Activity
-
Reunited with my friends and colleagues from over 27 years ago at the 2024 Texas A&M Hands-on Electron Beam Workshop! #ebeam #TAMU
Reunited with my friends and colleagues from over 27 years ago at the 2024 Texas A&M Hands-on Electron Beam Workshop! #ebeam #TAMU
Liked by Ken Aston
-
For the first time at a society event, Intuitive President Dave Rosa and Dr. Laila Rashidi, medical director for colon and rectal surgery at…
For the first time at a society event, Intuitive President Dave Rosa and Dr. Laila Rashidi, medical director for colon and rectal surgery at…
Liked by Ken Aston
-
Another hot inflation print rattled the markets this week, with traders slashing their rate cut bets. But, this isn't 2022. In the latest…
Another hot inflation print rattled the markets this week, with traders slashing their rate cut bets. But, this isn't 2022. In the latest…
Liked by Ken Aston
Experience
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Education
Publications
-
Effects of Terminal Sterilization on PEG-Based Bioresorbable Polymers Used in Biomedical Applications
Macromolecular Materials and Engineering
The effects of ethylene oxide (EO), vaporized hydrogen peroxide (VHP), gamma (γ) radiation, and electron-beam (E-beam) on the physiochemical and morphological properties of medical device polymers are investigated. Polymers with ether, carbonate, carboxylic acid, amide and ester functionalities are selected from a family of poly(ethylene glycol) (PEG) containing tyrosine-derived polycarbonates (TyrPCs) to include slow, medium, fast, and ultra-fast degrading polymers. Poly(lactic acid) (PLA) is…
The effects of ethylene oxide (EO), vaporized hydrogen peroxide (VHP), gamma (γ) radiation, and electron-beam (E-beam) on the physiochemical and morphological properties of medical device polymers are investigated. Polymers with ether, carbonate, carboxylic acid, amide and ester functionalities are selected from a family of poly(ethylene glycol) (PEG) containing tyrosine-derived polycarbonates (TyrPCs) to include slow, medium, fast, and ultra-fast degrading polymers. Poly(lactic acid) (PLA) is used for comparison. Molecular weight (Mw) of all tested polymers decreases upon gamma and E-beam, and this effect becomes more pronounced at higher PEG content. Gamma sterilization increases the glass transition temperature of polymers with high PEG content. EO esterifies the carboxylic acid groups in desaminotyrosol-tyrosine (DT) and causes significant degradation. VHP causes hydroxylation of the phenyl ring, and hydrolytic degradation. This study signifies the importance of the chemical composition when selecting a sterilization method, and provides suggested conditions for each of the sterilization methods.
Other authors -
More activity by Ken
-
We’re at the 39th Annual Meeting of the European Association of Urology with the Young Academic Urologists—connecting the last generation of pioneers…
We’re at the 39th Annual Meeting of the European Association of Urology with the Young Academic Urologists—connecting the last generation of pioneers…
Liked by Ken Aston
-
I'm feeling very old, but mostly grateful, as today marks 11 years (!!!) with Publicis Groupe. Starting out in 2013 as an associate on our small…
I'm feeling very old, but mostly grateful, as today marks 11 years (!!!) with Publicis Groupe. Starting out in 2013 as an associate on our small…
Liked by Ken Aston
-
Day 2 of the ISE (Industry Scientific Exchange) for new sterilization modalities is close to wrapping up for the day. The day featured breakout…
Day 2 of the ISE (Industry Scientific Exchange) for new sterilization modalities is close to wrapping up for the day. The day featured breakout…
Liked by Ken Aston
-
Today, we’re proud to announce the U.S. Food and Drug Administration (FDA) provided 510(k) clearance for da Vinci 5, our next-generation multiport…
Today, we’re proud to announce the U.S. Food and Drug Administration (FDA) provided 510(k) clearance for da Vinci 5, our next-generation multiport…
Liked by Ken Aston
-
Just finished the course “Presenting Data Effectively to Inform and Inspire” by Bill Shander! Check it out: https://lnkd.in/ec92DYF6…
Just finished the course “Presenting Data Effectively to Inform and Inspire” by Bill Shander! Check it out: https://lnkd.in/ec92DYF6…
Liked by Ken Aston
-
As many of you know ISO 11135 is going through revision. There is a lot of discussion around methods to drive lower EO as part of this many of the…
As many of you know ISO 11135 is going through revision. There is a lot of discussion around methods to drive lower EO as part of this many of the…
Liked by Ken Aston
-
𝗧𝗵𝗲 𝗗𝗮𝘄𝗻 𝗼𝗳 𝗥𝗼𝗯𝗼𝘁𝗶𝗰 𝗦𝘂𝗿𝗴𝗲𝗿𝘆: 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺𝗶𝗻𝗴 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗶𝗻 𝗥𝗲𝗺𝗼𝘁𝗲 𝗔𝗿𝗲𝗮𝘀 🏥🤖 Robotic surgery…
𝗧𝗵𝗲 𝗗𝗮𝘄𝗻 𝗼𝗳 𝗥𝗼𝗯𝗼𝘁𝗶𝗰 𝗦𝘂𝗿𝗴𝗲𝗿𝘆: 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺𝗶𝗻𝗴 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗶𝗻 𝗥𝗲𝗺𝗼𝘁𝗲 𝗔𝗿𝗲𝗮𝘀 🏥🤖 Robotic surgery…
Liked by Ken Aston
-
We’re at BIOMEDevice Silicon Valley with Nelson Labs & Regulatory Compliance Associates (RCA) and we’re eager to talk about our sterilization, lab…
We’re at BIOMEDevice Silicon Valley with Nelson Labs & Regulatory Compliance Associates (RCA) and we’re eager to talk about our sterilization, lab…
Liked by Ken Aston
-
I am honored to announce that our company, TauMat, has been awarded a U.S. National Science Foundation (NSF) Small Business Innovation Research…
I am honored to announce that our company, TauMat, has been awarded a U.S. National Science Foundation (NSF) Small Business Innovation Research…
Liked by Ken Aston
-
Tonight we've got 1680 empty chairs. Tomorrow they will be filled with surgeon leaders, hospital executives, and robotic thought leaders advancing…
Tonight we've got 1680 empty chairs. Tomorrow they will be filled with surgeon leaders, hospital executives, and robotic thought leaders advancing…
Liked by Ken Aston
-
At last night's dinner meeting of the ASTM Board of Directors, outgoing Chair John Logar was celebrated for his service. Seen in photos are ASTM…
At last night's dinner meeting of the ASTM Board of Directors, outgoing Chair John Logar was celebrated for his service. Seen in photos are ASTM…
Liked by Ken Aston
-
KiiPster makes us proud! Founding member of KiiP is honored by ASTM during the opening ceremony. John Logar has a long history of serving the…
KiiPster makes us proud! Founding member of KiiP is honored by ASTM during the opening ceremony. John Logar has a long history of serving the…
Liked by Ken Aston
-
Giving thought to sterilization ⏰ early in the development of your new medical device is always a good idea. Contact NextBeam to get a free…
Giving thought to sterilization ⏰ early in the development of your new medical device is always a good idea. Contact NextBeam to get a free…
Liked by Ken Aston
People also viewed
Explore collaborative articles
We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
Explore MoreOthers named Ken Aston in United States
-
Ken Aston
--
-
Ken Aston
Owner at Self Employed
-
Ken Aston
Independent Financial Services Professional
-
Kenneth Aston
Associate Professor at University of Utah School of Medicine
12 others named Ken Aston in United States are on LinkedIn
See others named Ken Aston