Question: The polymer polylactic acid (see structure (2)) was used for a while to replace polyethylene terephthalate (PETE) in the bags containing certain kinds of snack

The polymer polylactic acid (see structure (2)) was used for a while to replace polyethylene terephthalate (PETE) in the bags containing certain kinds of snack foods. However, polylactic acid is stiffer than PETE and so the bags made loud crackling sounds when they were handled. The problem was solved by using a special adhesive between the layers of the bags. Compare the structures of polylactic acid and PETE and suggest a reason why polylactic acid chains are more rigid than those of PETE.

Step by Step Solution

★★★★★

3.32 Rating (164 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The smaller polylactic ac... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Chemical Principles Questions!

NB: YOU ARE ONLY REQUIRED TO DO THE DOUBLE ENTRY WHICH IS THE "T" ACCOUNTS Romeo Shakespeare is a retailer of love potions, which he sells in the Papen Market in St Thomas. 2020 February 1 Romeo...

Planning is one of the most important management functions in any business. A front office managers first step in planning should involve determine the departments goals. Planning also includes...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

According to the company website, Fine Works Pavers, located in Green Valley, California, is a leading landscape and masonry supplier. The company supplies items such as concrete paving stones for...

What is the tacticity classification for this polymer ( polylactic acid, PLA ) : Draw the structure for the other possible tacticities ( i . e . , if you picked syndiotactic, draw isotactic and...

PLS HELP ASAP, TY Polymer dissolution in solvents is an important area in polymer chemistry because of its many applications in industry such as paint, membrane, plastics recycling, and drug...

Question 3(25pts) : A graft copolymer was synthesized using a polyisoprene backbone with Mn =30kg/mol by grafting poly(lactic acid) polymer chains with an average degree of polymerization of 250 to...

3. a) Sketch the graph of specific volume versus temperature for ideal crystalline, semi -crystalline and amorphous polymers b) Label the phases and show Tm and Tg on the graph. c) Consider the below...

Polymers are backbone of modern civilisation. We are using polymers in our daily life to lot of extent. Automobile tyres are made up of Buna-S. Nylon is being extensively used for making socks and...

1. Pure iron has a relatively low yield strength, but high ductility. That strength increases as it is alloyed with carbon to make steel, but ductility is reduced (see chart below.) Why is this the...

A polymerization of lactic acid was carried out at 60C. The COOH] was determined for each sample by titrating with ethanolic sodium hydroxide. Based on the structure of lactic acid and data in Table...

A sample of lead ore contains 78.0% galena, PbS. How many metric tons of Pb can be obtained from 1.00 metric ton of the lead ore?

Which multiple could be used for a basic business valuation? Select an answer: sales/total assets Debt/EBITDA net income/revenue EV/EBITDA

Hedging biotech company is \ ( 9 \ % \ ) . However, the firm's financial manager is concerned that interest rates will climb even higher in coming months. The following data are available: \ % How...

What are some key issues to consider in establishing and monitoring an employee assistance program? AppendixLO1

The conversion of triglycerides into biodiesel can be achieved in the presence of either catalytic acid or catalytic base. We have seen a mechanism for transesterification with catalytic acid. In...

A lecithin was hydrolyzed to yield two equivalents of myristic acid. (a) Draw the structure of the lecithin. (b) This compound is chiral, but only one enantiomer predominates in nature. Draw the...

A cephalin was hydrolyzed to yield one equivalent of palmitic acid and one equivalent of oleic acid. (a) Draw two possible structures of the cephalin. (b) If the phosphodiester was located at C2 of...

Land Transactions on the Statement of Cash Flows Simkin Corporation purchased land for $420,000. Later in the year, the company sold a different piece of land with a book value of $155,000 for...

Wilderness Products, Inc., has designed a self-inflating sleeping pad for use by backpackers and campers. The following information is available about the new product: a. An investment of $1,500,000...

Bank leverage Use the information given in Great Lakes National Bank's balance sheet to answer the following questions. Bank's Balance Sheet Assets Liabilities and Owners' Equity Reserves $150...