Fibre Science

First Class Test, Model Answers

It is difficult to make so called conceptual papers because minor discrepancies with words can lead to misunderstandings. I’ve been analyzing answers and reviewing my paper in light of which I have redefined some of the answers in the paper.

Question 1.iii. Some candidates have misunderstood that they were just required to show lateral forces between 2 chains of Nylon 6.6. in this question and have involved water molecules in their answer. Although it was stated in the question that they were just required to use the particular type of bond they had specified in the first section of this question it could have been misunderstood to draw that the water molecule was required. Candidates who have correctly shown the interaction with the involvement of a water molecule will be given full credit for their answers.

Question 2.iv. The first choice, stating that the fibre would be too stiff to be used as a textile fibre is not true because the fibre can indeed be used as a composite or, with the scope of textiles expanding into a variety of technical uses, come into use to achieve never before possible architectural feats. Do you know that the curved wall of the Burj-al-Arab is made of fabric?

Comments are still welcome!