Lab Protocol - Dialysis Tubing Experiments (Unit 7 Diffusion)

Lab Protocol - Dialysis Tubing Experiments (Unit 7 Diffusion)

In this tutorial I discuss how we use dialysis tubing in experiments 6.2 and 6.3. For more information regarding the actual outcomes of these experiments, please refer to the reviews regarding these experiments.

Polymers in cosmetic and personal health products

Polymers in cosmetic and personal health products

As part of a Macromolecules project ran by the University of York, I have researched two polymers found in everyday products and produced this video. It is targeted at A Level students with detailed explanations. I hope you find the video helpful and informative and next time you use one of the mentioned products, check the label and see if you can find either of these polymers! **OTHERS BRANDS ARE AVAILABLE** References: http://pslc.ws/mactest/maindir.htm http://www.britannica.com/science/initiator-polymerization https://en.wikipedia.org/wiki/Polypropylene_glycol http://www.lookchem.com/Polypropylene-Glycol-Butyl-Ether/ http://www.cosmeticsinfo.org/ingredient/ppg-14-butyl-ether The Dow Chemical Company. Product Safety Assessment DOWANOLTM PnB Glycol Ether [Propylene Glycol n-Butyl Ether]. 2015: http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_094c/0901b8038094c561.pdf?filepath=productsafety/pdfs/noreg/233-00409.pdf&fromPage=GetDoc http://www.sigmaaldrich.com/catalog/product/aldrich/438111?lang=en&region=GB Rexin O, Mülhaupt R. Anionic ring-opening polymerization of propylene oxide in the presence of phosphonium catalysts. Journal of Polymer Science Part A: Polymer Chemistry 2002; 40(7) Chinn, Henry, “Glycol Ethers,” Marketing Research Report: Chemical Economics Handbook, SRI Consulting Lanigan RS; Cosmetic Ingredient Review Expert Panel. Amended final report on the safety assessment of PPG-40 butyl ether with an addendum to include PPG-2, -4, -5, -9, -12, -14, -15, -16, -17, -18, -20, -22, -24, -26, -30, -33, -52, and -53 butyl ethers. Int J Toxicol 2001;20 Suppl 4:39-52. https://en.wikipedia.org/wiki/Polyethylene_glycol https://en.wikipedia.org/wiki/Polydimethylsiloxane http://www.britannica.com/topic/industrial-polymers-468698/Unsaturated-polyesters#ref608767 https://www.truthinaging.com/ingredients/peg-12-dimethicone http://www.ewg.org/skindeep/ingredient/704504/PEG-12_DIMETHICONE/# http://www.cosmeticsinfo.org/ingredient/peg-12-dimethicone http://www.thefreedictionary.com/Crosslinked+polymer http://www.clearcoproducts.com/pdf/cosmetic/NP-PEG-12-Dimethicone.pdf Gottschalck TE and Breslawec HP. International Cosmetic Ingredient Dictionary and Handbook, 14 ed. Washington, DC: Personal Care Products Council; 2012. Dow Corning Corporation. XIAMETER® OFX-0193 Fluid. 2013: https://www.google.co.uk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0ahUKEwjV99-rnfDLAhVGwBQKHWsyCFAQjB0IBA&url=https%3A%2F%2Fwww.xiameter.com%2FEN%2FPages%2FRetrieveDocument.aspx%3Ftype%3DLit%26DocumentId%3D090276fe8019052a%26s%3D169547&psig=AFQjCNG3MVz-wu6EZoi8gqoLTqY2aNUhDQ&ust=1459695957377124&cad=rjt Wegner, J. and Littau, C. (2010). Foaming alcohol compositions with selected dimethicone surfactants. US 7842725 B2. http://www.cosmeticsinfo.org/glossary/letter_h#Hair_Conditioning_Agent http://www.cosmeticsinfo.org/glossary/letter_s#Surfactant_-_Emulsifying_Agent http://www.essentialchemicalindustry.org/polymers/silicones.html Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG Jr, Shank RC, Slaga TJ, Snyder PW, Andersen FA. Safety Assessment of Dimethicone Crosspolymers as Used in Cosmetics. Int J Toxicol. 2014 May 26;33(2 suppl):65S-115S. IMAGE CREDITS: http://i.dailymail.co.uk/i/pix/2013/0... https://www.acceleratedstudynotes.com... http://assets.inhabitat.com/wp-conten... https://upload.wikimedia.org/wikipedi... http://www.konincorp.com/en/prod_deta... https://www.etreavis.com/acatalog/Men... https://groceries.morrisons.com/produ... http://fashion-and-beauty.org/images/... http://groceries.iceland.co.uk/medias...

