Navigation Links
Microcapsules like it hot and salty

in Potsdam have now found out that the density and the thickness of the capsule wall, and hence its permeability, can be controlled with changes to the temperature and salt content.

If the temperature is only slightly raised the hollow spheres swell up or shrink and at the same time the wall becomes thinner or thicker. This depends on the composition and the electrical charge of the polymer shell:

  • If it shrinks, it is possible to encapsulate very small molecules. With the powerful supply of energy from raising the temperature, the bonds between the polymer molecules with opposite charges are loosened and as a result, the capsule wall becomes softer. The material of the shell can therefore flow closer together; the wall becomes thicker and denser. The molecules can no longer move through it and are enclosed inside.
  • If the hollow spheres shrink, the polymer walls also soften when heated. However, there are so many equivalent charges in the capsule wall that they repel each other. The whole structure expands considerably, the diameter increases and the wall becomes thinner. The result is significantly higher permeability compared to the original capsules at room temperature.
  • If salt is now added to the capsule solution, the electrical charges are neutralized and the capsules shrink again, the wall thickening as described in the first example above. "By combining simple materials available in any kitchen, we can vary the properties of the wall of the microtransport system in any way we wish," said Karen Kohler, a scientist working on this project at the Max Planck Institute of Colloids and Interfaces in Potsdam. The scope for change in capsules with an original diameter of 4.5 micrometers varies from 1.5 to 20 micrometres (see fig.).

However, it is not just in the laboratory that the size of the capsule can be adjusted precisely. The scientists also have a theoretical understanding of the processes in the caps
'"/>

Source:Max-Planck-Gesellschaft


Page: 1 2 3

Related biology news :

1. Current human embryonic stem cell lines contaminated UCSD/Salk team finds
2. Study finds more than one-third of human genome regulated by RNA
3. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
4. Same mutation aided evolution in many fish species, Stanford study finds
5. NC State scientist finds soft tissue in T. rex bones
6. Genrate: a generative model that finds and scores new genes and exons in genomic microarray data
7. Genetically modified rice in China benefits farmers health, study finds
8. Survey finds silver contamination in North Pacific waters
9. Anti cancer virotherapy well tolerated in first human administration, research finds
10. NASA study finds snow melt causes large ocean plant blooms
11. Oceans more vulnerable to agricultural runoff than previously thought, study finds
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Microcapsules like hot and salty

(Date:4/23/2014)... pair of bioethics experts have added "playwright" to their ... in grappling with an onslaught of ethical issues as ... the human genome was first sequenced. , Until ... W. Bush have been performed for, and by, their ... conferences, meetings and in classrooms. With Oxford University ...
(Date:4/23/2014)... Wash. -- Like a hungry diner ripping open a ... into electricity must tear open a hydrogen molecule. Now ... holding onto the two halves of its hydrogen feast. ... how to make the catalyst work better for alternative ... scientists have shown precisely where the hydrogen halves end ...
(Date:4/23/2014)... evidence that the source of a unique rhythmic sound, ... the "bio-duck," is the Antarctic minke whale ( Balaenoptera ... in the 1960s who thought it sounded like a ... locations in the Southern Ocean, but its source has ... an international team of researchers deployed acoustic tags on ...
Breaking Biology News(10 mins):Bioethicists use theatrical narratives to bridge the gap between society and science 2Bioethicists use theatrical narratives to bridge the gap between society and science 3Halving hydrogen 2Halving hydrogen 3Halving hydrogen 4Scientists identify source of mysterious sound in the Southern Ocean 2Scientists identify source of mysterious sound in the Southern Ocean 3
... A new international consortium aimed at linking together the world,s ... saw the Nobel Prize for Medicine awarded to Mario R. ... this week. The Cambridge University scientist leading ... advances and potentially reduce the number of animals used in ...
... AIDS patients worldwide who are resistant or are developing ... University of Georgia researcher may offer a new treatment ... complex retrovirus responsible for the devastating disease. ... disease known as HIV-AIDS. Although the number of drug-resistant ...
... support of the Breast Cancer Research Foundation (BCRF), ... pleased to announce the inaugural recipients of the ... These grants provide direct support for innovative ... discovery, development, and application of new ways to ...
Cached Biology News:A computer for your mouse! 2New class of drug offers hope to treatment-resistant AIDS patients 2New class of drug offers hope to treatment-resistant AIDS patients 3AACR, BCRF award inaugural grants in translational breast cancer research 2AACR, BCRF award inaugural grants in translational breast cancer research 3
(Date:1/14/2014)... Histogen, Inc., a regenerative medicine company ... under simulated embryonic conditions, today announced that they have ... Inc. for physician-dispensed aesthetic products containing Histogen’s proprietary multipotent ... is an amendment to the existing license between Histogen ...
(Date:1/14/2014)... 14, 2014 The largest international professional organization ... and therapeutic derivatives thereof has endorsed an educational ... about the challenges of adulterated herb and botanical ... The Society for Medicinal Plant and ...
(Date:1/14/2014)... Jan. 14, 2014  RXi Pharmaceuticals Corporation (OTCQX: RXII), ... commercializing innovative therapies addressing major unmet medical needs ... the Notice of Allowance from the United States ... RNAi compounds (sd-rxRNA®), for the treatment of fibrosis. ...
(Date:1/14/2014)... Kerr Corporation, a leading manufacturer of innovative dental products, has ... arch impressions on its dental blog. , Titled ... serves up a list of tips to help dentists best ... David Little as he crafts a porcelain crown using Kerr’s ...
Breaking Biology Technology:Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3
... venture agreement signed with Hunan, Biopharmaceutical to build ... - Biologics: 23% growth in sales and to soon become ... thrombolytic, agent for pulmonary embolism, ... agreement, - Dr. Mark Cochran added ...
... , - Healthcare Information System Goes Live ... In record time of two months, Pragmedic Solutions - a Dubai ... (HIS) for Emaar Healthcare Group, the,healthcare subsidiary of Emaar Properties, it ... doctors exhaust 40 to 60 per cent of their working,hours engaged ...
... , SOLANA BEACH, Calif. & HAMILTON, New Zealand, Oct. ... enzyme-based products for DNA extraction and other life sciences ... agreement with VERITAS Japan to distribute ZyGEM,s DNA extraction ... is the latest in a series of recent major ...
Cached Biology Technology:Microbix Biosystems Provides a Corporate Update 2Microbix Biosystems Provides a Corporate Update 3Microbix Biosystems Provides a Corporate Update 4Microbix Biosystems Provides a Corporate Update 5Microbix Biosystems Provides a Corporate Update 6Microbix Biosystems Provides a Corporate Update 7Pragmedic Implements World-Class Healthcare Solution for Emaar Healthcare 2ZyGEM Strengthens its Worldwide Presence With New Distribution Agreement for Japan 2ZyGEM Strengthens its Worldwide Presence With New Distribution Agreement for Japan 3ZyGEM Strengthens its Worldwide Presence With New Distribution Agreement for Japan 4
Anti-Ephrin B1 Host: rabbit polyclonal Species Reactivity: human Applications: WB Storage: 4C...
Human Regulatory T cell Staining Kit #2 (w/ APC Foxp3 PCH101, FITC CD4, PE CD25)...
...
Request Info...
Biology Products: