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Full-Text Articles in Engineering
Retaining Thermoresponsive Poly(Vinyl Methyl Ether) To Cellulose Via (3-Aminopropyl)Triethoxylsilane Network, Grace Tolhurst
Retaining Thermoresponsive Poly(Vinyl Methyl Ether) To Cellulose Via (3-Aminopropyl)Triethoxylsilane Network, Grace Tolhurst
Williams Honors College, Honors Research Projects
Stimuli-responsive supports and devices that are fabricated from inexpensive materials are attractive candidates for a variety of applications, such as environmental protection, and regenerative medicine. Poly(vinyl methyl ether) (PVME), a thermoresponsive polymer (TRP), has recently been used as thermoresponsive cell culture supports for cell growth/proliferation followed with cell/cell sheet harvesting by simply switching temperature. Cellulose is an attractive candidate to replace glass/silicone supports as it is inexpensive and environmentally friendly. This project focuses on retaining PVME to the cellulose membrane via 3-aminopropyltriethoxysilane (APTES) network to generate TR membranes and flexible liners that can be incorporated into bioreactors for producing cells …
Comparison Of The Effects Of Hofmeister Ions On Transition Temperature Of Two Thermoresponsive Polymers, Ashley Knight
Comparison Of The Effects Of Hofmeister Ions On Transition Temperature Of Two Thermoresponsive Polymers, Ashley Knight
Williams Honors College, Honors Research Projects
It has been hypothesized that poly(vinylmethylether) (PVME) could be used to replace poly(N-isopropylacrylamide) (pNIPAAM) in various thermoresponsive applications based on literature searches and previous lab experiments. PVME is cheaper and easier to process, and would make pNIPAAM applications more cost effective. In order to verify this, experimental data was gathered on the effects of four anions from the Hofmeister series (SO42-, Cl-, I-, and SCN-) on the lower critical solution temperature (LCST) of pNIPAAM and compared to previous data collected on PVME. Commercial pNIPAAM from Sigma Aldrich and Polysciences were used. The reported LCST range for pNIPAAM is …