source : virginia.edu

## Computational Materials Group

Computational Materials Group party, January 30th, 2021

More group photos: 2019, 2019, 2018, 2016, 2015, 2013, 2011, 2010, 2007, 2006, 2005, 2002

Group Meetings

Wilsdorf hall, Room 109A (now on zoom)

Friday, 3:30 – 5:00 pm

April 9: Mikhail

April 16: Hao

April 23: general discussion (4:30pm)

April 30: Chaobo

May 7: Yuan

May 14: Libby

May 21: Antonis

PDF (a) Compute the repeat unit molecular weight of – 14.5 Below, molecular weight data for a polypropylene material are tabulated. Compute (a) the number-average molecular weight, (b) the weight-average molecular weight, and (c) the degree of polymerization. Molecular Weight Range (g/mol) x i w i 8,000-16,000 0.05 0.02 16,000-24,000 0.16 0.10 24,000-32,000 0.24 0.20properties, list four. [8 points] 2. Give three properties of (macro)molecules that are influenced by the (macro)molecular size (i.e., the degree of polymerization and molecular weight), and describe briefly how the property changes with size. [12 points] Property Effect, as size increases 2-o ^ JThe following table lists molecular weight data for a polypropylene material, please calculate (1) number average molecular weight; (2) weight average molecular weight and (3) number average degree of polymerization.

PDF Name: .[printed] – Molecular weight data for some polymer are tabulated here. Compute (a) The number-average molecular weight, and (b) The weight-average molecular weight. (c) If it is known that this material\'s degree of polymerization is 710, which one of the polymers listed in Table 14.3 is this polymer?… View AnswerThe following table lists molecular weight data for a polypropylene material. Compute, (a) the number-average molecular weight (b) the weight-average molecular weight (c) the degree of polymerization.given molecular weight data and a degree of polymerization of 530. The appropriate data are given below along with a computation of the number-average molecular weight. Molecular wt. Range Mean M i x i x i M i 8,000-20,000 14,000 0.05 700 20,000-32,000 26,000 0.15 3900 32,000-44,000 38,000 0.21 7980 44,000-56,000 50,000 0.28 14,000

Homework 8- Chapter 14 and Chapter 15.docx – Khoa Tran ME – The following table lists molecular weight data for a polypropylene material. Compute (a) the number-average molecular weight, (b) the weight-average molecular weight, and (c) the degree of polymerization. please show equations and calculations…4. The following table lists molecular weight data for a polystyrene (PS) material. Compute (a) the number-average molecular weight, (b) the weight-average molecular weight, (c) the unit molecular weight and (d) the degree of polymerization..Chemical Engineering Q&A Library.Table below lists molecular weight data for a polypropylene material. H CH, H H In polypropylene Calculate: (a) The number-average molecular weight (Mn) (b) The weight-average molecular weight (Mw) (c) The degree of polymerization (DP) Molecular Weight Range (g/mol) 0-5000 0.02 0.01 5000-10000 0.10 0.04 10000-15000 0.21 0.16 15000-20000 0.13 0.17 20000-25000 0