Microreactor On Hands Training #3

Microreactor On Hands Training #3

Sigma-Aldrich Japan K.K. Microreactor On Hands Training June, 2010 #3

It Might as Well Be Spring Carmen Cavallaro

It Might as Well Be Spring  Carmen Cavallaro

Microreactor On Hands Training #6

Microreactor On Hands Training #6

Sigma-Aldrich Japan K.K. Microreactor On Hands Training June, 2010 #6

Microinjection

Microinjection

RDT DNA INSERTION TECNIQUE MICROINJECTION

Microreactor On Hands Training #4

Microreactor On Hands Training #4

Sigma-Aldrich Japan K.K. Microreactor On Hands Training June, 2010 #4

A Perfect Union: Our Passion & Your Custom Synthesis Needs

A Perfect Union: Our Passion & Your Custom Synthesis Needs

We make it our mission to match your FORMULATION NEEDS with our EXPERTISE. Here’s a glimpse of our facilities fueled by nearly 200 years of PASSION for CHEMISTRY, INGENUITY, and TEAMWORK. Expect the highest quality of drug delivery compounds and enhanced bioavailability of your API. Need a TRUSTED PARTNER to develop your APIs, Lipids, and functionalized PEGS? Our R&D, production and quality control teams are eager to get started. From laboratory to commercial manufacturing scale. We’re here for you. Every step of the drug production journey. TAKE ADVANTAGE OF OUR PASSION FOR CHEMISTRY. Get Connected! Join EMD Millipore on your favorite social media outlet for the latest updates, news, products, innovations, and contests! Visit us at: http://www.emdmillipore.com/API Join us on LinkedIn: https://www.linkedin.com/company/emd-millipore Join the community on twitter: https://twitter.com/milliporesigma Do not forget to subscribe to have better access to our videos!

Micro Injection Procedure

Micro Injection Procedure

Injection procedure for zebra fish. Cancer research at BYU-Idaho.

Drop Storage without stabilizing surfactant

Drop Storage without stabilizing surfactant

Storage without a stabilizing surfactant. This storage method uses wells adjacent to, but connected to the flow channel. The drops flow by the wells when moving at high flow rates if the well is shallow in depth, comparable with the height of the flow channel. When the flow stops the drops spontaneously dock into the nearest well in a game of microfluidic musical chairs. In this method the first drop docks into the last well and the last drop docks into the first well. Without surfactant to stabilize the drop some mixing of drops occurs and typically the contents of about three or four adjacent drops are shared. In this movie a fluorinated oil (FC-43, 3M) mixed with a surfactant (12%w/w, Tridecafluoro octanol, Sigma-Aldrich) was used. The surfactant lowers surface tension making it easy to create drops and simultaneously slows coalescence of drops. Extraction of the drops from the wells is possible when the flow direction is reversed, making recovery of the droplets possible. The movie is recorded in real time. http://www.brandeis.edu/departments/physics/complexfluids/fraden/papers/JACSPhaseBehaviorSI2007.pdf http://www.brandeis.edu/departments/physics/complexfluids/fraden/papers/JACSPhaseBehavior2007.pdf

Top Videa -  loading... Změnit krajinu
Načíst dalších 10 videí
 
 
Sorry, You can't play this video
00:00/00:00
  •  
  •  
  •  
  •  
  •  
  •  
  •  
CLOSE
CLOSE
CLOSE