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Morphology and surface properties of high strength siloxane poly(urethane‐urea)s developed for heart valve application

Overview of attention for article published in Journal of Biomedical Materials Research, Part B: Applied Biomaterials, March 2018
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Title
Morphology and surface properties of high strength siloxane poly(urethane‐urea)s developed for heart valve application
Published in
Journal of Biomedical Materials Research, Part B: Applied Biomaterials, March 2018
DOI 10.1002/jbm.b.34101
Pubmed ID
Authors

Loshini S. Dandeniyage, Raju Adhikari, Mark Bown, Robert Shanks, Benu Adhikari, Christopher D. Easton, Thomas R. Gengenbach, David Cookson, Pathiraja A. Gunatillake

Abstract

A series of siloxane poly(urethane-urea) (SiPUU) were developed by incorporating a macrodiol linked with a diisocyanate to enhance mixing of hard and soft segments (SS). The effect of this modification on morphology, surface properties, surface elemental composition, and creep resistance was investigated. The linked macrodiol was prepared by reacting α,ω-bis(6-hydroxyethoxypropyl) poly(dimethylsiloxane)(PDMS) or poly(hexamethylene oxide) (PHMO) with either 4,4'-methylenediphenyl diisocyanate (MDI), hexamethylene diisocyanate (HDI), or isophorone diisocyanate (IPDI). SiPUU with PHMO-MDI-PHMO and PHMO-IPDI-PHMO linked macrodiols showed enhanced creep resistance and recovery when compared with a commercial biostable polyurethane, Elast-Eon™ 2A. Small and wide-angle X-ray scattering data were consistent with significant increase of hydrogen bonding between hard and SS with linked-macrodiols, which improved SiPUU's tensile stress and tear strengths. These SiPUU were hydrophobic with contact angle higher than 101° and they had low water uptake (0.7%·w/w of dry mass). They also had much higher siloxane concentration on the surface compared to that in the bulk. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2018.

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X Demographics

The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 34 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 5 15%
Professor 5 15%
Researcher 4 12%
Other 3 9%
Student > Ph. D. Student 3 9%
Other 3 9%
Unknown 11 32%
Readers by discipline Count As %
Engineering 8 24%
Chemistry 5 15%
Medicine and Dentistry 3 9%
Materials Science 2 6%
Unspecified 1 3%
Other 1 3%
Unknown 14 41%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 04 April 2018.
All research outputs
#15,070,619
of 25,382,440 outputs
Outputs from Journal of Biomedical Materials Research, Part B: Applied Biomaterials
#881
of 1,374 outputs
Outputs of similar age
#182,933
of 347,103 outputs
Outputs of similar age from Journal of Biomedical Materials Research, Part B: Applied Biomaterials
#6
of 24 outputs
Altmetric has tracked 25,382,440 research outputs across all sources so far. This one is in the 40th percentile – i.e., 40% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,374 research outputs from this source. They receive a mean Attention Score of 3.9. This one is in the 35th percentile – i.e., 35% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 347,103 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 47th percentile – i.e., 47% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 24 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 75% of its contemporaries.