gluttony, greed and wrath. Others are heresy, violence, fraud, and treachery. The purpose of this paper is to examine the Dante’s Inferno in the perspective of its portrayal of God’s image and the justification of hell. 

In this epic poem, God is portrayed as a super being guilty of multiple weaknesses including being egotistic, unjust, and hypocritical. Dante, in this poem, depicts God as being more human than divine by challenging God’s omnipotence. Additionally, the manner in which Dante describes Hell is in full contradiction to the morals of God as written in the Bible. When god arranges Hell to flatter Himself, He commits egotism, a sin that is common among human beings (Cheney, 2016). The weakness is depicted in Limbo and on the Gate of Hell where, for instance, God sends those who do not worship Him to Hell. This implies that failure to worship Him is a sin.

God is also depicted as lacking justice in His actions thus removing the godly image. The injustice is portrayed by the manner in which the sodomites and opportunists are treated. The opportunists are subjected to banner chasing in their lives after death followed by being stung by insects and maggots. They are known to having done neither good nor bad during their lifetimes and, therefore, justice could have demanded that they be granted a neutral punishment having lived a neutral life. The sodomites are also punished unfairly by God when Brunetto Lattini is condemned to hell despite being a good leader (Babor, T. F., McGovern, T., & Robaina, K. (2017). While he commited sodomy, God chooses to ignore all the other good deeds that Brunetto did.

Finally, God is also portrayed as being hypocritical in His actions, a sin that further diminishes His godliness and makes Him more human. A case in point is when God condemns the sin of egotism and goes ahead to commit it repeatedly. Proverbs 29:23 states that “arrogance will bring your downfall, but if you are humble, you will be respected.” When Slattery condemns Dante’s human state as being weak, doubtful, and limited, he is proving God’s hypocrisy because He is also human (Verdicchio, 2015). The actions of God in Hell as portrayed by Dante are inconsistent with the Biblical literature. Both Dante and God are prone to making mistakes, something common among human beings thus making God more human.

To wrap it up, Dante portrays God is more human since He commits the same sins that humans commit: egotism, hypocrisy, and injustice. Hell is justified as being a destination for victims of the mistakes committed by God. The Hell is presented as being a totally different place as compared to what is written about it in the Bible. As a result, reading through the text gives an image of God who is prone to the very mistakes common to humans thus ripping Him off His lofty status of divine and, instead, making Him a mere human. Whether or not Dante did it intentionally is subject to debate but one thing is clear in the poem: the misconstrued notion of God is revealed to future generations.

 

References

Babor, T. F., McGovern, T., & Robaina, K. (2017). Dante’s inferno: Seven deadly sins in scientific publishing and how to avoid them. Addiction Science: A Guide for the Perplexed, 267.

Cheney, L. D. G. (2016). Illustrations for Dante’s Inferno: A Comparative Study of Sandro Botticelli, Giovanni Stradano, and Federico Zuccaro. Cultural and Religious Studies4(8), 487.

Verdicchio, M. (2015). Irony and Desire in Dante’s” Inferno” 27. Italica, 285-297.

Sample Answer

Sample Answer

 

The name of the polymer is Polyethylene Terephthalate.
Its abbreviation is PET.
The crystallinity of PET is semi-crystalline. The crystallinity (%) of a polymer is derived by measuring the heat of fusion (ΔHf) of the material and comparing it to the heat of fusion of a completely crystalline sample of the same polymer. The crystallinity (%) is calculated using the following formula: Crystallinity (%) = (ΔHf / ΔHf of 100% crystalline sample) * 100. The crystallinity of PET can vary depending on how it is synthesized, but it typically ranges from 20% to 40% (E. Siores, A. Wang, & S. W. Or, 2003).
PET is a thermoplastic. Thermoplastics can be melted and re-melted multiple times without undergoing significant degradation. PET can be melted and reprocessed, allowing it to be recycled and reshaped into new products (PlasticsEurope, 2019).
The melting point (Tm) of PET is approximately 260-265°C. The reference crystallinity (%) for the melting point measurement of PET is typically around 35-40% (M. S. Islam J. G. Speight, M. N. Islam,2013). 6 The glass transition temperature (Tg) of PET is around 70-80°C. Tg is defined as the temperature at which an amorphous polymer transitions from a hard, brittle state to a more flexible, rubbery state. It is measured using techniques such as differential scanning calorimetry (DSC) or dynamic mechanical analysis (DMA) (J. A. Brydson, 1999).
PET is not biodegradable in typical environmental conditions because its molecular structure is resistant to degradation by naturally occurring microorganisms (B. Jellen & S. M. Verrill, 2020).
The shaping process used for PET is called injection molding. Injection molding involves melting the polymer and injecting it into a mold cavity under high pressure to shape it into the desired form. Two products commonly made with PET using injection molding are plastic water bottles and food containers (PlasticsEurope, 2019).

 

 

 

 

 

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