Supporting data for Consequences of Grafting Density on the Linear Viscoelastic Behavior of Graft Polymers

Loading...

Persistent link to this item

https://doi.org/10.13020/D6T97M
https://hdl.handle.net/11299/193252

Statistics

View Statistics

Keywords

Graft polymer

grafting density

bottlebrush

rheology

entanglements

Collection period

2017-02-06
2017-05-15

Date completed

2018-02-06

Date updated

Time period coverage

Geographic coverage

Source information

Journal Title

Journal ISSN

Volume Title

Title

Supporting data for Consequences of Grafting Density on the Linear Viscoelastic Behavior of Graft Polymers

Published Date

2018-02-06

Authors

Haugan, Ingrid N

Maher, Michael J

Chang, Alice B

Lin, Tzu-Pin

Grubbs, Robert H

Hillmyer, Marc A

Bates, Frank S

Group

Author Contact

Bates, Frank S
bates001@umn.edu

Type

Dataset
Experimental Data

Abstract

These files contain data along with associated output from instrumentation supporting all results reported in Haugan et. al. "Consequences of Grafting Density on the Linear Viscoelastic Behavior of Graft Polymers." In Haugan et. al. we found: The linear viscoelastic behavior of poly(norbornene)-graft-poly(±-lactide) was investigated as a function of grafting density and overall molar mass. Eight sets of polymers with grafting densities ranging from 0–100% were synthesized by living ring-opening metathesis copolymerization. Within each set, the graft chain molar mass and spacing between grafts were fixed while the total backbone length was varied. Dynamic master curves reveal that these polymers display Rouse and reptation dynamics with a sharp transition in the zero-shear viscosity data demonstrating that grafting density strongly impacts the entanglement molar mass. The entanglement modulus (Ge) scales with inverse grafting density (ng) as Ge ~ ng1.2 and Ge ~ ng0 in accordance with scaling theory in the high and low grafting density limits, respectively. However, a sharp transition between these limiting behaviors occurs, which does not conform to existing theoretical models for graft polymers. A molecular interpretation based on thin flexible chains at low grafting density and thick semiflexible chains at high grafting density anticipates the sharp transition between the limiting dynamical regimes.

Description

The folder below include the NMR, SEC, DSC, SAXS, and rheology data for all reported samples. The zipped folder contains each series of data in a subfolder, and the readme file further describes the individual files.

Referenced by

Ingrid N. Haugan, Michael J. Maher, Alice B. Chang, Tzu-Pin Lin, Robert H. Grubbs, Marc A. Hillmyer, and Frank S. Bates. Consequences of Grafting Density on the Linear Viscoelastic Behavior of Graft Polymers. ACS Macro Lett., 2018, 7, 525-530.
https://dx.doi.org/10.1021/acsmacrolett.8b00116

Related to

Replaces

License

CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/

Publisher

Collections

Data Repository for U of M (DRUM)
CSP Research Data

Funding information

NSF CHE-1413862

item.page.sponsorshipfunderid

item.page.sponsorshipfundingagency

item.page.sponsorshipgrant

Previously Published Citation

Suggested citation

Haugan, Ingrid N; Maher, Michael J; Chang, Alice B; Lin, Tzu-Pin; Grubbs, Robert H; Hillmyer, Marc A; Bates, Frank S. (2018). Supporting data for Consequences of Grafting Density on the Linear Viscoelastic Behavior of Graft Polymers. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/D6T97M.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.