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:8/24/2015)... CAPE TOWN, South Africa , August 24, 2015 /PRNewswire/ ... awarded Germany ,s largest biometrics manufacturer DERMALOG ... with the "2015 African Biometrics Company of the ... installation in Nigeria .   ... ) and http://www.presseportal.de/nr/8896 - On Thursday ...
(Date:8/20/2015)... 20, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... focused on the growing mobile commerce market and creator ... The Smart Card Alliance and the EMV Migration Forum.  ... the Smart Card Alliance Latin America (SCALA) Chapter provides ... and thought leaders promoting adoption of smart card technology. ...
(Date:8/17/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... mobile commerce market and creator of the Wocket® smart ... The new marketing campaign is being spearheaded by an ... ( http://amplitudemarketing.com/ ) and TPMG ( http://tmpg.com/ ). ... driven marketing and brand awareness and has a client ...
Breaking Biology News(10 mins):Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 2Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 3NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 2NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 3NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 4NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 2NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 3
... PORTLAND, Ore. February 21, 2012. Log and lumber exports from ... 2011 compared to 2010, totaling 1,992 and 1,015 million board ... Station. Oregon and Washington are again the largest log exporter ... exported logs from west coast in 2011 increased by 54 ...
... is receptive to donating blood or other genetic material for ... University, Dallas. In what appears to be the first ... genetic biobank, the study surveyed 250 male and female undergraduate ... said they were willing to donate to a biobank, said ...
... PA, February 21, 2012 Using a noninvasive test on ... new algorithm for analysis, scientists can detect, with a high ... chromosomal abnormalities that cause Down syndrome and a genetic disorder ... scalable than other recently developed genetic screening tests and has ...
Cached Biology News:West coast log, lumber exports increased over forty percent in 2011 2Study finds college students willing to donate genetic material to biobanks for research 2Noninvasive method accurately and efficiently detects risk of Down syndrome 2Noninvasive method accurately and efficiently detects risk of Down syndrome 3
(Date:8/28/2015)... 28, 2015 /PRNewswire/ - RepliCel Life Sciences Inc. ... company focused on the development of autologous cell ... ended June 30, 2015, corporate highlights, and near-term ... are available at www.sedar.com ,  www.edgar.com ... "RepliCel expects to launch its RCS-01 treatment ...
(Date:8/28/2015)... ... ... initial launch of FireflySci Inc. (FFS) in early 2015, the company continues to shake up ... the Fonz in a lab coat and Large Marge have been posted on the company’s ... , FireflySci is proud to be the only cuvette manufacturer is the world that has ...
(Date:8/27/2015)... ... August 27, 2015 , ... Capital Edge Consulting ... business problems, is pleased to announce their ranking as one of the top 5000 ... the fastest-growing private companies across the nation. , “It is truly an honor to ...
(Date:8/27/2015)... 27, 2015 /PRNewswire/ - Portage Biotech Inc. ("Portage") ... Biohaven Pharmaceutical Holding Company Limited (Biohaven), announced today ... study of BHV-0223, a glutamate modulating agent. Biohaven ... and recently obtained clearance from the U.S. Food ... testing. Portage holds 54% equity interest in Biohaven, ...
Breaking Biology Technology:RepliCel Reports Second Quarter 2015 Financial Results 2RepliCel Reports Second Quarter 2015 Financial Results 3RepliCel Reports Second Quarter 2015 Financial Results 4RepliCel Reports Second Quarter 2015 Financial Results 5Cuvette Manufacturer FireflySci Launches Back to School Deals with Complimentary Shipping On All Orders 2Capital Edge Consulting Makes Inc. 5000 List of America’s Fastest-Growing Private Companies 2Capital Edge Consulting Makes Inc. 5000 List of America’s Fastest-Growing Private Companies 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 2Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 4
... Oct. 24 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc.,("Oncolytics") ... covering interim results from a U.K. Phase ... advanced or,metastatic cancers is scheduled to be ... Molecular Targets and Cancer Therapeutics in,San Francisco. ...
... 23 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc.,("Oncolytics") (TSX:ONC, ... letter of approval from the U.K. Medicines ... Clinical Trial Application (CTA) to begin,a clinical ... with cyclophosphamide, a chemotherapeutic agent as well ...
... Forecast Raised $.05 to $2.25 to $2.35., ST. LOUIS, Oct. 23 ... are to comparable periods in 2006):, -- Strongest Quarterly ... improved on prior quarters, performance, with reported quarterly ... matched the record high sales achieved in ...
Cached Biology Technology:Oncolytics Biotech Inc. Collaborators to Present Positive Interim Results of U.K. Phase Ia/Ib Combination REOLYSIN(R) and Radiation Clinical Trial 2Oncolytics Biotech Inc. Collaborators to Present Positive Interim Results of U.K. Phase Ia/Ib Combination REOLYSIN(R) and Radiation Clinical Trial 3Oncolytics Biotech Inc. Announces Approval for U.K. Clinical Trial Investigating REOLYSIN(R) in Combination with Cyclophosphamide 2Oncolytics Biotech Inc. Announces Approval for U.K. Clinical Trial Investigating REOLYSIN(R) in Combination with Cyclophosphamide 3Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 2Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 3Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 4Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 5Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 6Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 7Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 8Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 9Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 10Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 11Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 12Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 13Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 14Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 15Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 16Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 17Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 18Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 19Sigma-Aldrich (Nasdaq: SIAL) Q3 2007 Sales Increase 14.0%, Yielding Diluted EPS of $.54. 20
... to PAX3 This protein is a ... of transcription factors. Members of the PAX ... and a paired-type homeodomain. These proteins play ... paired box gene 3 are associated with ...
Compact, portable device, seals 96 and 384 well plates with preset temperature optimised for Eppendorf heat sealing foils and films. Suitable for plates of different heights. AC input: 50/60 Hz230 V...
... BMP2 BMP2 belongs to the ... Bone morphogenic protein induces bone formation. ... the autosomal dominant disease of fibrodysplasia ... Synthetic peptide: PSDEVLSEFELRLLSM conjugated to ...
... thin foil heat sealing material is ... from a screw down heated lid), ... a useful method for sample retrieval. ... the existing seal. Ideal for compound ...
Biology Products: